./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/up.i --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ca4ee3dd Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-invgen/up.i -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ff5c10c83c8d29dcc2c2798035fa2754df224d2313ad9c91b6ee5bb6ca3d9a9f --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-ca4ee3d-m [2024-09-20 18:46:18,325 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 18:46:18,387 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 18:46:18,391 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 18:46:18,392 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 18:46:18,411 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 18:46:18,412 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 18:46:18,412 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 18:46:18,413 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 18:46:18,413 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 18:46:18,413 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 18:46:18,413 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 18:46:18,414 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 18:46:18,414 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 18:46:18,414 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 18:46:18,415 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 18:46:18,415 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 18:46:18,415 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 18:46:18,415 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 18:46:18,416 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 18:46:18,416 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 18:46:18,416 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 18:46:18,417 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 18:46:18,417 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 18:46:18,417 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 18:46:18,418 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 18:46:18,418 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 18:46:18,418 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 18:46:18,418 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 18:46:18,419 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 18:46:18,419 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 18:46:18,419 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 18:46:18,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 18:46:18,420 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 18:46:18,420 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 18:46:18,420 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 18:46:18,421 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 18:46:18,421 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 18:46:18,421 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 18:46:18,421 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 18:46:18,421 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 18:46:18,422 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 18:46:18,422 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff5c10c83c8d29dcc2c2798035fa2754df224d2313ad9c91b6ee5bb6ca3d9a9f Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-20 18:46:18,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 18:46:18,644 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 18:46:18,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 18:46:18,647 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 18:46:18,648 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 18:46:18,649 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-invgen/up.i [2024-09-20 18:46:19,898 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 18:46:20,053 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 18:46:20,054 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/up.i [2024-09-20 18:46:20,062 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/90bcf8105/be9b6847575543b9847e83db33b29bdb/FLAG32c942209 [2024-09-20 18:46:20,074 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/90bcf8105/be9b6847575543b9847e83db33b29bdb [2024-09-20 18:46:20,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 18:46:20,080 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-20 18:46:20,081 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 18:46:20,081 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 18:46:20,087 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 18:46:20,087 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 06:46:20" (1/1) ... [2024-09-20 18:46:20,088 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1110e28f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:46:20, skipping insertion in model container [2024-09-20 18:46:20,088 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 06:46:20" (1/1) ... [2024-09-20 18:46:20,104 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 18:46:20,231 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/up.i[893,906] [2024-09-20 18:46:20,239 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 18:46:20,245 INFO L200 MainTranslator]: Completed pre-run [2024-09-20 18:46:20,256 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/up.i[893,906] [2024-09-20 18:46:20,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 18:46:20,272 INFO L204 MainTranslator]: Completed translation [2024-09-20 18:46:20,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:46:20 WrapperNode [2024-09-20 18:46:20,273 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 18:46:20,274 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 18:46:20,275 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 18:46:20,275 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 18:46:20,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:46:20" (1/1) ... [2024-09-20 18:46:20,285 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:46:20" (1/1) ... [2024-09-20 18:46:20,291 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-20 18:46:20,291 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 18:46:20,292 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 18:46:20,292 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 18:46:20,292 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 18:46:20,299 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:46:20" (1/1) ... [2024-09-20 18:46:20,299 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:46:20" (1/1) ... [2024-09-20 18:46:20,301 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:46:20" (1/1) ... [2024-09-20 18:46:20,314 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]. [2024-09-20 18:46:20,316 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:46:20" (1/1) ... [2024-09-20 18:46:20,316 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:46:20" (1/1) ... [2024-09-20 18:46:20,318 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:46:20" (1/1) ... [2024-09-20 18:46:20,321 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:46:20" (1/1) ... [2024-09-20 18:46:20,321 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:46:20" (1/1) ... [2024-09-20 18:46:20,322 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:46:20" (1/1) ... [2024-09-20 18:46:20,323 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 18:46:20,328 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 18:46:20,328 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 18:46:20,328 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 18:46:20,328 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:46:20" (1/1) ... [2024-09-20 18:46:20,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 18:46:20,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:20,360 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) [2024-09-20 18:46:20,365 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 [2024-09-20 18:46:20,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 18:46:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-20 18:46:20,402 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-20 18:46:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-20 18:46:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-20 18:46:20,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-20 18:46:20,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 18:46:20,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 18:46:20,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-20 18:46:20,403 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-20 18:46:20,504 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 18:46:20,506 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 18:46:20,600 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-09-20 18:46:20,600 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 18:46:20,623 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 18:46:20,624 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-20 18:46:20,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 06:46:20 BoogieIcfgContainer [2024-09-20 18:46:20,625 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 18:46:20,627 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 18:46:20,627 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 18:46:20,630 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 18:46:20,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 06:46:20" (1/3) ... [2024-09-20 18:46:20,631 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d3efde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 06:46:20, skipping insertion in model container [2024-09-20 18:46:20,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:46:20" (2/3) ... [2024-09-20 18:46:20,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d3efde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 06:46:20, skipping insertion in model container [2024-09-20 18:46:20,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 06:46:20" (3/3) ... [2024-09-20 18:46:20,633 INFO L112 eAbstractionObserver]: Analyzing ICFG up.i [2024-09-20 18:46:20,647 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 18:46:20,647 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-20 18:46:20,698 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 18:46:20,705 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;@67b4dfd8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 18:46:20,705 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-20 18:46:20,709 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-20 18:46:20,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-20 18:46:20,714 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:20,715 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:20,715 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:20,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:20,720 INFO L85 PathProgramCache]: Analyzing trace with hash -2044494321, now seen corresponding path program 1 times [2024-09-20 18:46:20,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:20,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642077536] [2024-09-20 18:46:20,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:20,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:20,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:20,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:20,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:20,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 18:46:20,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:20,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642077536] [2024-09-20 18:46:20,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642077536] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 18:46:20,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 18:46:20,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-20 18:46:20,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876616407] [2024-09-20 18:46:20,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 18:46:20,860 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-20 18:46:20,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:20,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-20 18:46:20,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 18:46:20,881 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-20 18:46:20,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:20,902 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2024-09-20 18:46:20,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-20 18:46:20,904 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-09-20 18:46:20,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:20,909 INFO L225 Difference]: With dead ends: 34 [2024-09-20 18:46:20,909 INFO L226 Difference]: Without dead ends: 16 [2024-09-20 18:46:20,912 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 18:46:20,914 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:20,915 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 18:46:20,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-09-20 18:46:20,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-09-20 18:46:20,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 18:46:20,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2024-09-20 18:46:20,946 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2024-09-20 18:46:20,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:20,947 INFO L474 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2024-09-20 18:46:20,947 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-20 18:46:20,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:20,948 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2024-09-20 18:46:20,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-20 18:46:20,949 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:20,949 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:20,949 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-20 18:46:20,949 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:20,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:20,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1299541749, now seen corresponding path program 1 times [2024-09-20 18:46:20,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:20,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274686646] [2024-09-20 18:46:20,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:20,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 18:46:21,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:21,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274686646] [2024-09-20 18:46:21,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274686646] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 18:46:21,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 18:46:21,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 18:46:21,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207557709] [2024-09-20 18:46:21,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 18:46:21,053 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 18:46:21,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:21,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 18:46:21,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-20 18:46:21,058 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-20 18:46:21,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:21,079 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2024-09-20 18:46:21,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 18:46:21,080 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-09-20 18:46:21,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:21,081 INFO L225 Difference]: With dead ends: 28 [2024-09-20 18:46:21,081 INFO L226 Difference]: Without dead ends: 17 [2024-09-20 18:46:21,081 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-20 18:46:21,082 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:21,082 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 18:46:21,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-09-20 18:46:21,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-09-20 18:46:21,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 18:46:21,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2024-09-20 18:46:21,086 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 12 [2024-09-20 18:46:21,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:21,086 INFO L474 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-09-20 18:46:21,086 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-20 18:46:21,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:21,087 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2024-09-20 18:46:21,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-20 18:46:21,087 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:21,087 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:21,087 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-20 18:46:21,087 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:21,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:21,088 INFO L85 PathProgramCache]: Analyzing trace with hash 546941463, now seen corresponding path program 1 times [2024-09-20 18:46:21,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:21,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193975368] [2024-09-20 18:46:21,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:21,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:21,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 18:46:21,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:21,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193975368] [2024-09-20 18:46:21,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193975368] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:21,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126563779] [2024-09-20 18:46:21,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:21,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:21,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:21,188 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) [2024-09-20 18:46:21,190 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-20 18:46:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-20 18:46:21,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:21,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 18:46:21,290 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 18:46:21,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126563779] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 18:46:21,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-20 18:46:21,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2024-09-20 18:46:21,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920818660] [2024-09-20 18:46:21,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 18:46:21,291 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-20 18:46:21,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:21,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-20 18:46:21,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-09-20 18:46:21,292 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-20 18:46:21,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:21,328 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2024-09-20 18:46:21,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-20 18:46:21,328 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-09-20 18:46:21,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:21,330 INFO L225 Difference]: With dead ends: 29 [2024-09-20 18:46:21,330 INFO L226 Difference]: Without dead ends: 27 [2024-09-20 18:46:21,330 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-09-20 18:46:21,331 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:21,331 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 42 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 18:46:21,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-20 18:46:21,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2024-09-20 18:46:21,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-20 18:46:21,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2024-09-20 18:46:21,338 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 13 [2024-09-20 18:46:21,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:21,338 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2024-09-20 18:46:21,338 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-20 18:46:21,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:21,338 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2024-09-20 18:46:21,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-20 18:46:21,339 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:21,339 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:21,352 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-20 18:46:21,539 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:21,540 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:21,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:21,541 INFO L85 PathProgramCache]: Analyzing trace with hash 51481388, now seen corresponding path program 1 times [2024-09-20 18:46:21,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:21,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213184965] [2024-09-20 18:46:21,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:21,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-09-20 18:46:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,684 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 18:46:21,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:21,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213184965] [2024-09-20 18:46:21,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213184965] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:21,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928084651] [2024-09-20 18:46:21,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:21,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:21,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:21,688 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) [2024-09-20 18:46:21,690 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-20 18:46:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-20 18:46:21,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:21,792 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 18:46:21,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:21,844 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 18:46:21,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928084651] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:21,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:21,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-09-20 18:46:21,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628965119] [2024-09-20 18:46:21,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:21,846 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-20 18:46:21,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:21,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-20 18:46:21,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-09-20 18:46:21,847 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-20 18:46:21,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:21,887 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2024-09-20 18:46:21,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-20 18:46:21,888 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 20 [2024-09-20 18:46:21,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:21,890 INFO L225 Difference]: With dead ends: 38 [2024-09-20 18:46:21,890 INFO L226 Difference]: Without dead ends: 24 [2024-09-20 18:46:21,891 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-09-20 18:46:21,892 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:21,893 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 18:46:21,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-20 18:46:21,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-09-20 18:46:21,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-20 18:46:21,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-09-20 18:46:21,899 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 20 [2024-09-20 18:46:21,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:21,899 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-09-20 18:46:21,900 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-20 18:46:21,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:21,900 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2024-09-20 18:46:21,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-20 18:46:21,901 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:21,901 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:21,913 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-20 18:46:22,101 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:22,102 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:22,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:22,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1809000392, now seen corresponding path program 2 times [2024-09-20 18:46:22,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:22,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239974574] [2024-09-20 18:46:22,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:22,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:22,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:22,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:22,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 18:46:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:22,193 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 18:46:22,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:22,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239974574] [2024-09-20 18:46:22,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239974574] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:22,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651739755] [2024-09-20 18:46:22,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:46:22,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:22,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:22,197 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) [2024-09-20 18:46:22,202 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-20 18:46:22,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:46:22,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:22,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-20 18:46:22,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:22,284 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 18:46:22,284 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:22,340 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 18:46:22,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651739755] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:22,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:22,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-09-20 18:46:22,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416196976] [2024-09-20 18:46:22,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:22,342 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-20 18:46:22,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:22,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-20 18:46:22,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-20 18:46:22,343 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 18:46:22,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:22,407 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2024-09-20 18:46:22,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-20 18:46:22,408 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2024-09-20 18:46:22,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:22,409 INFO L225 Difference]: With dead ends: 37 [2024-09-20 18:46:22,409 INFO L226 Difference]: Without dead ends: 35 [2024-09-20 18:46:22,409 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-09-20 18:46:22,410 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:22,411 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 53 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 18:46:22,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-20 18:46:22,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2024-09-20 18:46:22,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-20 18:46:22,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2024-09-20 18:46:22,416 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 21 [2024-09-20 18:46:22,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:22,416 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2024-09-20 18:46:22,416 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 18:46:22,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:22,418 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2024-09-20 18:46:22,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-20 18:46:22,418 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:22,418 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:22,430 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-20 18:46:22,619 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:22,619 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:22,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:22,620 INFO L85 PathProgramCache]: Analyzing trace with hash -835361301, now seen corresponding path program 3 times [2024-09-20 18:46:22,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:22,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515775516] [2024-09-20 18:46:22,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:22,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:22,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:22,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 18:46:22,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:22,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-20 18:46:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:22,754 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 18:46:22,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:22,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515775516] [2024-09-20 18:46:22,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515775516] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:22,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41987293] [2024-09-20 18:46:22,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:46:22,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:22,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:22,759 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) [2024-09-20 18:46:22,764 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-20 18:46:22,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-20 18:46:22,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:22,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-20 18:46:22,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:22,875 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 18:46:22,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:22,931 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 18:46:22,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41987293] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:22,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:22,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-09-20 18:46:22,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991916102] [2024-09-20 18:46:22,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:22,932 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-20 18:46:22,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:22,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-20 18:46:22,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-09-20 18:46:22,933 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 18:46:22,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:22,975 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2024-09-20 18:46:22,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-20 18:46:22,976 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 28 [2024-09-20 18:46:22,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:22,977 INFO L225 Difference]: With dead ends: 49 [2024-09-20 18:46:22,977 INFO L226 Difference]: Without dead ends: 32 [2024-09-20 18:46:22,977 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-09-20 18:46:22,978 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:22,978 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 97 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 18:46:22,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-20 18:46:22,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-09-20 18:46:22,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-20 18:46:22,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2024-09-20 18:46:22,982 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 28 [2024-09-20 18:46:22,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:22,982 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2024-09-20 18:46:22,982 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 18:46:22,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:22,983 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2024-09-20 18:46:22,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-20 18:46:22,983 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:22,983 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:22,996 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:23,187 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:23,188 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:23,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:23,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1662458121, now seen corresponding path program 4 times [2024-09-20 18:46:23,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:23,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232670908] [2024-09-20 18:46:23,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:23,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:23,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:23,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-20 18:46:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:23,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-20 18:46:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:23,280 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 18:46:23,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:23,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232670908] [2024-09-20 18:46:23,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232670908] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:23,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86395086] [2024-09-20 18:46:23,281 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:46:23,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:23,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:23,286 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) [2024-09-20 18:46:23,287 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-20 18:46:23,316 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:46:23,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:23,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-20 18:46:23,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:23,363 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 18:46:23,363 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:23,420 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 18:46:23,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86395086] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:23,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:23,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2024-09-20 18:46:23,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684824522] [2024-09-20 18:46:23,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:23,420 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-20 18:46:23,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:23,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-20 18:46:23,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-09-20 18:46:23,421 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-20 18:46:23,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:23,475 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2024-09-20 18:46:23,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-20 18:46:23,476 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2024-09-20 18:46:23,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:23,477 INFO L225 Difference]: With dead ends: 45 [2024-09-20 18:46:23,478 INFO L226 Difference]: Without dead ends: 43 [2024-09-20 18:46:23,479 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-09-20 18:46:23,479 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:23,479 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 65 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 18:46:23,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-20 18:46:23,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2024-09-20 18:46:23,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 18:46:23,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2024-09-20 18:46:23,490 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 29 [2024-09-20 18:46:23,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:23,491 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2024-09-20 18:46:23,491 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-20 18:46:23,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:23,491 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2024-09-20 18:46:23,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-20 18:46:23,493 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:23,493 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:23,508 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:23,696 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-20 18:46:23,697 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:23,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:23,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1955720628, now seen corresponding path program 5 times [2024-09-20 18:46:23,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:23,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702916297] [2024-09-20 18:46:23,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:23,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:23,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:23,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:23,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-20 18:46:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:23,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-20 18:46:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:23,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-20 18:46:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:23,792 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 18:46:23,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:23,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702916297] [2024-09-20 18:46:23,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702916297] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:23,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734562415] [2024-09-20 18:46:23,792 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:46:23,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:23,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:23,794 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) [2024-09-20 18:46:23,795 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-20 18:46:23,828 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-09-20 18:46:23,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:23,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-20 18:46:23,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:23,979 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 18:46:23,979 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:24,156 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 18:46:24,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734562415] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:24,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:24,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-09-20 18:46:24,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086201962] [2024-09-20 18:46:24,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:24,157 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-20 18:46:24,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:24,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-20 18:46:24,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-09-20 18:46:24,158 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 18:46:24,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:24,277 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2024-09-20 18:46:24,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-20 18:46:24,278 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 36 [2024-09-20 18:46:24,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:24,280 INFO L225 Difference]: With dead ends: 60 [2024-09-20 18:46:24,280 INFO L226 Difference]: Without dead ends: 40 [2024-09-20 18:46:24,281 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 68 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-09-20 18:46:24,281 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:24,283 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 98 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:24,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-20 18:46:24,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-09-20 18:46:24,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 29 states have internal predecessors, (30), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 18:46:24,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2024-09-20 18:46:24,291 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 36 [2024-09-20 18:46:24,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:24,291 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2024-09-20 18:46:24,291 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 18:46:24,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:24,292 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2024-09-20 18:46:24,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-20 18:46:24,293 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:24,293 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:24,306 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-20 18:46:24,493 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:24,495 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:24,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:24,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1715849048, now seen corresponding path program 6 times [2024-09-20 18:46:24,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:24,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684088305] [2024-09-20 18:46:24,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:24,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:24,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:24,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:24,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-20 18:46:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:24,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-20 18:46:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:24,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-20 18:46:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:24,587 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 18:46:24,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:24,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684088305] [2024-09-20 18:46:24,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684088305] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:24,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767816216] [2024-09-20 18:46:24,589 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:46:24,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:24,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:24,590 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) [2024-09-20 18:46:24,591 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-20 18:46:24,622 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-09-20 18:46:24,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:24,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-20 18:46:24,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:24,671 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 18:46:24,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:24,726 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 18:46:24,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767816216] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:24,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:24,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-09-20 18:46:24,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029267197] [2024-09-20 18:46:24,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:24,727 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-20 18:46:24,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:24,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-20 18:46:24,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-09-20 18:46:24,728 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-20 18:46:24,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:24,769 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2024-09-20 18:46:24,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-20 18:46:24,769 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 37 [2024-09-20 18:46:24,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:24,770 INFO L225 Difference]: With dead ends: 53 [2024-09-20 18:46:24,770 INFO L226 Difference]: Without dead ends: 51 [2024-09-20 18:46:24,770 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 75 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-09-20 18:46:24,771 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:24,771 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 58 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 18:46:24,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-09-20 18:46:24,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2024-09-20 18:46:24,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 34 states have internal predecessors, (35), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 18:46:24,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2024-09-20 18:46:24,775 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 37 [2024-09-20 18:46:24,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:24,776 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2024-09-20 18:46:24,776 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-20 18:46:24,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:24,776 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2024-09-20 18:46:24,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-20 18:46:24,777 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:24,777 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:24,788 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:24,977 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:24,978 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:24,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:24,978 INFO L85 PathProgramCache]: Analyzing trace with hash 640103115, now seen corresponding path program 7 times [2024-09-20 18:46:24,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:24,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751270545] [2024-09-20 18:46:24,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:24,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:25,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:25,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:25,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-20 18:46:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:25,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-20 18:46:25,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:25,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-20 18:46:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:25,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-20 18:46:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:25,083 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 24 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 18:46:25,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:25,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751270545] [2024-09-20 18:46:25,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751270545] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:25,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251214998] [2024-09-20 18:46:25,084 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:46:25,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:25,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:25,085 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) [2024-09-20 18:46:25,086 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-20 18:46:25,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:25,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-20 18:46:25,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:25,243 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 18:46:25,243 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:25,333 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 18:46:25,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251214998] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:25,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:25,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-09-20 18:46:25,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126727068] [2024-09-20 18:46:25,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:25,335 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-20 18:46:25,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:25,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-20 18:46:25,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2024-09-20 18:46:25,336 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-20 18:46:25,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:25,390 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2024-09-20 18:46:25,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-20 18:46:25,390 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 44 [2024-09-20 18:46:25,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:25,391 INFO L225 Difference]: With dead ends: 71 [2024-09-20 18:46:25,391 INFO L226 Difference]: Without dead ends: 48 [2024-09-20 18:46:25,391 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 83 SyntacticMatches, 9 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2024-09-20 18:46:25,392 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:25,392 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 109 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 18:46:25,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-20 18:46:25,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-09-20 18:46:25,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 35 states have internal predecessors, (36), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 18:46:25,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2024-09-20 18:46:25,397 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 44 [2024-09-20 18:46:25,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:25,398 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2024-09-20 18:46:25,398 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-20 18:46:25,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:25,398 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2024-09-20 18:46:25,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-09-20 18:46:25,399 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:25,399 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:25,415 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-20 18:46:25,599 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:25,600 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:25,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:25,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1884349481, now seen corresponding path program 8 times [2024-09-20 18:46:25,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:25,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786361837] [2024-09-20 18:46:25,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:25,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:25,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:25,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-20 18:46:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:25,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-20 18:46:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:25,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 18:46:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:25,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 18:46:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:25,722 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 18 proven. 31 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 18:46:25,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:25,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786361837] [2024-09-20 18:46:25,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786361837] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:25,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020954888] [2024-09-20 18:46:25,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:46:25,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:25,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:25,724 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) [2024-09-20 18:46:25,726 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-20 18:46:25,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:46:25,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:25,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-20 18:46:25,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:25,803 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 18:46:25,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:25,888 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 18:46:25,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020954888] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:25,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:25,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 13 [2024-09-20 18:46:25,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101244891] [2024-09-20 18:46:25,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:25,889 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-20 18:46:25,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:25,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-20 18:46:25,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-09-20 18:46:25,890 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 18:46:25,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:25,937 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2024-09-20 18:46:25,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-20 18:46:25,938 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 45 [2024-09-20 18:46:25,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:25,938 INFO L225 Difference]: With dead ends: 61 [2024-09-20 18:46:25,939 INFO L226 Difference]: Without dead ends: 59 [2024-09-20 18:46:25,939 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 90 SyntacticMatches, 12 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-09-20 18:46:25,939 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:25,939 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 81 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 18:46:25,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-20 18:46:25,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2024-09-20 18:46:25,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 40 states have internal predecessors, (41), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-20 18:46:25,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2024-09-20 18:46:25,944 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 45 [2024-09-20 18:46:25,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:25,944 INFO L474 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2024-09-20 18:46:25,944 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 18:46:25,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:25,945 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2024-09-20 18:46:25,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-09-20 18:46:25,945 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:25,945 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:25,957 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:26,145 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-20 18:46:26,147 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:26,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:26,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1341349524, now seen corresponding path program 9 times [2024-09-20 18:46:26,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:26,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763220005] [2024-09-20 18:46:26,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:26,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:26,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:26,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:26,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-20 18:46:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:26,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-20 18:46:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:26,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 18:46:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:26,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 18:46:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:26,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 18:46:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:26,276 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 37 proven. 28 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-20 18:46:26,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:26,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763220005] [2024-09-20 18:46:26,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763220005] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:26,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275878744] [2024-09-20 18:46:26,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:46:26,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:26,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:26,278 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) [2024-09-20 18:46:26,281 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-20 18:46:26,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-20 18:46:26,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:26,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-20 18:46:26,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:26,449 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-20 18:46:26,450 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:26,551 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-20 18:46:26,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275878744] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:26,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:26,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-09-20 18:46:26,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427175392] [2024-09-20 18:46:26,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:26,552 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-20 18:46:26,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:26,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-20 18:46:26,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2024-09-20 18:46:26,553 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-20 18:46:26,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:26,612 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2024-09-20 18:46:26,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-20 18:46:26,613 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 52 [2024-09-20 18:46:26,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:26,613 INFO L225 Difference]: With dead ends: 82 [2024-09-20 18:46:26,613 INFO L226 Difference]: Without dead ends: 56 [2024-09-20 18:46:26,614 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 98 SyntacticMatches, 11 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2024-09-20 18:46:26,614 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:26,614 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 134 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:26,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-09-20 18:46:26,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-09-20 18:46:26,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.05) internal successors, (42), 41 states have internal predecessors, (42), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-20 18:46:26,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2024-09-20 18:46:26,619 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 52 [2024-09-20 18:46:26,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:26,619 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2024-09-20 18:46:26,619 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-20 18:46:26,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:26,619 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2024-09-20 18:46:26,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-09-20 18:46:26,620 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:26,620 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:26,632 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-20 18:46:26,820 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-20 18:46:26,821 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:26,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:26,821 INFO L85 PathProgramCache]: Analyzing trace with hash -556745096, now seen corresponding path program 10 times [2024-09-20 18:46:26,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:26,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427165813] [2024-09-20 18:46:26,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:26,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:26,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:26,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-20 18:46:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:26,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-20 18:46:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:26,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-20 18:46:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:26,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-20 18:46:26,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:26,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 18:46:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:26,932 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 25 proven. 46 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-20 18:46:26,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:26,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427165813] [2024-09-20 18:46:26,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427165813] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:26,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266249852] [2024-09-20 18:46:26,933 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:46:26,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:26,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:26,934 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) [2024-09-20 18:46:26,935 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-20 18:46:26,971 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:46:26,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:26,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-20 18:46:26,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:27,017 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-20 18:46:27,017 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:27,101 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-20 18:46:27,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266249852] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:27,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:27,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 14 [2024-09-20 18:46:27,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540466093] [2024-09-20 18:46:27,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:27,102 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-20 18:46:27,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:27,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-20 18:46:27,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-09-20 18:46:27,103 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 18:46:27,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:27,149 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2024-09-20 18:46:27,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-20 18:46:27,150 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 53 [2024-09-20 18:46:27,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:27,150 INFO L225 Difference]: With dead ends: 69 [2024-09-20 18:46:27,150 INFO L226 Difference]: Without dead ends: 67 [2024-09-20 18:46:27,151 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 109 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-09-20 18:46:27,151 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:27,151 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 64 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 18:46:27,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-20 18:46:27,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2024-09-20 18:46:27,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 46 states have internal predecessors, (47), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 18:46:27,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2024-09-20 18:46:27,156 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 53 [2024-09-20 18:46:27,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:27,156 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2024-09-20 18:46:27,156 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 18:46:27,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:27,156 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2024-09-20 18:46:27,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-20 18:46:27,157 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:27,157 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:27,169 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-20 18:46:27,361 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:27,362 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:27,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:27,362 INFO L85 PathProgramCache]: Analyzing trace with hash 483260331, now seen corresponding path program 11 times [2024-09-20 18:46:27,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:27,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642092828] [2024-09-20 18:46:27,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:27,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-20 18:46:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-20 18:46:27,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-20 18:46:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-20 18:46:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 18:46:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 18:46:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,536 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 53 proven. 37 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-20 18:46:27,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:27,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642092828] [2024-09-20 18:46:27,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642092828] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:27,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106581169] [2024-09-20 18:46:27,537 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:46:27,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:27,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:27,538 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) [2024-09-20 18:46:27,540 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-20 18:46:27,577 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-09-20 18:46:27,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:27,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-20 18:46:27,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:27,720 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-20 18:46:27,720 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:27,839 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-20 18:46:27,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106581169] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:27,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:27,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-09-20 18:46:27,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143406468] [2024-09-20 18:46:27,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:27,840 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-20 18:46:27,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:27,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-20 18:46:27,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2024-09-20 18:46:27,841 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 26 states have internal predecessors, (48), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-20 18:46:27,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:27,905 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2024-09-20 18:46:27,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-20 18:46:27,906 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 26 states have internal predecessors, (48), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 60 [2024-09-20 18:46:27,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:27,907 INFO L225 Difference]: With dead ends: 93 [2024-09-20 18:46:27,907 INFO L226 Difference]: Without dead ends: 64 [2024-09-20 18:46:27,907 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 113 SyntacticMatches, 13 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2024-09-20 18:46:27,908 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:27,908 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 153 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:27,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-09-20 18:46:27,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-09-20 18:46:27,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 47 states have internal predecessors, (48), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 18:46:27,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2024-09-20 18:46:27,912 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 60 [2024-09-20 18:46:27,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:27,913 INFO L474 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2024-09-20 18:46:27,913 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 26 states have internal predecessors, (48), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-20 18:46:27,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:27,913 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2024-09-20 18:46:27,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-20 18:46:27,913 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:27,914 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:27,925 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-20 18:46:28,114 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-20 18:46:28,114 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:28,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:28,115 INFO L85 PathProgramCache]: Analyzing trace with hash -77969225, now seen corresponding path program 12 times [2024-09-20 18:46:28,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:28,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534553202] [2024-09-20 18:46:28,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:28,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:28,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:28,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:28,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-20 18:46:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:28,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-20 18:46:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:28,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 18:46:28,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:28,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 18:46:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:28,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 18:46:28,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:28,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 18:46:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:28,246 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 33 proven. 64 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-20 18:46:28,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:28,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534553202] [2024-09-20 18:46:28,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534553202] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:28,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941036007] [2024-09-20 18:46:28,246 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:46:28,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:28,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:28,250 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) [2024-09-20 18:46:28,250 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-20 18:46:28,289 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-20 18:46:28,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:28,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-20 18:46:28,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:28,339 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-20 18:46:28,339 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:28,438 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-20 18:46:28,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941036007] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:28,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:28,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 15 [2024-09-20 18:46:28,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534675027] [2024-09-20 18:46:28,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:28,440 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-20 18:46:28,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:28,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-20 18:46:28,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-09-20 18:46:28,440 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 13 states have internal predecessors, (34), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-20 18:46:28,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:28,503 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2024-09-20 18:46:28,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-20 18:46:28,503 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 13 states have internal predecessors, (34), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 61 [2024-09-20 18:46:28,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:28,504 INFO L225 Difference]: With dead ends: 77 [2024-09-20 18:46:28,504 INFO L226 Difference]: Without dead ends: 75 [2024-09-20 18:46:28,504 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 126 SyntacticMatches, 14 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2024-09-20 18:46:28,505 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:28,505 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 100 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:28,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-09-20 18:46:28,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2024-09-20 18:46:28,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 52 states have internal predecessors, (53), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-20 18:46:28,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2024-09-20 18:46:28,509 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 61 [2024-09-20 18:46:28,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:28,510 INFO L474 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2024-09-20 18:46:28,510 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 13 states have internal predecessors, (34), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-20 18:46:28,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:28,510 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2024-09-20 18:46:28,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-20 18:46:28,511 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:28,511 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:28,522 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-20 18:46:28,714 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-20 18:46:28,715 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:28,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:28,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1992243340, now seen corresponding path program 13 times [2024-09-20 18:46:28,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:28,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394544397] [2024-09-20 18:46:28,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:28,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:28,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:28,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:28,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:28,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-20 18:46:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:28,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-20 18:46:28,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:28,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 18:46:28,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:28,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 18:46:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:28,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 18:46:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:28,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 18:46:28,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:28,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 18:46:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:28,911 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 72 proven. 47 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-20 18:46:28,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:28,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394544397] [2024-09-20 18:46:28,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394544397] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:28,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645466904] [2024-09-20 18:46:28,911 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:46:28,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:28,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:28,916 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) [2024-09-20 18:46:28,917 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-20 18:46:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:28,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-20 18:46:28,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:29,129 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-20 18:46:29,130 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:29,270 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-20 18:46:29,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645466904] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:29,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:29,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-09-20 18:46:29,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010913355] [2024-09-20 18:46:29,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:29,271 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-20 18:46:29,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:29,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-20 18:46:29,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2024-09-20 18:46:29,272 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 29 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 29 states have internal predecessors, (53), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-20 18:46:29,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:29,354 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2024-09-20 18:46:29,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-20 18:46:29,355 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 29 states have internal predecessors, (53), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 68 [2024-09-20 18:46:29,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:29,355 INFO L225 Difference]: With dead ends: 104 [2024-09-20 18:46:29,356 INFO L226 Difference]: Without dead ends: 72 [2024-09-20 18:46:29,356 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 128 SyntacticMatches, 15 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2024-09-20 18:46:29,356 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:29,356 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 210 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:29,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-09-20 18:46:29,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-09-20 18:46:29,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 53 states have internal predecessors, (54), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-20 18:46:29,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2024-09-20 18:46:29,361 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 68 [2024-09-20 18:46:29,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:29,362 INFO L474 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2024-09-20 18:46:29,362 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 29 states have internal predecessors, (53), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-20 18:46:29,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:29,362 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2024-09-20 18:46:29,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-09-20 18:46:29,362 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:29,363 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:29,374 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:29,566 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-20 18:46:29,567 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:29,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:29,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1549812328, now seen corresponding path program 14 times [2024-09-20 18:46:29,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:29,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666830089] [2024-09-20 18:46:29,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:29,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:29,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:29,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:29,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:29,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 18:46:29,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:29,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 18:46:29,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:29,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-20 18:46:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:29,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 18:46:29,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:29,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-20 18:46:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:29,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 18:46:29,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:29,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-20 18:46:29,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:29,730 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 42 proven. 85 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-20 18:46:29,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:29,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666830089] [2024-09-20 18:46:29,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666830089] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:29,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801705885] [2024-09-20 18:46:29,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:46:29,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:29,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:29,732 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) [2024-09-20 18:46:29,734 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-20 18:46:29,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:46:29,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:29,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-20 18:46:29,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:29,834 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-20 18:46:29,835 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:29,976 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-20 18:46:29,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801705885] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:29,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:29,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 16 [2024-09-20 18:46:29,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597567632] [2024-09-20 18:46:29,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:29,977 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-20 18:46:29,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:29,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-20 18:46:29,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-09-20 18:46:29,978 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 18:46:30,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:30,045 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2024-09-20 18:46:30,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-20 18:46:30,046 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 69 [2024-09-20 18:46:30,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:30,047 INFO L225 Difference]: With dead ends: 85 [2024-09-20 18:46:30,047 INFO L226 Difference]: Without dead ends: 83 [2024-09-20 18:46:30,047 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 141 SyntacticMatches, 18 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2024-09-20 18:46:30,047 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:30,048 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 80 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:30,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-09-20 18:46:30,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2024-09-20 18:46:30,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 58 states have internal predecessors, (59), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-20 18:46:30,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2024-09-20 18:46:30,052 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 69 [2024-09-20 18:46:30,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:30,053 INFO L474 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2024-09-20 18:46:30,053 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 18:46:30,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:30,053 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2024-09-20 18:46:30,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-09-20 18:46:30,053 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:30,054 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:30,066 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:30,254 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-20 18:46:30,254 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:30,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:30,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1008186507, now seen corresponding path program 15 times [2024-09-20 18:46:30,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:30,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062618066] [2024-09-20 18:46:30,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:30,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:30,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:30,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:30,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 18:46:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:30,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 18:46:30,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:30,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-20 18:46:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:30,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 18:46:30,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:30,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-20 18:46:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:30,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 18:46:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:30,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-20 18:46:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:30,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 18:46:30,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:30,448 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 94 proven. 58 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-20 18:46:30,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:30,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062618066] [2024-09-20 18:46:30,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062618066] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:30,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624826700] [2024-09-20 18:46:30,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:46:30,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:30,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:30,452 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) [2024-09-20 18:46:30,456 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-20 18:46:30,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-09-20 18:46:30,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:30,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-20 18:46:30,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:30,704 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-20 18:46:30,704 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:30,901 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-20 18:46:30,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624826700] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:30,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:30,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2024-09-20 18:46:30,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403796059] [2024-09-20 18:46:30,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:30,902 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-20 18:46:30,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:30,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-20 18:46:30,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2024-09-20 18:46:30,903 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand has 32 states, 32 states have (on average 1.8125) internal successors, (58), 32 states have internal predecessors, (58), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-20 18:46:30,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:30,990 INFO L93 Difference]: Finished difference Result 115 states and 125 transitions. [2024-09-20 18:46:30,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-20 18:46:30,991 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.8125) internal successors, (58), 32 states have internal predecessors, (58), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 76 [2024-09-20 18:46:30,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:30,991 INFO L225 Difference]: With dead ends: 115 [2024-09-20 18:46:30,992 INFO L226 Difference]: Without dead ends: 80 [2024-09-20 18:46:30,992 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 143 SyntacticMatches, 17 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2024-09-20 18:46:30,993 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:30,993 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 160 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:30,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-09-20 18:46:30,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-09-20 18:46:30,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 59 states have internal predecessors, (60), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-20 18:46:30,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2024-09-20 18:46:30,998 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 76 [2024-09-20 18:46:30,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:30,998 INFO L474 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2024-09-20 18:46:30,998 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.8125) internal successors, (58), 32 states have internal predecessors, (58), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-20 18:46:30,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:30,999 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2024-09-20 18:46:30,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-09-20 18:46:30,999 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:30,999 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:31,011 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-09-20 18:46:31,203 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:31,204 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:31,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:31,204 INFO L85 PathProgramCache]: Analyzing trace with hash 165178775, now seen corresponding path program 16 times [2024-09-20 18:46:31,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:31,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111214443] [2024-09-20 18:46:31,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:31,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:31,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:31,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-20 18:46:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:31,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-20 18:46:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:31,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-20 18:46:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:31,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 18:46:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:31,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 18:46:31,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:31,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-20 18:46:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:31,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 18:46:31,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:31,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-20 18:46:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:31,374 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 52 proven. 109 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-20 18:46:31,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:31,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111214443] [2024-09-20 18:46:31,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111214443] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:31,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553298988] [2024-09-20 18:46:31,374 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:46:31,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:31,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:31,376 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) [2024-09-20 18:46:31,377 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-20 18:46:31,418 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:46:31,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:31,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-20 18:46:31,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:31,478 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 61 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-20 18:46:31,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:31,620 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 61 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-20 18:46:31,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553298988] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:31,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:31,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 17 [2024-09-20 18:46:31,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196124599] [2024-09-20 18:46:31,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:31,622 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-20 18:46:31,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:31,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-20 18:46:31,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2024-09-20 18:46:31,622 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-20 18:46:31,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:31,687 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2024-09-20 18:46:31,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-20 18:46:31,688 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 77 [2024-09-20 18:46:31,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:31,689 INFO L225 Difference]: With dead ends: 93 [2024-09-20 18:46:31,689 INFO L226 Difference]: Without dead ends: 91 [2024-09-20 18:46:31,689 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 160 SyntacticMatches, 18 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2024-09-20 18:46:31,690 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:31,690 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 67 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:31,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-09-20 18:46:31,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2024-09-20 18:46:31,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 64 states have internal predecessors, (65), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-20 18:46:31,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2024-09-20 18:46:31,698 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 77 [2024-09-20 18:46:31,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:31,698 INFO L474 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2024-09-20 18:46:31,698 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-20 18:46:31,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:31,698 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2024-09-20 18:46:31,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-09-20 18:46:31,699 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:31,699 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:31,710 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-09-20 18:46:31,899 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:31,900 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:31,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:31,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1305991084, now seen corresponding path program 17 times [2024-09-20 18:46:31,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:31,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866925881] [2024-09-20 18:46:31,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:31,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:32,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-20 18:46:32,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-20 18:46:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-20 18:46:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 18:46:32,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 18:46:32,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-20 18:46:32,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 18:46:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-20 18:46:32,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 18:46:32,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,149 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 119 proven. 70 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-20 18:46:32,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:32,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866925881] [2024-09-20 18:46:32,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866925881] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:32,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709889123] [2024-09-20 18:46:32,149 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:46:32,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:32,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:32,151 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) [2024-09-20 18:46:32,156 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-20 18:46:32,231 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-09-20 18:46:32,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:32,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-20 18:46:32,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:32,479 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-20 18:46:32,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:32,676 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-20 18:46:32,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709889123] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:32,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:32,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2024-09-20 18:46:32,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495560321] [2024-09-20 18:46:32,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:32,677 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-20 18:46:32,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:32,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-20 18:46:32,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2024-09-20 18:46:32,678 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand has 35 states, 35 states have (on average 1.8) internal successors, (63), 35 states have internal predecessors, (63), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-20 18:46:32,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:32,782 INFO L93 Difference]: Finished difference Result 126 states and 137 transitions. [2024-09-20 18:46:32,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-20 18:46:32,782 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.8) internal successors, (63), 35 states have internal predecessors, (63), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 84 [2024-09-20 18:46:32,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:32,783 INFO L225 Difference]: With dead ends: 126 [2024-09-20 18:46:32,783 INFO L226 Difference]: Without dead ends: 88 [2024-09-20 18:46:32,783 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 158 SyntacticMatches, 19 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2024-09-20 18:46:32,784 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:32,784 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 209 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:32,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-09-20 18:46:32,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-09-20 18:46:32,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 64 states have (on average 1.03125) internal successors, (66), 65 states have internal predecessors, (66), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-20 18:46:32,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2024-09-20 18:46:32,789 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 84 [2024-09-20 18:46:32,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:32,790 INFO L474 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2024-09-20 18:46:32,790 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.8) internal successors, (63), 35 states have internal predecessors, (63), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-20 18:46:32,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:32,790 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2024-09-20 18:46:32,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-09-20 18:46:32,791 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:32,791 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:32,803 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-09-20 18:46:32,994 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:32,994 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:32,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:32,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1023097672, now seen corresponding path program 18 times [2024-09-20 18:46:32,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:32,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164158553] [2024-09-20 18:46:32,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:32,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:33,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:33,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-20 18:46:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:33,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-20 18:46:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:33,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-20 18:46:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:33,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-20 18:46:33,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:33,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 18:46:33,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:33,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 18:46:33,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:33,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-20 18:46:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:33,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 18:46:33,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:33,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-20 18:46:33,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:33,242 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 63 proven. 136 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-20 18:46:33,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:33,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164158553] [2024-09-20 18:46:33,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164158553] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:33,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508034995] [2024-09-20 18:46:33,242 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:46:33,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:33,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:33,244 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) [2024-09-20 18:46:33,245 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-20 18:46:33,292 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-09-20 18:46:33,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:33,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-20 18:46:33,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:33,395 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 73 proven. 126 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-20 18:46:33,396 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:33,561 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 73 proven. 126 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-20 18:46:33,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508034995] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:33,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:33,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 18 [2024-09-20 18:46:33,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148745751] [2024-09-20 18:46:33,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:33,562 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-20 18:46:33,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:33,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-20 18:46:33,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2024-09-20 18:46:33,563 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-20 18:46:33,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:33,631 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2024-09-20 18:46:33,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-20 18:46:33,632 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 85 [2024-09-20 18:46:33,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:33,633 INFO L225 Difference]: With dead ends: 101 [2024-09-20 18:46:33,633 INFO L226 Difference]: Without dead ends: 99 [2024-09-20 18:46:33,633 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 177 SyntacticMatches, 20 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2024-09-20 18:46:33,634 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:33,634 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 82 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:33,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-09-20 18:46:33,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2024-09-20 18:46:33,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 70 states have internal predecessors, (71), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-20 18:46:33,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2024-09-20 18:46:33,638 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 85 [2024-09-20 18:46:33,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:33,639 INFO L474 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2024-09-20 18:46:33,639 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-20 18:46:33,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:33,639 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2024-09-20 18:46:33,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-09-20 18:46:33,639 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:33,640 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:33,663 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:33,840 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-09-20 18:46:33,840 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:33,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:33,840 INFO L85 PathProgramCache]: Analyzing trace with hash 359819627, now seen corresponding path program 19 times [2024-09-20 18:46:33,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:33,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319204489] [2024-09-20 18:46:33,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:33,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:33,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:34,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-20 18:46:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-20 18:46:34,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-20 18:46:34,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-20 18:46:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 18:46:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 18:46:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-20 18:46:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 18:46:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-20 18:46:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 18:46:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,099 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 147 proven. 83 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-20 18:46:34,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:34,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319204489] [2024-09-20 18:46:34,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319204489] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:34,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568812169] [2024-09-20 18:46:34,100 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:46:34,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:34,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:34,101 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) [2024-09-20 18:46:34,103 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-20 18:46:34,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:34,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-20 18:46:34,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:34,420 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-20 18:46:34,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:34,653 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-20 18:46:34,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568812169] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:34,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:34,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 38 [2024-09-20 18:46:34,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588273412] [2024-09-20 18:46:34,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:34,654 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-20 18:46:34,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:34,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-20 18:46:34,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=1077, Unknown=0, NotChecked=0, Total=1406 [2024-09-20 18:46:34,657 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand has 38 states, 38 states have (on average 1.7894736842105263) internal successors, (68), 38 states have internal predecessors, (68), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-20 18:46:34,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:34,792 INFO L93 Difference]: Finished difference Result 137 states and 149 transitions. [2024-09-20 18:46:34,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-20 18:46:34,793 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.7894736842105263) internal successors, (68), 38 states have internal predecessors, (68), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 92 [2024-09-20 18:46:34,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:34,793 INFO L225 Difference]: With dead ends: 137 [2024-09-20 18:46:34,794 INFO L226 Difference]: Without dead ends: 96 [2024-09-20 18:46:34,794 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 173 SyntacticMatches, 21 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=329, Invalid=1077, Unknown=0, NotChecked=0, Total=1406 [2024-09-20 18:46:34,794 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:34,795 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 229 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:34,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-09-20 18:46:34,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-09-20 18:46:34,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 71 states have internal predecessors, (72), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-20 18:46:34,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2024-09-20 18:46:34,806 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 92 [2024-09-20 18:46:34,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:34,806 INFO L474 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2024-09-20 18:46:34,807 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.7894736842105263) internal successors, (68), 38 states have internal predecessors, (68), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-20 18:46:34,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:34,807 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2024-09-20 18:46:34,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-09-20 18:46:34,808 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:34,808 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:34,821 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-09-20 18:46:35,009 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-09-20 18:46:35,009 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:35,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:35,009 INFO L85 PathProgramCache]: Analyzing trace with hash -325612937, now seen corresponding path program 20 times [2024-09-20 18:46:35,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:35,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500483353] [2024-09-20 18:46:35,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:35,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-20 18:46:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-20 18:46:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-20 18:46:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 18:46:35,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-20 18:46:35,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-20 18:46:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 18:46:35,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 18:46:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 18:46:35,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-20 18:46:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,212 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 75 proven. 166 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-20 18:46:35,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:35,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500483353] [2024-09-20 18:46:35,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500483353] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:35,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783085574] [2024-09-20 18:46:35,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:46:35,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:35,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:35,217 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) [2024-09-20 18:46:35,221 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-20 18:46:35,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:46:35,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:35,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-20 18:46:35,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:35,338 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 86 proven. 155 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-20 18:46:35,339 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:35,582 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 86 proven. 155 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-20 18:46:35,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783085574] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:35,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:35,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 19 [2024-09-20 18:46:35,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126945380] [2024-09-20 18:46:35,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:35,587 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-20 18:46:35,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:35,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-20 18:46:35,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2024-09-20 18:46:35,589 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 17 states have internal predecessors, (46), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-20 18:46:35,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:35,677 INFO L93 Difference]: Finished difference Result 109 states and 111 transitions. [2024-09-20 18:46:35,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-20 18:46:35,677 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 17 states have internal predecessors, (46), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 93 [2024-09-20 18:46:35,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:35,678 INFO L225 Difference]: With dead ends: 109 [2024-09-20 18:46:35,679 INFO L226 Difference]: Without dead ends: 107 [2024-09-20 18:46:35,680 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 192 SyntacticMatches, 24 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2024-09-20 18:46:35,680 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:35,681 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 73 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:35,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-09-20 18:46:35,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103. [2024-09-20 18:46:35,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 76 states have internal predecessors, (77), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-20 18:46:35,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2024-09-20 18:46:35,689 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 93 [2024-09-20 18:46:35,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:35,689 INFO L474 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2024-09-20 18:46:35,689 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 17 states have internal predecessors, (46), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-20 18:46:35,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:35,690 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2024-09-20 18:46:35,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-09-20 18:46:35,690 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:35,690 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:35,702 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-09-20 18:46:35,894 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:35,894 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:35,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:35,895 INFO L85 PathProgramCache]: Analyzing trace with hash 740851404, now seen corresponding path program 21 times [2024-09-20 18:46:35,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:35,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743257154] [2024-09-20 18:46:35,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:35,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:35,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-20 18:46:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-20 18:46:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-20 18:46:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 18:46:36,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-20 18:46:36,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-20 18:46:36,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 18:46:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 18:46:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 18:46:36,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-20 18:46:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 18:46:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:36,210 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 178 proven. 97 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-20 18:46:36,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:36,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743257154] [2024-09-20 18:46:36,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743257154] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:36,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367828505] [2024-09-20 18:46:36,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:46:36,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:36,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:36,212 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) [2024-09-20 18:46:36,213 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-20 18:46:36,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-09-20 18:46:36,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:36,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-20 18:46:36,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:36,566 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-20 18:46:36,566 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:36,825 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-20 18:46:36,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367828505] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:36,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:36,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 41 [2024-09-20 18:46:36,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255107325] [2024-09-20 18:46:36,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:36,826 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-20 18:46:36,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:36,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-20 18:46:36,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=1258, Unknown=0, NotChecked=0, Total=1640 [2024-09-20 18:46:36,827 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand has 41 states, 41 states have (on average 1.7804878048780488) internal successors, (73), 41 states have internal predecessors, (73), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-20 18:46:36,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:36,989 INFO L93 Difference]: Finished difference Result 148 states and 161 transitions. [2024-09-20 18:46:36,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-20 18:46:36,989 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.7804878048780488) internal successors, (73), 41 states have internal predecessors, (73), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 100 [2024-09-20 18:46:36,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:36,990 INFO L225 Difference]: With dead ends: 148 [2024-09-20 18:46:36,990 INFO L226 Difference]: Without dead ends: 104 [2024-09-20 18:46:36,991 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 188 SyntacticMatches, 23 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1001 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=382, Invalid=1258, Unknown=0, NotChecked=0, Total=1640 [2024-09-20 18:46:36,992 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:36,992 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 244 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:36,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-09-20 18:46:36,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-09-20 18:46:37,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 77 states have internal predecessors, (78), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-20 18:46:37,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2024-09-20 18:46:37,000 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 100 [2024-09-20 18:46:37,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:37,001 INFO L474 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2024-09-20 18:46:37,001 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.7804878048780488) internal successors, (73), 41 states have internal predecessors, (73), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-20 18:46:37,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:37,001 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2024-09-20 18:46:37,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-09-20 18:46:37,002 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:37,002 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:37,014 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:37,202 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-09-20 18:46:37,202 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:37,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:37,203 INFO L85 PathProgramCache]: Analyzing trace with hash -741223464, now seen corresponding path program 22 times [2024-09-20 18:46:37,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:37,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623968359] [2024-09-20 18:46:37,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:37,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-20 18:46:37,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 18:46:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 18:46:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 18:46:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-20 18:46:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 18:46:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 18:46:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 18:46:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 18:46:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:46:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 18:46:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,455 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 88 proven. 199 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-20 18:46:37,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:37,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623968359] [2024-09-20 18:46:37,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623968359] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:37,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077546431] [2024-09-20 18:46:37,456 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:46:37,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:37,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:37,457 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) [2024-09-20 18:46:37,458 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-20 18:46:37,508 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:46:37,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:37,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-20 18:46:37,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:37,587 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 100 proven. 187 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-20 18:46:37,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:37,808 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 100 proven. 187 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-20 18:46:37,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077546431] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:37,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:37,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 20 [2024-09-20 18:46:37,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864337075] [2024-09-20 18:46:37,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:37,809 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-20 18:46:37,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:37,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-20 18:46:37,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2024-09-20 18:46:37,810 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 18 states have internal predecessors, (49), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-20 18:46:37,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:37,902 INFO L93 Difference]: Finished difference Result 117 states and 119 transitions. [2024-09-20 18:46:37,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-20 18:46:37,902 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 18 states have internal predecessors, (49), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 101 [2024-09-20 18:46:37,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:37,904 INFO L225 Difference]: With dead ends: 117 [2024-09-20 18:46:37,905 INFO L226 Difference]: Without dead ends: 115 [2024-09-20 18:46:37,905 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 211 SyntacticMatches, 24 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2024-09-20 18:46:37,905 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:37,905 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 80 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:37,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-09-20 18:46:37,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2024-09-20 18:46:37,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 81 states have (on average 1.0246913580246915) internal successors, (83), 82 states have internal predecessors, (83), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-20 18:46:37,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2024-09-20 18:46:37,917 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 101 [2024-09-20 18:46:37,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:37,917 INFO L474 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2024-09-20 18:46:37,917 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 18 states have internal predecessors, (49), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-20 18:46:37,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:37,918 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2024-09-20 18:46:37,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-09-20 18:46:37,918 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:37,918 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:37,935 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:38,118 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-09-20 18:46:38,119 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:38,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:38,119 INFO L85 PathProgramCache]: Analyzing trace with hash 567023179, now seen corresponding path program 23 times [2024-09-20 18:46:38,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:38,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119543367] [2024-09-20 18:46:38,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:38,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-20 18:46:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 18:46:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 18:46:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 18:46:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-20 18:46:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 18:46:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 18:46:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 18:46:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 18:46:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:46:38,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 18:46:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 18:46:38,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:38,484 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 212 proven. 112 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-20 18:46:38,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:38,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119543367] [2024-09-20 18:46:38,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119543367] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:38,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768156379] [2024-09-20 18:46:38,484 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:46:38,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:38,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:38,489 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) [2024-09-20 18:46:38,491 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-09-20 18:46:38,550 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-09-20 18:46:38,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:38,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-20 18:46:38,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:38,917 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-20 18:46:38,917 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:39,192 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-20 18:46:39,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768156379] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:39,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:39,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 44 [2024-09-20 18:46:39,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673855895] [2024-09-20 18:46:39,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:39,194 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-20 18:46:39,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:39,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-20 18:46:39,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=1453, Unknown=0, NotChecked=0, Total=1892 [2024-09-20 18:46:39,196 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand has 44 states, 44 states have (on average 1.7727272727272727) internal successors, (78), 44 states have internal predecessors, (78), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-20 18:46:39,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:39,319 INFO L93 Difference]: Finished difference Result 159 states and 173 transitions. [2024-09-20 18:46:39,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-20 18:46:39,319 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.7727272727272727) internal successors, (78), 44 states have internal predecessors, (78), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 108 [2024-09-20 18:46:39,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:39,320 INFO L225 Difference]: With dead ends: 159 [2024-09-20 18:46:39,320 INFO L226 Difference]: Without dead ends: 112 [2024-09-20 18:46:39,321 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 203 SyntacticMatches, 25 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1164 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=439, Invalid=1453, Unknown=0, NotChecked=0, Total=1892 [2024-09-20 18:46:39,321 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:39,321 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 204 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:39,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-09-20 18:46:39,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-09-20 18:46:39,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 82 states have (on average 1.024390243902439) internal successors, (84), 83 states have internal predecessors, (84), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-20 18:46:39,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2024-09-20 18:46:39,327 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 108 [2024-09-20 18:46:39,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:39,328 INFO L474 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2024-09-20 18:46:39,328 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.7727272727272727) internal successors, (78), 44 states have internal predecessors, (78), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-20 18:46:39,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:39,328 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2024-09-20 18:46:39,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-09-20 18:46:39,329 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:39,329 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:39,341 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:39,532 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-09-20 18:46:39,533 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:39,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:39,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1132093609, now seen corresponding path program 24 times [2024-09-20 18:46:39,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:39,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282965011] [2024-09-20 18:46:39,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:39,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:39,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:39,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-20 18:46:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:39,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-20 18:46:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:39,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-20 18:46:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:39,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 18:46:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:39,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 18:46:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:39,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 18:46:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:39,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 18:46:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:39,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 18:46:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:39,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 18:46:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:39,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-20 18:46:39,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:39,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 18:46:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:39,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 18:46:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:39,765 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 102 proven. 235 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-20 18:46:39,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:39,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282965011] [2024-09-20 18:46:39,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282965011] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:39,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164940502] [2024-09-20 18:46:39,765 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:46:39,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:39,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:39,767 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) [2024-09-20 18:46:39,769 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-09-20 18:46:39,818 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-20 18:46:39,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:39,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-20 18:46:39,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:39,887 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 115 proven. 222 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-20 18:46:39,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:40,097 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 115 proven. 222 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-20 18:46:40,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164940502] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:40,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:40,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 21 [2024-09-20 18:46:40,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569059996] [2024-09-20 18:46:40,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:40,098 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-20 18:46:40,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:40,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-20 18:46:40,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2024-09-20 18:46:40,099 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 19 states have internal predecessors, (52), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-20 18:46:40,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:40,184 INFO L93 Difference]: Finished difference Result 125 states and 127 transitions. [2024-09-20 18:46:40,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-20 18:46:40,184 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 19 states have internal predecessors, (52), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 109 [2024-09-20 18:46:40,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:40,185 INFO L225 Difference]: With dead ends: 125 [2024-09-20 18:46:40,185 INFO L226 Difference]: Without dead ends: 123 [2024-09-20 18:46:40,188 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 228 SyntacticMatches, 26 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2024-09-20 18:46:40,190 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:40,190 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 103 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:40,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-09-20 18:46:40,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2024-09-20 18:46:40,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 88 states have internal predecessors, (89), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-20 18:46:40,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2024-09-20 18:46:40,199 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 109 [2024-09-20 18:46:40,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:40,199 INFO L474 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2024-09-20 18:46:40,200 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 19 states have internal predecessors, (52), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-20 18:46:40,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:40,200 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2024-09-20 18:46:40,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-09-20 18:46:40,200 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:40,200 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:40,215 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-09-20 18:46:40,404 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-09-20 18:46:40,405 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:40,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:40,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1325191700, now seen corresponding path program 25 times [2024-09-20 18:46:40,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:40,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376356779] [2024-09-20 18:46:40,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:40,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-20 18:46:40,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-20 18:46:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-20 18:46:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 18:46:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 18:46:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 18:46:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 18:46:40,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 18:46:40,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 18:46:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-20 18:46:40,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 18:46:40,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 18:46:40,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 18:46:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,900 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 249 proven. 128 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-20 18:46:40,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:40,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376356779] [2024-09-20 18:46:40,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376356779] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:40,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302857989] [2024-09-20 18:46:40,900 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:46:40,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:40,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:40,902 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) [2024-09-20 18:46:40,903 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-09-20 18:46:40,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:40,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-20 18:46:40,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:41,370 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-20 18:46:41,371 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:41,641 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-20 18:46:41,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302857989] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:41,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:41,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 47 [2024-09-20 18:46:41,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952336745] [2024-09-20 18:46:41,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:41,642 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-09-20 18:46:41,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:41,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-09-20 18:46:41,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=500, Invalid=1662, Unknown=0, NotChecked=0, Total=2162 [2024-09-20 18:46:41,643 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand has 47 states, 47 states have (on average 1.7659574468085106) internal successors, (83), 47 states have internal predecessors, (83), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-20 18:46:41,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:41,761 INFO L93 Difference]: Finished difference Result 170 states and 185 transitions. [2024-09-20 18:46:41,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-20 18:46:41,761 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.7659574468085106) internal successors, (83), 47 states have internal predecessors, (83), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 116 [2024-09-20 18:46:41,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:41,763 INFO L225 Difference]: With dead ends: 170 [2024-09-20 18:46:41,763 INFO L226 Difference]: Without dead ends: 120 [2024-09-20 18:46:41,763 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 218 SyntacticMatches, 27 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1339 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=500, Invalid=1662, Unknown=0, NotChecked=0, Total=2162 [2024-09-20 18:46:41,764 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:41,764 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 229 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:41,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-09-20 18:46:41,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2024-09-20 18:46:41,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 89 states have internal predecessors, (90), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-20 18:46:41,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2024-09-20 18:46:41,771 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 116 [2024-09-20 18:46:41,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:41,771 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 121 transitions. [2024-09-20 18:46:41,771 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.7659574468085106) internal successors, (83), 47 states have internal predecessors, (83), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-20 18:46:41,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:41,771 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 121 transitions. [2024-09-20 18:46:41,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-09-20 18:46:41,772 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:41,772 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:41,783 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:41,976 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,27 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:41,976 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:41,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:41,977 INFO L85 PathProgramCache]: Analyzing trace with hash 358148856, now seen corresponding path program 26 times [2024-09-20 18:46:41,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:41,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936674226] [2024-09-20 18:46:41,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:41,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:42,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:42,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-20 18:46:42,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:42,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 18:46:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:42,216 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 18:46:42,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:42,217 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 18:46:42,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:42,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 18:46:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:42,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 18:46:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:42,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 18:46:42,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:42,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 18:46:42,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:42,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-20 18:46:42,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:42,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 18:46:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:42,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-20 18:46:42,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:42,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 18:46:42,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:42,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 18:46:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:42,228 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 117 proven. 274 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-20 18:46:42,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:42,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936674226] [2024-09-20 18:46:42,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936674226] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:42,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324998237] [2024-09-20 18:46:42,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:46:42,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:42,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:42,230 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) [2024-09-20 18:46:42,231 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-09-20 18:46:42,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:46:42,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:42,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-20 18:46:42,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:42,358 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 131 proven. 260 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-20 18:46:42,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:42,623 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 131 proven. 260 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-20 18:46:42,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324998237] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:42,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:42,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 22 [2024-09-20 18:46:42,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346779242] [2024-09-20 18:46:42,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:42,624 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-20 18:46:42,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:42,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-20 18:46:42,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2024-09-20 18:46:42,625 INFO L87 Difference]: Start difference. First operand 120 states and 121 transitions. Second operand has 22 states, 22 states have (on average 2.5) internal successors, (55), 20 states have internal predecessors, (55), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-20 18:46:42,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:42,709 INFO L93 Difference]: Finished difference Result 133 states and 135 transitions. [2024-09-20 18:46:42,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-20 18:46:42,710 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5) internal successors, (55), 20 states have internal predecessors, (55), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 117 [2024-09-20 18:46:42,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:42,711 INFO L225 Difference]: With dead ends: 133 [2024-09-20 18:46:42,711 INFO L226 Difference]: Without dead ends: 131 [2024-09-20 18:46:42,711 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 243 SyntacticMatches, 30 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2024-09-20 18:46:42,711 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:42,712 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 79 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:42,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-09-20 18:46:42,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2024-09-20 18:46:42,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 93 states have (on average 1.021505376344086) internal successors, (95), 94 states have internal predecessors, (95), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-20 18:46:42,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2024-09-20 18:46:42,718 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 117 [2024-09-20 18:46:42,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:42,718 INFO L474 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2024-09-20 18:46:42,719 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.5) internal successors, (55), 20 states have internal predecessors, (55), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-20 18:46:42,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:42,719 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2024-09-20 18:46:42,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-09-20 18:46:42,719 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:42,719 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:42,733 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:42,923 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-09-20 18:46:42,924 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:42,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:42,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1584219349, now seen corresponding path program 27 times [2024-09-20 18:46:42,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:42,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852441979] [2024-09-20 18:46:42,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:42,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:42,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-20 18:46:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 18:46:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 18:46:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 18:46:43,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 18:46:43,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 18:46:43,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 18:46:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 18:46:43,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-20 18:46:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 18:46:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-20 18:46:43,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 18:46:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 18:46:43,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 18:46:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,359 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 289 proven. 145 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-20 18:46:43,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:43,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852441979] [2024-09-20 18:46:43,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852441979] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:43,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254701405] [2024-09-20 18:46:43,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:46:43,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:43,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:43,361 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) [2024-09-20 18:46:43,362 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-09-20 18:46:43,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-09-20 18:46:43,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:43,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-20 18:46:43,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:43,850 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-20 18:46:43,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:44,214 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-20 18:46:44,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254701405] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:44,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:44,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 50 [2024-09-20 18:46:44,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261589740] [2024-09-20 18:46:44,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:44,215 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-09-20 18:46:44,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:44,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-09-20 18:46:44,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=1885, Unknown=0, NotChecked=0, Total=2450 [2024-09-20 18:46:44,216 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand has 50 states, 50 states have (on average 1.76) internal successors, (88), 50 states have internal predecessors, (88), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-20 18:46:44,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:44,400 INFO L93 Difference]: Finished difference Result 181 states and 197 transitions. [2024-09-20 18:46:44,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-20 18:46:44,400 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.76) internal successors, (88), 50 states have internal predecessors, (88), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 124 [2024-09-20 18:46:44,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:44,401 INFO L225 Difference]: With dead ends: 181 [2024-09-20 18:46:44,401 INFO L226 Difference]: Without dead ends: 128 [2024-09-20 18:46:44,402 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 233 SyntacticMatches, 29 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1526 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=565, Invalid=1885, Unknown=0, NotChecked=0, Total=2450 [2024-09-20 18:46:44,402 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:44,402 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 410 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:46:44,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-09-20 18:46:44,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-09-20 18:46:44,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 94 states have (on average 1.0212765957446808) internal successors, (96), 95 states have internal predecessors, (96), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-20 18:46:44,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2024-09-20 18:46:44,409 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 124 [2024-09-20 18:46:44,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:44,409 INFO L474 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2024-09-20 18:46:44,409 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.76) internal successors, (88), 50 states have internal predecessors, (88), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-20 18:46:44,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:44,410 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2024-09-20 18:46:44,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-09-20 18:46:44,410 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:44,410 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:44,422 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:44,614 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:44,614 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:44,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:44,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1511042103, now seen corresponding path program 28 times [2024-09-20 18:46:44,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:44,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744792207] [2024-09-20 18:46:44,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:44,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:44,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:44,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:44,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 18:46:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:44,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-20 18:46:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:44,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 18:46:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:44,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-20 18:46:44,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:44,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 18:46:44,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:44,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-20 18:46:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:44,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 18:46:44,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:44,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-20 18:46:44,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:44,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 18:46:44,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:44,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-20 18:46:44,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:44,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 18:46:44,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:44,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-20 18:46:44,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:44,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 18:46:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:44,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-20 18:46:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:44,892 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 133 proven. 316 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-20 18:46:44,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:44,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744792207] [2024-09-20 18:46:44,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744792207] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:44,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827618025] [2024-09-20 18:46:44,892 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:46:44,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:44,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:44,894 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) [2024-09-20 18:46:44,896 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-09-20 18:46:44,948 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:46:44,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:44,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-20 18:46:44,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:45,030 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 148 proven. 301 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-20 18:46:45,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:45,323 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 148 proven. 301 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-20 18:46:45,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827618025] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:45,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:45,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 23 [2024-09-20 18:46:45,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056928068] [2024-09-20 18:46:45,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:45,325 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-20 18:46:45,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:45,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-20 18:46:45,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2024-09-20 18:46:45,326 INFO L87 Difference]: Start difference. First operand 128 states and 129 transitions. Second operand has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 21 states have internal predecessors, (58), 16 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-20 18:46:45,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:45,429 INFO L93 Difference]: Finished difference Result 141 states and 143 transitions. [2024-09-20 18:46:45,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-20 18:46:45,429 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 21 states have internal predecessors, (58), 16 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 125 [2024-09-20 18:46:45,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:45,430 INFO L225 Difference]: With dead ends: 141 [2024-09-20 18:46:45,430 INFO L226 Difference]: Without dead ends: 139 [2024-09-20 18:46:45,431 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 260 SyntacticMatches, 32 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2024-09-20 18:46:45,432 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:45,432 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 87 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:45,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-09-20 18:46:45,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2024-09-20 18:46:45,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 99 states have (on average 1.02020202020202) internal successors, (101), 100 states have internal predecessors, (101), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-20 18:46:45,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2024-09-20 18:46:45,440 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 125 [2024-09-20 18:46:45,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:45,441 INFO L474 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2024-09-20 18:46:45,441 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 21 states have internal predecessors, (58), 16 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-20 18:46:45,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:45,441 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2024-09-20 18:46:45,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-09-20 18:46:45,445 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:45,446 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:45,458 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:45,646 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:45,647 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:45,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:45,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1144644876, now seen corresponding path program 29 times [2024-09-20 18:46:45,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:45,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722040732] [2024-09-20 18:46:45,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:45,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:46,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:46,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:46,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 18:46:46,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:46,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-20 18:46:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:46,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 18:46:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:46,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-20 18:46:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:46,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 18:46:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:46,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-20 18:46:46,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:46,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 18:46:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:46,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-20 18:46:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:46,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 18:46:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:46,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-20 18:46:46,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:46,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 18:46:46,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:46,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-20 18:46:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:46,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 18:46:46,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:46,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-20 18:46:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:46,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 18:46:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:46,117 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 332 proven. 163 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-20 18:46:46,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:46,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722040732] [2024-09-20 18:46:46,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722040732] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:46,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665412806] [2024-09-20 18:46:46,117 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:46:46,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:46,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:46,119 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) [2024-09-20 18:46:46,119 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-09-20 18:46:46,197 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-09-20 18:46:46,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:46,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-20 18:46:46,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:46,688 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-20 18:46:46,688 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:47,092 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-20 18:46:47,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665412806] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:47,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:47,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 53 [2024-09-20 18:46:47,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534979193] [2024-09-20 18:46:47,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:47,093 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-09-20 18:46:47,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:47,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-09-20 18:46:47,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=634, Invalid=2122, Unknown=0, NotChecked=0, Total=2756 [2024-09-20 18:46:47,094 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand has 53 states, 53 states have (on average 1.7547169811320755) internal successors, (93), 53 states have internal predecessors, (93), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-20 18:46:47,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:47,300 INFO L93 Difference]: Finished difference Result 192 states and 209 transitions. [2024-09-20 18:46:47,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-20 18:46:47,300 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.7547169811320755) internal successors, (93), 53 states have internal predecessors, (93), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 132 [2024-09-20 18:46:47,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:47,302 INFO L225 Difference]: With dead ends: 192 [2024-09-20 18:46:47,302 INFO L226 Difference]: Without dead ends: 136 [2024-09-20 18:46:47,303 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 248 SyntacticMatches, 31 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1725 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=634, Invalid=2122, Unknown=0, NotChecked=0, Total=2756 [2024-09-20 18:46:47,303 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:47,303 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 476 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:46:47,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-09-20 18:46:47,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-09-20 18:46:47,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 100 states have (on average 1.02) internal successors, (102), 101 states have internal predecessors, (102), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-20 18:46:47,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2024-09-20 18:46:47,311 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 132 [2024-09-20 18:46:47,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:47,311 INFO L474 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2024-09-20 18:46:47,311 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.7547169811320755) internal successors, (93), 53 states have internal predecessors, (93), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-20 18:46:47,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:47,311 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2024-09-20 18:46:47,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-09-20 18:46:47,312 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:47,312 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:47,325 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:47,516 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-09-20 18:46:47,517 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:47,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:47,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1888744936, now seen corresponding path program 30 times [2024-09-20 18:46:47,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:47,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442815451] [2024-09-20 18:46:47,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:47,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:47,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-20 18:46:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-20 18:46:47,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 18:46:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 18:46:47,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-20 18:46:47,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 18:46:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-20 18:46:47,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 18:46:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-20 18:46:47,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 18:46:47,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-20 18:46:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 18:46:47,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-20 18:46:47,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 18:46:47,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-20 18:46:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:47,807 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 150 proven. 361 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-20 18:46:47,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:47,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442815451] [2024-09-20 18:46:47,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442815451] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:47,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634633308] [2024-09-20 18:46:47,807 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:46:47,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:47,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:47,809 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) [2024-09-20 18:46:47,810 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-09-20 18:46:47,869 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2024-09-20 18:46:47,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:47,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-20 18:46:47,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:47,960 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 166 proven. 345 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-20 18:46:47,960 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:48,235 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 166 proven. 345 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-20 18:46:48,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634633308] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:48,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:48,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 24 [2024-09-20 18:46:48,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111615350] [2024-09-20 18:46:48,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:48,236 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-20 18:46:48,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:48,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-20 18:46:48,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=368, Unknown=0, NotChecked=0, Total=552 [2024-09-20 18:46:48,237 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 22 states have internal predecessors, (61), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-20 18:46:48,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:48,327 INFO L93 Difference]: Finished difference Result 149 states and 151 transitions. [2024-09-20 18:46:48,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-20 18:46:48,327 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 22 states have internal predecessors, (61), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 133 [2024-09-20 18:46:48,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:48,328 INFO L225 Difference]: With dead ends: 149 [2024-09-20 18:46:48,328 INFO L226 Difference]: Without dead ends: 147 [2024-09-20 18:46:48,329 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 279 SyntacticMatches, 32 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2024-09-20 18:46:48,329 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:48,329 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 74 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:48,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-09-20 18:46:48,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 143. [2024-09-20 18:46:48,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 105 states have (on average 1.019047619047619) internal successors, (107), 106 states have internal predecessors, (107), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-20 18:46:48,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2024-09-20 18:46:48,336 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 133 [2024-09-20 18:46:48,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:48,337 INFO L474 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2024-09-20 18:46:48,337 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 22 states have internal predecessors, (61), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-20 18:46:48,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:48,337 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2024-09-20 18:46:48,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-09-20 18:46:48,337 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:48,338 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:48,349 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-09-20 18:46:48,541 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:48,541 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:48,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:48,542 INFO L85 PathProgramCache]: Analyzing trace with hash 2092193803, now seen corresponding path program 31 times [2024-09-20 18:46:48,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:48,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498104543] [2024-09-20 18:46:48,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:48,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:48,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:49,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-20 18:46:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-20 18:46:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 18:46:49,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 18:46:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-20 18:46:49,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 18:46:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-20 18:46:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 18:46:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-20 18:46:49,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 18:46:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-20 18:46:49,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 18:46:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-20 18:46:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 18:46:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-20 18:46:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-20 18:46:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 378 proven. 182 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-20 18:46:49,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:49,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498104543] [2024-09-20 18:46:49,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498104543] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:49,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486963642] [2024-09-20 18:46:49,070 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:46:49,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:49,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:49,072 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) [2024-09-20 18:46:49,074 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-09-20 18:46:49,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:49,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-20 18:46:49,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:49,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-20 18:46:49,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:50,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-20 18:46:50,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486963642] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:50,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:50,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 56 [2024-09-20 18:46:50,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922513350] [2024-09-20 18:46:50,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:50,114 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-09-20 18:46:50,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:50,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-09-20 18:46:50,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=707, Invalid=2373, Unknown=0, NotChecked=0, Total=3080 [2024-09-20 18:46:50,119 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand has 56 states, 56 states have (on average 1.75) internal successors, (98), 56 states have internal predecessors, (98), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-20 18:46:50,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:50,334 INFO L93 Difference]: Finished difference Result 203 states and 221 transitions. [2024-09-20 18:46:50,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-20 18:46:50,335 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.75) internal successors, (98), 56 states have internal predecessors, (98), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 140 [2024-09-20 18:46:50,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:50,336 INFO L225 Difference]: With dead ends: 203 [2024-09-20 18:46:50,336 INFO L226 Difference]: Without dead ends: 144 [2024-09-20 18:46:50,337 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 263 SyntacticMatches, 33 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1936 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=707, Invalid=2373, Unknown=0, NotChecked=0, Total=3080 [2024-09-20 18:46:50,338 INFO L434 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:50,338 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 419 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:46:50,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-09-20 18:46:50,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-09-20 18:46:50,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 107 states have internal predecessors, (108), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-20 18:46:50,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2024-09-20 18:46:50,346 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 140 [2024-09-20 18:46:50,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:50,346 INFO L474 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2024-09-20 18:46:50,346 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.75) internal successors, (98), 56 states have internal predecessors, (98), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-20 18:46:50,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:50,346 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2024-09-20 18:46:50,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-09-20 18:46:50,347 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:50,347 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:50,359 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:50,547 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-09-20 18:46:50,547 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:50,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:50,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1294381335, now seen corresponding path program 32 times [2024-09-20 18:46:50,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:50,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215743725] [2024-09-20 18:46:50,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:50,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:50,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:50,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:50,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-20 18:46:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:50,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-20 18:46:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:50,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-20 18:46:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:50,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 18:46:50,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:50,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 18:46:50,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:50,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-20 18:46:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:50,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 18:46:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:50,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-20 18:46:50,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:50,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 18:46:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:50,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-20 18:46:50,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:50,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 18:46:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:50,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-20 18:46:50,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:50,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 18:46:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:50,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-20 18:46:50,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:50,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 18:46:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:50,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-20 18:46:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:50,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 168 proven. 409 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-20 18:46:50,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:50,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215743725] [2024-09-20 18:46:50,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215743725] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:50,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788486182] [2024-09-20 18:46:50,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:46:50,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:50,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:50,878 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) [2024-09-20 18:46:50,879 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-09-20 18:46:50,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:46:50,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:50,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-20 18:46:50,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:51,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 185 proven. 392 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-20 18:46:51,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:51,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 185 proven. 392 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-20 18:46:51,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788486182] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:51,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:51,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 25 [2024-09-20 18:46:51,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938733026] [2024-09-20 18:46:51,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:51,377 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-20 18:46:51,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:51,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-20 18:46:51,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=397, Unknown=0, NotChecked=0, Total=600 [2024-09-20 18:46:51,377 INFO L87 Difference]: Start difference. First operand 144 states and 145 transitions. Second operand has 25 states, 25 states have (on average 2.56) internal successors, (64), 23 states have internal predecessors, (64), 18 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-20 18:46:51,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:51,475 INFO L93 Difference]: Finished difference Result 157 states and 159 transitions. [2024-09-20 18:46:51,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-20 18:46:51,475 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.56) internal successors, (64), 23 states have internal predecessors, (64), 18 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 141 [2024-09-20 18:46:51,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:51,476 INFO L225 Difference]: With dead ends: 157 [2024-09-20 18:46:51,476 INFO L226 Difference]: Without dead ends: 155 [2024-09-20 18:46:51,477 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 294 SyntacticMatches, 36 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=209, Invalid=441, Unknown=0, NotChecked=0, Total=650 [2024-09-20 18:46:51,477 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:51,477 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 68 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:51,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-09-20 18:46:51,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2024-09-20 18:46:51,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 111 states have (on average 1.018018018018018) internal successors, (113), 112 states have internal predecessors, (113), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-20 18:46:51,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2024-09-20 18:46:51,485 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 141 [2024-09-20 18:46:51,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:51,485 INFO L474 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2024-09-20 18:46:51,485 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.56) internal successors, (64), 23 states have internal predecessors, (64), 18 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-20 18:46:51,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:51,486 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2024-09-20 18:46:51,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-09-20 18:46:51,486 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:51,486 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:51,498 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:51,687 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-09-20 18:46:51,687 INFO L399 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:51,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:51,688 INFO L85 PathProgramCache]: Analyzing trace with hash 907977772, now seen corresponding path program 33 times [2024-09-20 18:46:51,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:51,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746547158] [2024-09-20 18:46:51,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:51,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-20 18:46:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-20 18:46:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-20 18:46:52,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 18:46:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 18:46:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-20 18:46:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 18:46:52,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-20 18:46:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 18:46:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-20 18:46:52,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 18:46:52,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-20 18:46:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 18:46:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-20 18:46:52,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 18:46:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-20 18:46:52,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-20 18:46:52,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:52,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 427 proven. 202 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-20 18:46:52,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:52,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746547158] [2024-09-20 18:46:52,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746547158] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:52,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380933864] [2024-09-20 18:46:52,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:46:52,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:52,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:52,331 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) [2024-09-20 18:46:52,332 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-09-20 18:46:52,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-09-20 18:46:52,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:52,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-20 18:46:52,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:52,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-20 18:46:52,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:53,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-20 18:46:53,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380933864] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:53,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:53,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 59 [2024-09-20 18:46:53,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846346554] [2024-09-20 18:46:53,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:53,328 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-09-20 18:46:53,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:53,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-09-20 18:46:53,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=784, Invalid=2638, Unknown=0, NotChecked=0, Total=3422 [2024-09-20 18:46:53,330 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand has 59 states, 59 states have (on average 1.7457627118644068) internal successors, (103), 59 states have internal predecessors, (103), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-20 18:46:53,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:53,525 INFO L93 Difference]: Finished difference Result 214 states and 233 transitions. [2024-09-20 18:46:53,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-20 18:46:53,525 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.7457627118644068) internal successors, (103), 59 states have internal predecessors, (103), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 148 [2024-09-20 18:46:53,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:53,526 INFO L225 Difference]: With dead ends: 214 [2024-09-20 18:46:53,527 INFO L226 Difference]: Without dead ends: 152 [2024-09-20 18:46:53,527 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 278 SyntacticMatches, 35 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2159 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=784, Invalid=2638, Unknown=0, NotChecked=0, Total=3422 [2024-09-20 18:46:53,528 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:53,528 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 234 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:46:53,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-09-20 18:46:53,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2024-09-20 18:46:53,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 112 states have (on average 1.0178571428571428) internal successors, (114), 113 states have internal predecessors, (114), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-20 18:46:53,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 153 transitions. [2024-09-20 18:46:53,536 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 153 transitions. Word has length 148 [2024-09-20 18:46:53,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:53,536 INFO L474 AbstractCegarLoop]: Abstraction has 152 states and 153 transitions. [2024-09-20 18:46:53,536 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.7457627118644068) internal successors, (103), 59 states have internal predecessors, (103), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-20 18:46:53,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:53,536 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 153 transitions. [2024-09-20 18:46:53,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-09-20 18:46:53,537 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:53,537 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:53,553 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:53,741 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-09-20 18:46:53,742 INFO L399 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:53,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:53,742 INFO L85 PathProgramCache]: Analyzing trace with hash 844968248, now seen corresponding path program 34 times [2024-09-20 18:46:53,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:53,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64327264] [2024-09-20 18:46:53,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:53,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-20 18:46:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-20 18:46:54,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 18:46:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-20 18:46:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-20 18:46:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 18:46:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 18:46:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 18:46:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-20 18:46:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 18:46:54,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-20 18:46:54,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 18:46:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-20 18:46:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 18:46:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-20 18:46:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 18:46:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-20 18:46:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:54,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 187 proven. 460 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-20 18:46:54,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:54,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64327264] [2024-09-20 18:46:54,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64327264] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:54,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100896033] [2024-09-20 18:46:54,088 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:46:54,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:54,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:54,089 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) [2024-09-20 18:46:54,090 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-09-20 18:46:54,151 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:46:54,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:54,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-20 18:46:54,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:54,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 205 proven. 442 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-20 18:46:54,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:54,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 205 proven. 442 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-20 18:46:54,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100896033] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:54,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:54,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 26 [2024-09-20 18:46:54,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830970042] [2024-09-20 18:46:54,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:54,607 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-20 18:46:54,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:54,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-20 18:46:54,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=427, Unknown=0, NotChecked=0, Total=650 [2024-09-20 18:46:54,608 INFO L87 Difference]: Start difference. First operand 152 states and 153 transitions. Second operand has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 24 states have internal predecessors, (67), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-20 18:46:54,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:54,716 INFO L93 Difference]: Finished difference Result 165 states and 167 transitions. [2024-09-20 18:46:54,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-20 18:46:54,717 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 24 states have internal predecessors, (67), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 149 [2024-09-20 18:46:54,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:54,718 INFO L225 Difference]: With dead ends: 165 [2024-09-20 18:46:54,718 INFO L226 Difference]: Without dead ends: 163 [2024-09-20 18:46:54,718 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 313 SyntacticMatches, 36 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=229, Invalid=473, Unknown=0, NotChecked=0, Total=702 [2024-09-20 18:46:54,719 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:54,719 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 86 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:54,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-09-20 18:46:54,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2024-09-20 18:46:54,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 117 states have (on average 1.017094017094017) internal successors, (119), 118 states have internal predecessors, (119), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-20 18:46:54,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2024-09-20 18:46:54,727 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 149 [2024-09-20 18:46:54,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:54,727 INFO L474 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2024-09-20 18:46:54,727 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 24 states have internal predecessors, (67), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-20 18:46:54,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:54,728 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2024-09-20 18:46:54,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-09-20 18:46:54,728 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:54,728 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:54,741 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-09-20 18:46:54,933 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-09-20 18:46:54,933 INFO L399 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:54,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:54,933 INFO L85 PathProgramCache]: Analyzing trace with hash 580840683, now seen corresponding path program 35 times [2024-09-20 18:46:54,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:54,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494154171] [2024-09-20 18:46:54,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:54,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:55,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:55,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:55,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-20 18:46:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:55,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-20 18:46:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:55,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 18:46:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:55,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-20 18:46:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:55,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-20 18:46:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:55,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 18:46:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:55,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 18:46:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:55,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 18:46:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:55,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-20 18:46:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:55,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 18:46:55,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:55,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-20 18:46:55,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:55,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 18:46:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:55,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-20 18:46:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:55,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 18:46:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:55,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-20 18:46:55,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:55,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 18:46:55,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:55,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-20 18:46:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:55,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-20 18:46:55,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:55,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 479 proven. 223 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-20 18:46:55,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:55,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494154171] [2024-09-20 18:46:55,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494154171] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:55,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112249906] [2024-09-20 18:46:55,567 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:46:55,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:55,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:55,569 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) [2024-09-20 18:46:55,570 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-09-20 18:46:55,638 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2024-09-20 18:46:55,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:55,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-20 18:46:55,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:56,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-20 18:46:56,238 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:56,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-20 18:46:56,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112249906] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:56,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:56,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 62 [2024-09-20 18:46:56,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360339042] [2024-09-20 18:46:56,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:56,669 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-09-20 18:46:56,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:56,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-09-20 18:46:56,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=865, Invalid=2917, Unknown=0, NotChecked=0, Total=3782 [2024-09-20 18:46:56,673 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand has 62 states, 62 states have (on average 1.7419354838709677) internal successors, (108), 62 states have internal predecessors, (108), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-20 18:46:56,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:56,904 INFO L93 Difference]: Finished difference Result 225 states and 245 transitions. [2024-09-20 18:46:56,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-20 18:46:56,904 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.7419354838709677) internal successors, (108), 62 states have internal predecessors, (108), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 156 [2024-09-20 18:46:56,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:56,905 INFO L225 Difference]: With dead ends: 225 [2024-09-20 18:46:56,905 INFO L226 Difference]: Without dead ends: 160 [2024-09-20 18:46:56,906 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 293 SyntacticMatches, 37 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2394 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=865, Invalid=2917, Unknown=0, NotChecked=0, Total=3782 [2024-09-20 18:46:56,906 INFO L434 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:56,907 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 282 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:46:56,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-09-20 18:46:56,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2024-09-20 18:46:56,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 118 states have (on average 1.0169491525423728) internal successors, (120), 119 states have internal predecessors, (120), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-20 18:46:56,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 161 transitions. [2024-09-20 18:46:56,915 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 161 transitions. Word has length 156 [2024-09-20 18:46:56,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:56,915 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 161 transitions. [2024-09-20 18:46:56,915 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.7419354838709677) internal successors, (108), 62 states have internal predecessors, (108), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-20 18:46:56,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:56,916 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 161 transitions. [2024-09-20 18:46:56,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-09-20 18:46:56,916 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:56,916 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:56,929 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:57,120 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-09-20 18:46:57,121 INFO L399 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:57,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:57,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1523208713, now seen corresponding path program 36 times [2024-09-20 18:46:57,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:57,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788264388] [2024-09-20 18:46:57,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:57,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:57,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 18:46:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 18:46:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 18:46:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-20 18:46:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 18:46:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 18:46:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 18:46:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 18:46:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:46:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 18:46:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 18:46:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-20 18:46:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 18:46:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-20 18:46:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 18:46:57,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-20 18:46:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 18:46:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-20 18:46:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:57,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 207 proven. 514 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-20 18:46:57,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:57,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788264388] [2024-09-20 18:46:57,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788264388] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:57,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381102025] [2024-09-20 18:46:57,444 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:46:57,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:57,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:57,446 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:57,447 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-09-20 18:46:57,522 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-09-20 18:46:57,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:57,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-20 18:46:57,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:57,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 226 proven. 495 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-20 18:46:57,601 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:57,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 226 proven. 495 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-20 18:46:57,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381102025] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:57,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:57,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 27 [2024-09-20 18:46:57,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028323950] [2024-09-20 18:46:57,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:57,892 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-20 18:46:57,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:57,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-20 18:46:57,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=458, Unknown=0, NotChecked=0, Total=702 [2024-09-20 18:46:57,893 INFO L87 Difference]: Start difference. First operand 160 states and 161 transitions. Second operand has 27 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 25 states have internal predecessors, (70), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-20 18:46:57,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:57,977 INFO L93 Difference]: Finished difference Result 173 states and 175 transitions. [2024-09-20 18:46:57,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-20 18:46:57,977 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 25 states have internal predecessors, (70), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 157 [2024-09-20 18:46:57,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:57,979 INFO L225 Difference]: With dead ends: 173 [2024-09-20 18:46:57,979 INFO L226 Difference]: Without dead ends: 171 [2024-09-20 18:46:57,979 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 330 SyntacticMatches, 38 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=250, Invalid=506, Unknown=0, NotChecked=0, Total=756 [2024-09-20 18:46:57,979 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:57,980 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 70 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:57,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-09-20 18:46:57,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2024-09-20 18:46:57,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 123 states have (on average 1.016260162601626) internal successors, (125), 124 states have internal predecessors, (125), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-20 18:46:57,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2024-09-20 18:46:57,988 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 157 [2024-09-20 18:46:57,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:57,988 INFO L474 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2024-09-20 18:46:57,989 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 25 states have internal predecessors, (70), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-20 18:46:57,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:57,989 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2024-09-20 18:46:57,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-09-20 18:46:57,989 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:57,989 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:58,002 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:58,193 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-09-20 18:46:58,193 INFO L399 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:58,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:58,194 INFO L85 PathProgramCache]: Analyzing trace with hash -545035444, now seen corresponding path program 37 times [2024-09-20 18:46:58,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:58,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717357891] [2024-09-20 18:46:58,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:58,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:58,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:58,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 18:46:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:58,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 18:46:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:58,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 18:46:58,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:58,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-20 18:46:58,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:58,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 18:46:58,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:58,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 18:46:58,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:58,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 18:46:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:58,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 18:46:58,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:58,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:46:58,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:58,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 18:46:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:58,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 18:46:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:58,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-20 18:46:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:58,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 18:46:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:58,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-20 18:46:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:58,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 18:46:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:58,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-20 18:46:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:58,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 18:46:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:58,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-20 18:46:58,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:58,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 18:46:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:58,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 534 proven. 245 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-20 18:46:58,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:58,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717357891] [2024-09-20 18:46:58,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717357891] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:58,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581413248] [2024-09-20 18:46:58,751 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:46:58,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:58,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:58,753 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:58,754 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-09-20 18:46:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:58,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-20 18:46:58,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:59,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-20 18:46:59,353 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:59,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-20 18:46:59,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581413248] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:59,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:59,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 65 [2024-09-20 18:46:59,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220899104] [2024-09-20 18:46:59,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:59,803 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-09-20 18:46:59,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:59,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-09-20 18:46:59,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=950, Invalid=3210, Unknown=0, NotChecked=0, Total=4160 [2024-09-20 18:46:59,804 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand has 65 states, 65 states have (on average 1.7384615384615385) internal successors, (113), 65 states have internal predecessors, (113), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-20 18:47:00,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:00,027 INFO L93 Difference]: Finished difference Result 236 states and 257 transitions. [2024-09-20 18:47:00,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-20 18:47:00,031 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.7384615384615385) internal successors, (113), 65 states have internal predecessors, (113), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 164 [2024-09-20 18:47:00,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:00,032 INFO L225 Difference]: With dead ends: 236 [2024-09-20 18:47:00,032 INFO L226 Difference]: Without dead ends: 168 [2024-09-20 18:47:00,033 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 308 SyntacticMatches, 39 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2641 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=950, Invalid=3210, Unknown=0, NotChecked=0, Total=4160 [2024-09-20 18:47:00,036 INFO L434 NwaCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:00,036 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 376 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:47:00,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-09-20 18:47:00,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-09-20 18:47:00,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 124 states have (on average 1.0161290322580645) internal successors, (126), 125 states have internal predecessors, (126), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-20 18:47:00,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 169 transitions. [2024-09-20 18:47:00,045 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 169 transitions. Word has length 164 [2024-09-20 18:47:00,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:00,046 INFO L474 AbstractCegarLoop]: Abstraction has 168 states and 169 transitions. [2024-09-20 18:47:00,046 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.7384615384615385) internal successors, (113), 65 states have internal predecessors, (113), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-20 18:47:00,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:00,046 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 169 transitions. [2024-09-20 18:47:00,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-09-20 18:47:00,047 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:00,047 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:00,059 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-09-20 18:47:00,248 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-09-20 18:47:00,248 INFO L399 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:00,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:00,249 INFO L85 PathProgramCache]: Analyzing trace with hash -151101352, now seen corresponding path program 38 times [2024-09-20 18:47:00,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:00,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344493828] [2024-09-20 18:47:00,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:00,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:00,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:00,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:00,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:00,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-20 18:47:00,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:00,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-20 18:47:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:00,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 18:47:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:00,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 18:47:00,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:00,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 18:47:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:00,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 18:47:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:00,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 18:47:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:00,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 18:47:00,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:00,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-20 18:47:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:00,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 18:47:00,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:00,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 18:47:00,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:00,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 18:47:00,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:00,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-20 18:47:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:00,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 18:47:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:00,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-20 18:47:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:00,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 18:47:00,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:00,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-20 18:47:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:00,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 18:47:00,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:00,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-20 18:47:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:00,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 228 proven. 571 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-20 18:47:00,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:00,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344493828] [2024-09-20 18:47:00,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344493828] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:00,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157898926] [2024-09-20 18:47:00,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:47:00,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:00,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:00,624 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:00,628 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-09-20 18:47:00,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:47:00,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:00,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-20 18:47:00,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:00,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 248 proven. 551 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-20 18:47:00,802 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:01,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 248 proven. 551 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-20 18:47:01,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157898926] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:01,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:01,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 28 [2024-09-20 18:47:01,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426542827] [2024-09-20 18:47:01,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:01,164 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-20 18:47:01,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:01,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-20 18:47:01,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=490, Unknown=0, NotChecked=0, Total=756 [2024-09-20 18:47:01,165 INFO L87 Difference]: Start difference. First operand 168 states and 169 transitions. Second operand has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 26 states have internal predecessors, (73), 21 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-20 18:47:01,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:01,273 INFO L93 Difference]: Finished difference Result 181 states and 183 transitions. [2024-09-20 18:47:01,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-20 18:47:01,273 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 26 states have internal predecessors, (73), 21 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 165 [2024-09-20 18:47:01,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:01,275 INFO L225 Difference]: With dead ends: 181 [2024-09-20 18:47:01,275 INFO L226 Difference]: Without dead ends: 179 [2024-09-20 18:47:01,275 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 345 SyntacticMatches, 42 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=272, Invalid=540, Unknown=0, NotChecked=0, Total=812 [2024-09-20 18:47:01,275 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:01,275 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 85 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:47:01,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-09-20 18:47:01,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 175. [2024-09-20 18:47:01,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 129 states have (on average 1.0155038759689923) internal successors, (131), 130 states have internal predecessors, (131), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-20 18:47:01,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2024-09-20 18:47:01,285 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 165 [2024-09-20 18:47:01,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:01,286 INFO L474 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2024-09-20 18:47:01,286 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 26 states have internal predecessors, (73), 21 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-20 18:47:01,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:01,286 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2024-09-20 18:47:01,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-09-20 18:47:01,287 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:01,287 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:01,300 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-09-20 18:47:01,490 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:01,491 INFO L399 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:01,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:01,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1782610379, now seen corresponding path program 39 times [2024-09-20 18:47:01,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:01,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392150985] [2024-09-20 18:47:01,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:01,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-20 18:47:02,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-20 18:47:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 18:47:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 18:47:02,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 18:47:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 18:47:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 18:47:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 18:47:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-20 18:47:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 18:47:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 18:47:02,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 18:47:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-20 18:47:02,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 18:47:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-20 18:47:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 18:47:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-20 18:47:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 18:47:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-20 18:47:02,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-20 18:47:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:02,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 592 proven. 268 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-20 18:47:02,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:02,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392150985] [2024-09-20 18:47:02,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392150985] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:02,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456360318] [2024-09-20 18:47:02,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:47:02,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:02,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:02,204 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:02,205 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-09-20 18:47:02,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2024-09-20 18:47:02,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:02,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-20 18:47:02,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:03,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-20 18:47:03,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:03,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-20 18:47:03,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456360318] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:03,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:03,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 68 [2024-09-20 18:47:03,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057615001] [2024-09-20 18:47:03,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:03,639 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-09-20 18:47:03,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:03,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-09-20 18:47:03,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1039, Invalid=3517, Unknown=0, NotChecked=0, Total=4556 [2024-09-20 18:47:03,640 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand has 68 states, 68 states have (on average 1.7352941176470589) internal successors, (118), 68 states have internal predecessors, (118), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-20 18:47:03,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:03,878 INFO L93 Difference]: Finished difference Result 247 states and 269 transitions. [2024-09-20 18:47:03,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-20 18:47:03,878 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.7352941176470589) internal successors, (118), 68 states have internal predecessors, (118), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 172 [2024-09-20 18:47:03,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:03,880 INFO L225 Difference]: With dead ends: 247 [2024-09-20 18:47:03,880 INFO L226 Difference]: Without dead ends: 176 [2024-09-20 18:47:03,880 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 323 SyntacticMatches, 41 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2900 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1039, Invalid=3517, Unknown=0, NotChecked=0, Total=4556 [2024-09-20 18:47:03,880 INFO L434 NwaCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:03,881 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 355 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:47:03,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-09-20 18:47:03,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-09-20 18:47:03,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 130 states have (on average 1.0153846153846153) internal successors, (132), 131 states have internal predecessors, (132), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-20 18:47:03,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 177 transitions. [2024-09-20 18:47:03,891 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 177 transitions. Word has length 172 [2024-09-20 18:47:03,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:03,891 INFO L474 AbstractCegarLoop]: Abstraction has 176 states and 177 transitions. [2024-09-20 18:47:03,891 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.7352941176470589) internal successors, (118), 68 states have internal predecessors, (118), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-20 18:47:03,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:03,891 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 177 transitions. [2024-09-20 18:47:03,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-09-20 18:47:03,892 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:03,892 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:03,904 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-09-20 18:47:04,096 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-09-20 18:47:04,097 INFO L399 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:04,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:04,097 INFO L85 PathProgramCache]: Analyzing trace with hash -651451689, now seen corresponding path program 40 times [2024-09-20 18:47:04,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:04,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264698175] [2024-09-20 18:47:04,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:04,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 18:47:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 18:47:04,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 18:47:04,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 18:47:04,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 18:47:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 18:47:04,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 18:47:04,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-20 18:47:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 18:47:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-20 18:47:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 18:47:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 18:47:04,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 18:47:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-20 18:47:04,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-20 18:47:04,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-20 18:47:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-20 18:47:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-20 18:47:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-20 18:47:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-20 18:47:04,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 250 proven. 631 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-20 18:47:04,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:04,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264698175] [2024-09-20 18:47:04,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264698175] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:04,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654603555] [2024-09-20 18:47:04,536 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:47:04,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:04,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:04,538 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:04,539 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-09-20 18:47:04,603 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:47:04,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:04,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-20 18:47:04,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:04,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 271 proven. 610 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-20 18:47:04,727 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:05,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 271 proven. 610 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-20 18:47:05,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654603555] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:05,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:05,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 29 [2024-09-20 18:47:05,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465466979] [2024-09-20 18:47:05,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:05,167 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-20 18:47:05,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:05,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-20 18:47:05,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=523, Unknown=0, NotChecked=0, Total=812 [2024-09-20 18:47:05,168 INFO L87 Difference]: Start difference. First operand 176 states and 177 transitions. Second operand has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 27 states have internal predecessors, (76), 22 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-20 18:47:05,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:05,301 INFO L93 Difference]: Finished difference Result 189 states and 191 transitions. [2024-09-20 18:47:05,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-20 18:47:05,302 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 27 states have internal predecessors, (76), 22 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 173 [2024-09-20 18:47:05,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:05,303 INFO L225 Difference]: With dead ends: 189 [2024-09-20 18:47:05,303 INFO L226 Difference]: Without dead ends: 187 [2024-09-20 18:47:05,303 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 364 SyntacticMatches, 42 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=295, Invalid=575, Unknown=0, NotChecked=0, Total=870 [2024-09-20 18:47:05,304 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:05,304 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 121 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:47:05,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-09-20 18:47:05,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2024-09-20 18:47:05,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 135 states have (on average 1.0148148148148148) internal successors, (137), 136 states have internal predecessors, (137), 24 states have call successors, (24), 24 states have call predecessors, (24), 23 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-20 18:47:05,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2024-09-20 18:47:05,314 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 173 [2024-09-20 18:47:05,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:05,314 INFO L474 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2024-09-20 18:47:05,314 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 27 states have internal predecessors, (76), 22 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-20 18:47:05,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:05,314 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2024-09-20 18:47:05,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-09-20 18:47:05,315 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:05,315 INFO L216 NwaCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:05,329 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2024-09-20 18:47:05,516 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,42 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:05,517 INFO L399 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:05,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:05,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1044759956, now seen corresponding path program 41 times [2024-09-20 18:47:05,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:05,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222375324] [2024-09-20 18:47:05,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:05,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:06,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:06,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:06,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 18:47:06,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:06,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 18:47:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:06,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 18:47:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:06,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 18:47:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:06,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 18:47:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:06,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 18:47:06,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:06,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 18:47:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:06,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-20 18:47:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:06,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 18:47:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:06,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-20 18:47:06,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:06,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 18:47:06,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:06,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 18:47:06,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:06,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 18:47:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:06,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-20 18:47:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:06,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-20 18:47:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:06,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-20 18:47:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:06,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-20 18:47:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:06,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-20 18:47:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:06,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-20 18:47:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:06,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-20 18:47:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:06,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-20 18:47:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:06,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 653 proven. 292 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-20 18:47:06,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:06,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222375324] [2024-09-20 18:47:06,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222375324] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:06,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909358193] [2024-09-20 18:47:06,313 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:47:06,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:06,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:06,316 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:06,316 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-09-20 18:47:06,390 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-09-20 18:47:06,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:06,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-20 18:47:06,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:07,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-20 18:47:07,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:07,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-20 18:47:07,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909358193] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:07,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:07,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 71 [2024-09-20 18:47:07,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567647383] [2024-09-20 18:47:07,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:07,833 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-09-20 18:47:07,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:07,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-09-20 18:47:07,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1132, Invalid=3838, Unknown=0, NotChecked=0, Total=4970 [2024-09-20 18:47:07,835 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand has 71 states, 71 states have (on average 1.732394366197183) internal successors, (123), 71 states have internal predecessors, (123), 45 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-20 18:47:08,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:08,096 INFO L93 Difference]: Finished difference Result 258 states and 281 transitions. [2024-09-20 18:47:08,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-20 18:47:08,097 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.732394366197183) internal successors, (123), 71 states have internal predecessors, (123), 45 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 180 [2024-09-20 18:47:08,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:08,098 INFO L225 Difference]: With dead ends: 258 [2024-09-20 18:47:08,098 INFO L226 Difference]: Without dead ends: 184 [2024-09-20 18:47:08,099 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 338 SyntacticMatches, 43 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3171 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1132, Invalid=3838, Unknown=0, NotChecked=0, Total=4970 [2024-09-20 18:47:08,099 INFO L434 NwaCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:08,099 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 456 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:47:08,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-09-20 18:47:08,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2024-09-20 18:47:08,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 136 states have (on average 1.0147058823529411) internal successors, (138), 137 states have internal predecessors, (138), 24 states have call successors, (24), 24 states have call predecessors, (24), 23 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-20 18:47:08,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 185 transitions. [2024-09-20 18:47:08,109 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 185 transitions. Word has length 180 [2024-09-20 18:47:08,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:08,109 INFO L474 AbstractCegarLoop]: Abstraction has 184 states and 185 transitions. [2024-09-20 18:47:08,109 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.732394366197183) internal successors, (123), 71 states have internal predecessors, (123), 45 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-20 18:47:08,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:08,110 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 185 transitions. [2024-09-20 18:47:08,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-09-20 18:47:08,110 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:08,110 INFO L216 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:08,125 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-09-20 18:47:08,311 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:08,311 INFO L399 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:08,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:08,312 INFO L85 PathProgramCache]: Analyzing trace with hash -22964360, now seen corresponding path program 42 times [2024-09-20 18:47:08,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:08,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122621588] [2024-09-20 18:47:08,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:08,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:08,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:08,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:08,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-20 18:47:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:08,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 18:47:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:08,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-20 18:47:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:08,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 18:47:08,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:08,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-20 18:47:08,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:08,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 18:47:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:08,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-20 18:47:08,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:08,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 18:47:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:08,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-20 18:47:08,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:08,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 18:47:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:08,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-20 18:47:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:08,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 18:47:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:08,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-20 18:47:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:08,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 18:47:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:08,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-20 18:47:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:08,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-20 18:47:08,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:08,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-20 18:47:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:08,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-20 18:47:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:08,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-20 18:47:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:08,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-20 18:47:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:08,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-20 18:47:08,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:08,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 273 proven. 694 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-20 18:47:08,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:08,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122621588] [2024-09-20 18:47:08,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122621588] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:08,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558468069] [2024-09-20 18:47:08,778 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:47:08,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:08,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:08,779 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:08,780 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-09-20 18:47:08,891 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2024-09-20 18:47:08,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:08,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-20 18:47:08,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:09,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 295 proven. 672 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-20 18:47:09,012 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:09,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 295 proven. 672 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-20 18:47:09,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558468069] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:09,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:09,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 30 [2024-09-20 18:47:09,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720258005] [2024-09-20 18:47:09,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:09,487 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-20 18:47:09,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:09,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-20 18:47:09,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=557, Unknown=0, NotChecked=0, Total=870 [2024-09-20 18:47:09,488 INFO L87 Difference]: Start difference. First operand 184 states and 185 transitions. Second operand has 30 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 28 states have internal predecessors, (79), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-20 18:47:09,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:09,620 INFO L93 Difference]: Finished difference Result 197 states and 199 transitions. [2024-09-20 18:47:09,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-20 18:47:09,620 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 28 states have internal predecessors, (79), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 181 [2024-09-20 18:47:09,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:09,621 INFO L225 Difference]: With dead ends: 197 [2024-09-20 18:47:09,622 INFO L226 Difference]: Without dead ends: 195 [2024-09-20 18:47:09,622 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 381 SyntacticMatches, 44 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=319, Invalid=611, Unknown=0, NotChecked=0, Total=930 [2024-09-20 18:47:09,622 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:09,622 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 91 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:47:09,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-09-20 18:47:09,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 191. [2024-09-20 18:47:09,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 141 states have (on average 1.0141843971631206) internal successors, (143), 142 states have internal predecessors, (143), 25 states have call successors, (25), 25 states have call predecessors, (25), 24 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-20 18:47:09,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2024-09-20 18:47:09,632 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 181 [2024-09-20 18:47:09,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:09,633 INFO L474 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2024-09-20 18:47:09,633 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 28 states have internal predecessors, (79), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-20 18:47:09,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:09,633 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2024-09-20 18:47:09,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-09-20 18:47:09,634 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:09,634 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:09,647 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-09-20 18:47:09,834 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-09-20 18:47:09,835 INFO L399 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:09,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:09,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1913061035, now seen corresponding path program 43 times [2024-09-20 18:47:09,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:09,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528244516] [2024-09-20 18:47:09,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:09,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:09,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-20 18:47:10,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 18:47:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-20 18:47:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 18:47:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-20 18:47:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 18:47:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-20 18:47:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 18:47:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-20 18:47:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 18:47:10,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-20 18:47:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 18:47:10,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-20 18:47:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 18:47:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-20 18:47:10,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-20 18:47:10,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-20 18:47:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-20 18:47:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-20 18:47:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-20 18:47:10,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-20 18:47:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-20 18:47:10,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 717 proven. 317 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-20 18:47:10,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:10,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528244516] [2024-09-20 18:47:10,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528244516] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:10,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113167905] [2024-09-20 18:47:10,673 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:47:10,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:10,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:10,675 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:10,676 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-09-20 18:47:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:10,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-20 18:47:10,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:11,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-20 18:47:11,538 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:12,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-20 18:47:12,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113167905] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:12,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:12,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 74 [2024-09-20 18:47:12,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334816855] [2024-09-20 18:47:12,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:12,091 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-09-20 18:47:12,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:12,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-09-20 18:47:12,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1229, Invalid=4173, Unknown=0, NotChecked=0, Total=5402 [2024-09-20 18:47:12,092 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand has 74 states, 74 states have (on average 1.7297297297297298) internal successors, (128), 74 states have internal predecessors, (128), 47 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-20 18:47:12,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:12,377 INFO L93 Difference]: Finished difference Result 269 states and 293 transitions. [2024-09-20 18:47:12,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-09-20 18:47:12,378 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.7297297297297298) internal successors, (128), 74 states have internal predecessors, (128), 47 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 188 [2024-09-20 18:47:12,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:12,379 INFO L225 Difference]: With dead ends: 269 [2024-09-20 18:47:12,379 INFO L226 Difference]: Without dead ends: 192 [2024-09-20 18:47:12,380 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 353 SyntacticMatches, 45 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3454 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1229, Invalid=4173, Unknown=0, NotChecked=0, Total=5402 [2024-09-20 18:47:12,380 INFO L434 NwaCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:12,380 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 494 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:47:12,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-09-20 18:47:12,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2024-09-20 18:47:12,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 142 states have (on average 1.0140845070422535) internal successors, (144), 143 states have internal predecessors, (144), 25 states have call successors, (25), 25 states have call predecessors, (25), 24 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-20 18:47:12,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 193 transitions. [2024-09-20 18:47:12,391 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 193 transitions. Word has length 188 [2024-09-20 18:47:12,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:12,391 INFO L474 AbstractCegarLoop]: Abstraction has 192 states and 193 transitions. [2024-09-20 18:47:12,391 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.7297297297297298) internal successors, (128), 74 states have internal predecessors, (128), 47 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-20 18:47:12,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:12,392 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 193 transitions. [2024-09-20 18:47:12,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-09-20 18:47:12,392 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:12,392 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:12,405 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-09-20 18:47:12,596 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-09-20 18:47:12,596 INFO L399 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:12,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:12,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1485402185, now seen corresponding path program 44 times [2024-09-20 18:47:12,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:12,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699650964] [2024-09-20 18:47:12,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:12,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-20 18:47:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 18:47:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 18:47:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-20 18:47:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 18:47:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-20 18:47:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 18:47:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-20 18:47:13,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 18:47:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-20 18:47:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 18:47:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-20 18:47:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 18:47:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-20 18:47:13,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-20 18:47:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-20 18:47:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-20 18:47:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-20 18:47:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-20 18:47:13,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-20 18:47:13,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-20 18:47:13,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-20 18:47:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:13,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 297 proven. 760 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-20 18:47:13,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:13,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699650964] [2024-09-20 18:47:13,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699650964] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:13,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571574503] [2024-09-20 18:47:13,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:47:13,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:13,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:13,089 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:13,093 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-09-20 18:47:13,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:47:13,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:13,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-09-20 18:47:13,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:13,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 320 proven. 737 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-20 18:47:13,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:13,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 320 proven. 737 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-20 18:47:13,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571574503] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:13,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:13,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 31 [2024-09-20 18:47:13,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456997174] [2024-09-20 18:47:13,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:13,721 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-20 18:47:13,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:13,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-20 18:47:13,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=592, Unknown=0, NotChecked=0, Total=930 [2024-09-20 18:47:13,724 INFO L87 Difference]: Start difference. First operand 192 states and 193 transitions. Second operand has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 29 states have internal predecessors, (82), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-20 18:47:13,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:13,832 INFO L93 Difference]: Finished difference Result 205 states and 207 transitions. [2024-09-20 18:47:13,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-20 18:47:13,832 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 29 states have internal predecessors, (82), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 189 [2024-09-20 18:47:13,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:13,834 INFO L225 Difference]: With dead ends: 205 [2024-09-20 18:47:13,834 INFO L226 Difference]: Without dead ends: 203 [2024-09-20 18:47:13,834 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 396 SyntacticMatches, 48 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=344, Invalid=648, Unknown=0, NotChecked=0, Total=992 [2024-09-20 18:47:13,834 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:13,834 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 81 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:47:13,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-09-20 18:47:13,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 199. [2024-09-20 18:47:13,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 147 states have (on average 1.0136054421768708) internal successors, (149), 148 states have internal predecessors, (149), 26 states have call successors, (26), 26 states have call predecessors, (26), 25 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-20 18:47:13,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2024-09-20 18:47:13,847 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 189 [2024-09-20 18:47:13,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:13,847 INFO L474 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2024-09-20 18:47:13,847 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 29 states have internal predecessors, (82), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-20 18:47:13,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:13,848 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2024-09-20 18:47:13,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-09-20 18:47:13,848 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:13,848 INFO L216 NwaCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:13,860 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-09-20 18:47:14,052 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,46 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:14,052 INFO L399 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:14,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:14,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1500180084, now seen corresponding path program 45 times [2024-09-20 18:47:14,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:14,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918900399] [2024-09-20 18:47:14,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:14,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:14,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:14,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:14,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-20 18:47:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:14,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 18:47:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:14,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 18:47:14,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:14,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-20 18:47:14,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:14,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 18:47:14,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:14,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-20 18:47:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:14,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 18:47:14,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:14,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-20 18:47:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:14,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 18:47:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:14,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-20 18:47:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:14,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 18:47:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:14,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-20 18:47:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:14,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 18:47:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:14,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-20 18:47:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:14,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-20 18:47:14,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:14,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-20 18:47:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:14,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-20 18:47:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:14,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-20 18:47:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:14,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-20 18:47:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:14,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-20 18:47:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:14,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-20 18:47:14,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:14,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-20 18:47:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:14,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-20 18:47:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:14,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 784 proven. 343 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-20 18:47:14,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:14,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918900399] [2024-09-20 18:47:14,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918900399] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:14,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953111924] [2024-09-20 18:47:14,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:47:14,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:14,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:14,830 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:14,831 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-09-20 18:47:14,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2024-09-20 18:47:14,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:14,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-20 18:47:14,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:15,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-20 18:47:15,685 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:16,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-20 18:47:16,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953111924] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:16,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:16,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 77 [2024-09-20 18:47:16,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974904390] [2024-09-20 18:47:16,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:16,324 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-09-20 18:47:16,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:16,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-09-20 18:47:16,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1330, Invalid=4522, Unknown=0, NotChecked=0, Total=5852 [2024-09-20 18:47:16,325 INFO L87 Difference]: Start difference. First operand 199 states and 200 transitions. Second operand has 77 states, 77 states have (on average 1.7272727272727273) internal successors, (133), 77 states have internal predecessors, (133), 49 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-20 18:47:16,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:16,552 INFO L93 Difference]: Finished difference Result 280 states and 305 transitions. [2024-09-20 18:47:16,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-09-20 18:47:16,552 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 1.7272727272727273) internal successors, (133), 77 states have internal predecessors, (133), 49 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Word has length 196 [2024-09-20 18:47:16,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:16,554 INFO L225 Difference]: With dead ends: 280 [2024-09-20 18:47:16,554 INFO L226 Difference]: Without dead ends: 200 [2024-09-20 18:47:16,555 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 368 SyntacticMatches, 47 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3749 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1330, Invalid=4522, Unknown=0, NotChecked=0, Total=5852 [2024-09-20 18:47:16,555 INFO L434 NwaCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:16,555 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 497 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:47:16,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-09-20 18:47:16,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2024-09-20 18:47:16,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 148 states have (on average 1.0135135135135136) internal successors, (150), 149 states have internal predecessors, (150), 26 states have call successors, (26), 26 states have call predecessors, (26), 25 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-20 18:47:16,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 201 transitions. [2024-09-20 18:47:16,568 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 201 transitions. Word has length 196 [2024-09-20 18:47:16,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:16,568 INFO L474 AbstractCegarLoop]: Abstraction has 200 states and 201 transitions. [2024-09-20 18:47:16,568 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 1.7272727272727273) internal successors, (133), 77 states have internal predecessors, (133), 49 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-20 18:47:16,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:16,568 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 201 transitions. [2024-09-20 18:47:16,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-09-20 18:47:16,569 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:16,569 INFO L216 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:16,582 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2024-09-20 18:47:16,770 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,47 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:16,771 INFO L399 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:16,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:16,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1290217832, now seen corresponding path program 46 times [2024-09-20 18:47:16,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:16,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702448918] [2024-09-20 18:47:16,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:16,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:17,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:17,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-20 18:47:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:17,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-20 18:47:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:17,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 18:47:17,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:17,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 18:47:17,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:17,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-20 18:47:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:17,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 18:47:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:17,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-20 18:47:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:17,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 18:47:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:17,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-20 18:47:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:17,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 18:47:17,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:17,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-20 18:47:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:17,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 18:47:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:17,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-20 18:47:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:17,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 18:47:17,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:17,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-20 18:47:17,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:17,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-20 18:47:17,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:17,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-20 18:47:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:17,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-20 18:47:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:17,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-20 18:47:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:17,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-20 18:47:17,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:17,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-20 18:47:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:17,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-20 18:47:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:17,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-20 18:47:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:17,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 322 proven. 829 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-20 18:47:17,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:17,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702448918] [2024-09-20 18:47:17,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702448918] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:17,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694934656] [2024-09-20 18:47:17,310 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:47:17,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:17,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:17,311 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:17,312 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-09-20 18:47:17,378 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:47:17,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:17,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-20 18:47:17,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:17,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 346 proven. 805 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-20 18:47:17,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:18,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 346 proven. 805 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-20 18:47:18,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694934656] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:18,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:18,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 32 [2024-09-20 18:47:18,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394365659] [2024-09-20 18:47:18,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:18,029 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-20 18:47:18,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:18,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-20 18:47:18,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=628, Unknown=0, NotChecked=0, Total=992 [2024-09-20 18:47:18,030 INFO L87 Difference]: Start difference. First operand 200 states and 201 transitions. Second operand has 32 states, 32 states have (on average 2.65625) internal successors, (85), 30 states have internal predecessors, (85), 25 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-20 18:47:18,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:18,169 INFO L93 Difference]: Finished difference Result 213 states and 215 transitions. [2024-09-20 18:47:18,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-20 18:47:18,169 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.65625) internal successors, (85), 30 states have internal predecessors, (85), 25 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 197 [2024-09-20 18:47:18,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:18,170 INFO L225 Difference]: With dead ends: 213 [2024-09-20 18:47:18,170 INFO L226 Difference]: Without dead ends: 211 [2024-09-20 18:47:18,171 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 415 SyntacticMatches, 48 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=370, Invalid=686, Unknown=0, NotChecked=0, Total=1056 [2024-09-20 18:47:18,171 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:18,171 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 100 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:47:18,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-09-20 18:47:18,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 207. [2024-09-20 18:47:18,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 153 states have (on average 1.0130718954248366) internal successors, (155), 154 states have internal predecessors, (155), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-20 18:47:18,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2024-09-20 18:47:18,182 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 197 [2024-09-20 18:47:18,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:18,182 INFO L474 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2024-09-20 18:47:18,182 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.65625) internal successors, (85), 30 states have internal predecessors, (85), 25 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-20 18:47:18,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:18,182 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2024-09-20 18:47:18,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-09-20 18:47:18,183 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:18,183 INFO L216 NwaCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:18,196 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2024-09-20 18:47:18,387 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-09-20 18:47:18,388 INFO L399 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:18,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:18,388 INFO L85 PathProgramCache]: Analyzing trace with hash 2145418123, now seen corresponding path program 47 times [2024-09-20 18:47:18,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:18,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68276434] [2024-09-20 18:47:18,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:18,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:18,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-20 18:47:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-20 18:47:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 18:47:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 18:47:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,334 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-20 18:47:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 18:47:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-20 18:47:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 18:47:19,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-20 18:47:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 18:47:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-20 18:47:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 18:47:19,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-20 18:47:19,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 18:47:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-20 18:47:19,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-20 18:47:19,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-20 18:47:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-20 18:47:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-20 18:47:19,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-20 18:47:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-20 18:47:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-20 18:47:19,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-20 18:47:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-20 18:47:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 854 proven. 370 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-20 18:47:19,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:19,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68276434] [2024-09-20 18:47:19,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68276434] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:19,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578464584] [2024-09-20 18:47:19,363 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:47:19,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:19,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:19,364 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:19,366 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-09-20 18:47:19,450 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2024-09-20 18:47:19,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:19,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-09-20 18:47:19,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:20,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-20 18:47:20,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:21,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-20 18:47:21,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578464584] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:21,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:21,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 80 [2024-09-20 18:47:21,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733484416] [2024-09-20 18:47:21,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:21,187 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-09-20 18:47:21,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:21,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-09-20 18:47:21,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1435, Invalid=4885, Unknown=0, NotChecked=0, Total=6320 [2024-09-20 18:47:21,188 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand has 80 states, 80 states have (on average 1.725) internal successors, (138), 80 states have internal predecessors, (138), 51 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-20 18:47:21,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:21,463 INFO L93 Difference]: Finished difference Result 291 states and 317 transitions. [2024-09-20 18:47:21,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-09-20 18:47:21,463 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.725) internal successors, (138), 80 states have internal predecessors, (138), 51 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Word has length 204 [2024-09-20 18:47:21,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:21,464 INFO L225 Difference]: With dead ends: 291 [2024-09-20 18:47:21,464 INFO L226 Difference]: Without dead ends: 208 [2024-09-20 18:47:21,465 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 383 SyntacticMatches, 49 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4056 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1435, Invalid=4885, Unknown=0, NotChecked=0, Total=6320 [2024-09-20 18:47:21,465 INFO L434 NwaCegarLoop]: 58 mSDtfsCounter, 0 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:21,465 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 386 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:47:21,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-09-20 18:47:21,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2024-09-20 18:47:21,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 154 states have (on average 1.0129870129870129) internal successors, (156), 155 states have internal predecessors, (156), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-20 18:47:21,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 209 transitions. [2024-09-20 18:47:21,480 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 209 transitions. Word has length 204 [2024-09-20 18:47:21,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:21,480 INFO L474 AbstractCegarLoop]: Abstraction has 208 states and 209 transitions. [2024-09-20 18:47:21,480 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 1.725) internal successors, (138), 80 states have internal predecessors, (138), 51 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-20 18:47:21,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:21,481 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 209 transitions. [2024-09-20 18:47:21,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-09-20 18:47:21,482 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:21,482 INFO L216 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:21,496 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-09-20 18:47:21,685 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-09-20 18:47:21,685 INFO L399 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:21,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:21,686 INFO L85 PathProgramCache]: Analyzing trace with hash -167480169, now seen corresponding path program 48 times [2024-09-20 18:47:21,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:21,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479030701] [2024-09-20 18:47:21,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:21,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:21,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:22,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-20 18:47:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 18:47:22,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-20 18:47:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-20 18:47:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 18:47:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 18:47:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 18:47:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-20 18:47:22,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 18:47:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-20 18:47:22,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 18:47:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-20 18:47:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 18:47:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-20 18:47:22,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 18:47:22,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-20 18:47:22,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-20 18:47:22,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-20 18:47:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-20 18:47:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-20 18:47:22,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 18:47:22,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-20 18:47:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-20 18:47:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-20 18:47:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:22,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 348 proven. 901 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-20 18:47:22,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:22,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479030701] [2024-09-20 18:47:22,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479030701] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:22,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355198936] [2024-09-20 18:47:22,253 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:47:22,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:22,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:22,254 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:22,255 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-09-20 18:47:22,340 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2024-09-20 18:47:22,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:22,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-20 18:47:22,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:22,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 373 proven. 876 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-20 18:47:22,456 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:23,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 373 proven. 876 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-20 18:47:23,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355198936] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:23,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:23,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 33 [2024-09-20 18:47:23,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50231884] [2024-09-20 18:47:23,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:23,024 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-20 18:47:23,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:23,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-20 18:47:23,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=665, Unknown=0, NotChecked=0, Total=1056 [2024-09-20 18:47:23,024 INFO L87 Difference]: Start difference. First operand 208 states and 209 transitions. Second operand has 33 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 31 states have internal predecessors, (88), 26 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-20 18:47:23,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:23,161 INFO L93 Difference]: Finished difference Result 221 states and 223 transitions. [2024-09-20 18:47:23,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-20 18:47:23,161 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 31 states have internal predecessors, (88), 26 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 205 [2024-09-20 18:47:23,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:23,163 INFO L225 Difference]: With dead ends: 221 [2024-09-20 18:47:23,163 INFO L226 Difference]: Without dead ends: 219 [2024-09-20 18:47:23,163 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 432 SyntacticMatches, 50 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=397, Invalid=725, Unknown=0, NotChecked=0, Total=1122 [2024-09-20 18:47:23,163 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:23,163 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 111 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:47:23,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-09-20 18:47:23,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 215. [2024-09-20 18:47:23,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 159 states have (on average 1.0125786163522013) internal successors, (161), 160 states have internal predecessors, (161), 28 states have call successors, (28), 28 states have call predecessors, (28), 27 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-20 18:47:23,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 216 transitions. [2024-09-20 18:47:23,174 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 216 transitions. Word has length 205 [2024-09-20 18:47:23,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:23,174 INFO L474 AbstractCegarLoop]: Abstraction has 215 states and 216 transitions. [2024-09-20 18:47:23,175 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 31 states have internal predecessors, (88), 26 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-20 18:47:23,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:23,175 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 216 transitions. [2024-09-20 18:47:23,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-09-20 18:47:23,175 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:23,175 INFO L216 NwaCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:23,192 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-09-20 18:47:23,376 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,50 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:23,376 INFO L399 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:23,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:23,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1067061076, now seen corresponding path program 49 times [2024-09-20 18:47:23,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:23,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835427218] [2024-09-20 18:47:23,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:23,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:23,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:24,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:24,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-20 18:47:24,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:24,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 18:47:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:24,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-20 18:47:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:24,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-20 18:47:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:24,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 18:47:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:24,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 18:47:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:24,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 18:47:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:24,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-20 18:47:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:24,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 18:47:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:24,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-20 18:47:24,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:24,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 18:47:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:24,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-20 18:47:24,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:24,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 18:47:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:24,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-20 18:47:24,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:24,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 18:47:24,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:24,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-20 18:47:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:24,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-20 18:47:24,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:24,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-20 18:47:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:24,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-20 18:47:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:24,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-20 18:47:24,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:24,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 18:47:24,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:24,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-20 18:47:24,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:24,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-20 18:47:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:24,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-20 18:47:24,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:24,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-20 18:47:24,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:24,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 927 proven. 398 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-20 18:47:24,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:24,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835427218] [2024-09-20 18:47:24,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835427218] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:24,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419816463] [2024-09-20 18:47:24,466 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:47:24,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:24,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:24,467 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:24,468 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-09-20 18:47:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:24,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-20 18:47:24,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:25,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-20 18:47:25,606 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:26,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-20 18:47:26,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419816463] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:26,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:26,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 83 [2024-09-20 18:47:26,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621258302] [2024-09-20 18:47:26,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:26,461 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-09-20 18:47:26,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:26,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-09-20 18:47:26,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1544, Invalid=5262, Unknown=0, NotChecked=0, Total=6806 [2024-09-20 18:47:26,462 INFO L87 Difference]: Start difference. First operand 215 states and 216 transitions. Second operand has 83 states, 83 states have (on average 1.7228915662650603) internal successors, (143), 83 states have internal predecessors, (143), 53 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-09-20 18:47:26,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:26,742 INFO L93 Difference]: Finished difference Result 302 states and 329 transitions. [2024-09-20 18:47:26,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-09-20 18:47:26,742 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 1.7228915662650603) internal successors, (143), 83 states have internal predecessors, (143), 53 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Word has length 212 [2024-09-20 18:47:26,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:26,744 INFO L225 Difference]: With dead ends: 302 [2024-09-20 18:47:26,744 INFO L226 Difference]: Without dead ends: 216 [2024-09-20 18:47:26,745 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 398 SyntacticMatches, 51 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4375 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1544, Invalid=5262, Unknown=0, NotChecked=0, Total=6806 [2024-09-20 18:47:26,746 INFO L434 NwaCegarLoop]: 60 mSDtfsCounter, 0 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:26,746 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 399 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:47:26,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-09-20 18:47:26,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2024-09-20 18:47:26,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 160 states have (on average 1.0125) internal successors, (162), 161 states have internal predecessors, (162), 28 states have call successors, (28), 28 states have call predecessors, (28), 27 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-20 18:47:26,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 217 transitions. [2024-09-20 18:47:26,760 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 217 transitions. Word has length 212 [2024-09-20 18:47:26,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:26,760 INFO L474 AbstractCegarLoop]: Abstraction has 216 states and 217 transitions. [2024-09-20 18:47:26,760 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 1.7228915662650603) internal successors, (143), 83 states have internal predecessors, (143), 53 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-09-20 18:47:26,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:26,760 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 217 transitions. [2024-09-20 18:47:26,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-09-20 18:47:26,761 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:26,761 INFO L216 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:26,777 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-09-20 18:47:26,961 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2024-09-20 18:47:26,961 INFO L399 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:26,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:26,962 INFO L85 PathProgramCache]: Analyzing trace with hash -424272456, now seen corresponding path program 50 times [2024-09-20 18:47:26,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:26,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251537216] [2024-09-20 18:47:26,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:26,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:26,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 18:47:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 18:47:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-20 18:47:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 18:47:27,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 18:47:27,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 18:47:27,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 18:47:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:47:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 18:47:27,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 18:47:27,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-20 18:47:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 18:47:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-20 18:47:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 18:47:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-20 18:47:27,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 18:47:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-20 18:47:27,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 18:47:27,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-20 18:47:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-20 18:47:27,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-20 18:47:27,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-20 18:47:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-20 18:47:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-20 18:47:27,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-20 18:47:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 375 proven. 976 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-20 18:47:27,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:27,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251537216] [2024-09-20 18:47:27,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251537216] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:27,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866618733] [2024-09-20 18:47:27,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:47:27,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:27,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:27,597 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:27,598 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-09-20 18:47:27,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:47:27,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:27,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-09-20 18:47:27,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:27,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 401 proven. 950 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-20 18:47:27,789 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:28,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 401 proven. 950 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-20 18:47:28,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866618733] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:28,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:28,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 34 [2024-09-20 18:47:28,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416776869] [2024-09-20 18:47:28,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:28,419 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-20 18:47:28,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:28,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-20 18:47:28,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=703, Unknown=0, NotChecked=0, Total=1122 [2024-09-20 18:47:28,420 INFO L87 Difference]: Start difference. First operand 216 states and 217 transitions. Second operand has 34 states, 34 states have (on average 2.676470588235294) internal successors, (91), 32 states have internal predecessors, (91), 27 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-20 18:47:28,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:28,556 INFO L93 Difference]: Finished difference Result 229 states and 231 transitions. [2024-09-20 18:47:28,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-20 18:47:28,556 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.676470588235294) internal successors, (91), 32 states have internal predecessors, (91), 27 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 213 [2024-09-20 18:47:28,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:28,558 INFO L225 Difference]: With dead ends: 229 [2024-09-20 18:47:28,558 INFO L226 Difference]: Without dead ends: 227 [2024-09-20 18:47:28,558 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 447 SyntacticMatches, 54 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=425, Invalid=765, Unknown=0, NotChecked=0, Total=1190 [2024-09-20 18:47:28,558 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:28,559 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 91 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:47:28,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-09-20 18:47:28,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 223. [2024-09-20 18:47:28,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 165 states have (on average 1.0121212121212122) internal successors, (167), 166 states have internal predecessors, (167), 29 states have call successors, (29), 29 states have call predecessors, (29), 28 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-20 18:47:28,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 224 transitions. [2024-09-20 18:47:28,571 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 224 transitions. Word has length 213 [2024-09-20 18:47:28,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:28,571 INFO L474 AbstractCegarLoop]: Abstraction has 223 states and 224 transitions. [2024-09-20 18:47:28,571 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.676470588235294) internal successors, (91), 32 states have internal predecessors, (91), 27 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-20 18:47:28,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:28,571 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 224 transitions. [2024-09-20 18:47:28,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-09-20 18:47:28,572 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:28,572 INFO L216 NwaCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:28,585 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-09-20 18:47:28,776 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,52 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:28,777 INFO L399 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:28,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:28,777 INFO L85 PathProgramCache]: Analyzing trace with hash -516231061, now seen corresponding path program 51 times [2024-09-20 18:47:28,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:28,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123830696] [2024-09-20 18:47:28,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:28,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 18:47:29,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 18:47:29,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-20 18:47:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 18:47:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 18:47:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 18:47:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 18:47:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:47:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 18:47:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 18:47:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-20 18:47:29,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 18:47:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-20 18:47:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 18:47:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-20 18:47:29,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 18:47:29,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-20 18:47:29,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 18:47:29,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-20 18:47:29,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-20 18:47:29,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-20 18:47:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-20 18:47:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-20 18:47:29,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-20 18:47:29,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-20 18:47:29,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-20 18:47:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:29,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1003 proven. 427 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-20 18:47:29,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:29,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123830696] [2024-09-20 18:47:29,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123830696] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:29,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847759662] [2024-09-20 18:47:29,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:47:29,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:29,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:29,950 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:29,951 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-09-20 18:47:30,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2024-09-20 18:47:30,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:30,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-20 18:47:30,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:31,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-20 18:47:31,147 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:31,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-20 18:47:31,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847759662] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:31,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:31,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57, 57] total 86 [2024-09-20 18:47:31,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925285283] [2024-09-20 18:47:31,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:31,939 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-09-20 18:47:31,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:31,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-09-20 18:47:31,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1657, Invalid=5653, Unknown=0, NotChecked=0, Total=7310 [2024-09-20 18:47:31,940 INFO L87 Difference]: Start difference. First operand 223 states and 224 transitions. Second operand has 86 states, 86 states have (on average 1.7209302325581395) internal successors, (148), 86 states have internal predecessors, (148), 55 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-09-20 18:47:32,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:32,242 INFO L93 Difference]: Finished difference Result 313 states and 341 transitions. [2024-09-20 18:47:32,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-09-20 18:47:32,243 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 1.7209302325581395) internal successors, (148), 86 states have internal predecessors, (148), 55 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Word has length 220 [2024-09-20 18:47:32,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:32,244 INFO L225 Difference]: With dead ends: 313 [2024-09-20 18:47:32,244 INFO L226 Difference]: Without dead ends: 224 [2024-09-20 18:47:32,244 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 413 SyntacticMatches, 53 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4706 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1657, Invalid=5653, Unknown=0, NotChecked=0, Total=7310 [2024-09-20 18:47:32,245 INFO L434 NwaCegarLoop]: 62 mSDtfsCounter, 0 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:32,245 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 412 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:47:32,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-09-20 18:47:32,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2024-09-20 18:47:32,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 166 states have (on average 1.0120481927710843) internal successors, (168), 167 states have internal predecessors, (168), 29 states have call successors, (29), 29 states have call predecessors, (29), 28 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-20 18:47:32,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 225 transitions. [2024-09-20 18:47:32,257 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 225 transitions. Word has length 220 [2024-09-20 18:47:32,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:32,257 INFO L474 AbstractCegarLoop]: Abstraction has 224 states and 225 transitions. [2024-09-20 18:47:32,257 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 1.7209302325581395) internal successors, (148), 86 states have internal predecessors, (148), 55 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-09-20 18:47:32,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:32,258 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 225 transitions. [2024-09-20 18:47:32,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-09-20 18:47:32,258 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:32,259 INFO L216 NwaCegarLoop]: trace histogram [27, 27, 27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:32,271 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-09-20 18:47:32,462 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,53 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:32,462 INFO L399 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:32,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:32,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1304211081, now seen corresponding path program 52 times [2024-09-20 18:47:32,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:32,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166198913] [2024-09-20 18:47:32,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:32,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:33,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:33,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:33,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-20 18:47:33,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:33,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 18:47:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:33,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 18:47:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:33,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 18:47:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:33,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 18:47:33,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:33,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 18:47:33,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:33,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 18:47:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:33,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-20 18:47:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:33,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 18:47:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:33,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 18:47:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:33,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 18:47:33,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:33,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-20 18:47:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:33,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 18:47:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:33,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-20 18:47:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:33,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 18:47:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:33,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-20 18:47:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:33,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 18:47:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:33,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-20 18:47:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:33,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-20 18:47:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:33,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-20 18:47:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:33,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-20 18:47:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:33,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-20 18:47:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:33,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-20 18:47:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:33,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-20 18:47:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:33,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-20 18:47:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:33,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-20 18:47:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:33,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 403 proven. 1054 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-20 18:47:33,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:33,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166198913] [2024-09-20 18:47:33,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166198913] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:33,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111097913] [2024-09-20 18:47:33,104 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:47:33,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:33,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:33,105 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:33,106 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-09-20 18:47:33,183 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:47:33,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:33,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-09-20 18:47:33,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:33,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 430 proven. 1027 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-20 18:47:33,307 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:33,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 430 proven. 1027 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-20 18:47:33,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111097913] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:33,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:33,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 35 [2024-09-20 18:47:33,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320004409] [2024-09-20 18:47:33,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:33,962 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-20 18:47:33,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:33,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-20 18:47:33,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=448, Invalid=742, Unknown=0, NotChecked=0, Total=1190 [2024-09-20 18:47:33,962 INFO L87 Difference]: Start difference. First operand 224 states and 225 transitions. Second operand has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 33 states have internal predecessors, (94), 28 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-20 18:47:34,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:34,117 INFO L93 Difference]: Finished difference Result 237 states and 239 transitions. [2024-09-20 18:47:34,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-20 18:47:34,117 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 33 states have internal predecessors, (94), 28 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 221 [2024-09-20 18:47:34,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:34,119 INFO L225 Difference]: With dead ends: 237 [2024-09-20 18:47:34,119 INFO L226 Difference]: Without dead ends: 235 [2024-09-20 18:47:34,119 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 466 SyntacticMatches, 54 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1047 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=454, Invalid=806, Unknown=0, NotChecked=0, Total=1260 [2024-09-20 18:47:34,119 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:34,119 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 102 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:47:34,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-09-20 18:47:34,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 231. [2024-09-20 18:47:34,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 171 states have (on average 1.0116959064327486) internal successors, (173), 172 states have internal predecessors, (173), 30 states have call successors, (30), 30 states have call predecessors, (30), 29 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-20 18:47:34,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2024-09-20 18:47:34,133 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 221 [2024-09-20 18:47:34,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:34,133 INFO L474 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2024-09-20 18:47:34,133 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 33 states have internal predecessors, (94), 28 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-20 18:47:34,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:34,133 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2024-09-20 18:47:34,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-09-20 18:47:34,134 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:34,134 INFO L216 NwaCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:34,147 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2024-09-20 18:47:34,334 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2024-09-20 18:47:34,335 INFO L399 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:34,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:34,335 INFO L85 PathProgramCache]: Analyzing trace with hash -906045492, now seen corresponding path program 53 times [2024-09-20 18:47:34,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:34,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747961162] [2024-09-20 18:47:34,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:34,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-20 18:47:35,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 18:47:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 18:47:35,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 18:47:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 18:47:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 18:47:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 18:47:35,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-20 18:47:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 18:47:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 18:47:35,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 18:47:35,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-20 18:47:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 18:47:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-20 18:47:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 18:47:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-20 18:47:35,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 18:47:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-20 18:47:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-20 18:47:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-20 18:47:35,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-20 18:47:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-20 18:47:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-20 18:47:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-20 18:47:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-20 18:47:35,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-20 18:47:35,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-20 18:47:35,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1082 proven. 457 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-20 18:47:35,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:35,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747961162] [2024-09-20 18:47:35,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747961162] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:35,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909353887] [2024-09-20 18:47:35,542 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:47:35,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:35,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:35,544 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:35,545 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-09-20 18:47:35,636 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2024-09-20 18:47:35,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:35,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-09-20 18:47:35,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:36,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-20 18:47:36,835 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:37,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-20 18:47:37,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909353887] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:37,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:37,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59, 59] total 89 [2024-09-20 18:47:37,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456359946] [2024-09-20 18:47:37,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:37,826 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2024-09-20 18:47:37,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:37,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2024-09-20 18:47:37,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1774, Invalid=6058, Unknown=0, NotChecked=0, Total=7832 [2024-09-20 18:47:37,828 INFO L87 Difference]: Start difference. First operand 231 states and 232 transitions. Second operand has 89 states, 89 states have (on average 1.7191011235955056) internal successors, (153), 89 states have internal predecessors, (153), 57 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-09-20 18:47:38,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:38,142 INFO L93 Difference]: Finished difference Result 324 states and 353 transitions. [2024-09-20 18:47:38,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-09-20 18:47:38,143 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 1.7191011235955056) internal successors, (153), 89 states have internal predecessors, (153), 57 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) Word has length 228 [2024-09-20 18:47:38,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:38,144 INFO L225 Difference]: With dead ends: 324 [2024-09-20 18:47:38,144 INFO L226 Difference]: Without dead ends: 232 [2024-09-20 18:47:38,145 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 428 SyntacticMatches, 55 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5049 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1774, Invalid=6058, Unknown=0, NotChecked=0, Total=7832 [2024-09-20 18:47:38,145 INFO L434 NwaCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:38,146 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 495 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 18:47:38,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-09-20 18:47:38,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2024-09-20 18:47:38,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 172 states have (on average 1.0116279069767442) internal successors, (174), 173 states have internal predecessors, (174), 30 states have call successors, (30), 30 states have call predecessors, (30), 29 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-20 18:47:38,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 233 transitions. [2024-09-20 18:47:38,159 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 233 transitions. Word has length 228 [2024-09-20 18:47:38,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:38,159 INFO L474 AbstractCegarLoop]: Abstraction has 232 states and 233 transitions. [2024-09-20 18:47:38,159 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 1.7191011235955056) internal successors, (153), 89 states have internal predecessors, (153), 57 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-09-20 18:47:38,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:38,159 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 233 transitions. [2024-09-20 18:47:38,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-09-20 18:47:38,160 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:38,160 INFO L216 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:38,173 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2024-09-20 18:47:38,361 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,55 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:38,362 INFO L399 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:38,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:38,362 INFO L85 PathProgramCache]: Analyzing trace with hash -196383528, now seen corresponding path program 54 times [2024-09-20 18:47:38,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:38,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848823705] [2024-09-20 18:47:38,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:38,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:38,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 18:47:39,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 18:47:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 18:47:39,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 18:47:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 18:47:39,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 18:47:39,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-20 18:47:39,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 18:47:39,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-20 18:47:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 18:47:39,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 18:47:39,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 18:47:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-20 18:47:39,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-20 18:47:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-20 18:47:39,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-20 18:47:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-20 18:47:39,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-20 18:47:39,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-20 18:47:39,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-20 18:47:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-20 18:47:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-20 18:47:39,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-20 18:47:39,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-20 18:47:39,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-20 18:47:39,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-20 18:47:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-20 18:47:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:39,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 432 proven. 1135 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-20 18:47:39,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:39,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848823705] [2024-09-20 18:47:39,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848823705] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:39,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865382688] [2024-09-20 18:47:39,098 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:47:39,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:39,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:39,099 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:39,102 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-09-20 18:47:39,196 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2024-09-20 18:47:39,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:39,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-09-20 18:47:39,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:39,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 460 proven. 1107 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-20 18:47:39,326 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:40,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 460 proven. 1107 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-20 18:47:40,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865382688] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:40,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:40,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 36 [2024-09-20 18:47:40,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360812955] [2024-09-20 18:47:40,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:40,011 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-20 18:47:40,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:40,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-20 18:47:40,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=478, Invalid=782, Unknown=0, NotChecked=0, Total=1260 [2024-09-20 18:47:40,012 INFO L87 Difference]: Start difference. First operand 232 states and 233 transitions. Second operand has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 34 states have internal predecessors, (97), 29 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-20 18:47:40,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:40,161 INFO L93 Difference]: Finished difference Result 245 states and 247 transitions. [2024-09-20 18:47:40,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-20 18:47:40,161 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 34 states have internal predecessors, (97), 29 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 229 [2024-09-20 18:47:40,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:40,163 INFO L225 Difference]: With dead ends: 245 [2024-09-20 18:47:40,163 INFO L226 Difference]: Without dead ends: 243 [2024-09-20 18:47:40,163 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 483 SyntacticMatches, 56 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1114 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=484, Invalid=848, Unknown=0, NotChecked=0, Total=1332 [2024-09-20 18:47:40,163 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:40,163 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 86 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:47:40,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-09-20 18:47:40,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 239. [2024-09-20 18:47:40,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 177 states have (on average 1.0112994350282485) internal successors, (179), 178 states have internal predecessors, (179), 31 states have call successors, (31), 31 states have call predecessors, (31), 30 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-20 18:47:40,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 240 transitions. [2024-09-20 18:47:40,176 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 240 transitions. Word has length 229 [2024-09-20 18:47:40,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:40,177 INFO L474 AbstractCegarLoop]: Abstraction has 239 states and 240 transitions. [2024-09-20 18:47:40,177 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 34 states have internal predecessors, (97), 29 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-20 18:47:40,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:40,177 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 240 transitions. [2024-09-20 18:47:40,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-09-20 18:47:40,178 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:40,178 INFO L216 NwaCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:40,191 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2024-09-20 18:47:40,378 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,56 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:40,379 INFO L399 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:40,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:40,379 INFO L85 PathProgramCache]: Analyzing trace with hash -888906421, now seen corresponding path program 55 times [2024-09-20 18:47:40,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:40,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901672040] [2024-09-20 18:47:40,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:40,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 18:47:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 18:47:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 18:47:41,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 18:47:41,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 18:47:41,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 18:47:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-20 18:47:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 18:47:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-20 18:47:41,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 18:47:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 18:47:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 18:47:41,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-20 18:47:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-20 18:47:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-20 18:47:41,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-20 18:47:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-20 18:47:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-20 18:47:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-20 18:47:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-20 18:47:41,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-20 18:47:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-20 18:47:41,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-20 18:47:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-20 18:47:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-20 18:47:41,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-20 18:47:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-20 18:47:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-20 18:47:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1164 proven. 488 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-20 18:47:41,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:41,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901672040] [2024-09-20 18:47:41,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901672040] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:41,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708217767] [2024-09-20 18:47:41,710 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:47:41,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:41,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:41,711 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:41,712 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-09-20 18:47:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-09-20 18:47:41,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:43,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-20 18:47:43,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:44,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-20 18:47:44,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708217767] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:44,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:44,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 92 [2024-09-20 18:47:44,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194821718] [2024-09-20 18:47:44,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:44,112 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2024-09-20 18:47:44,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:44,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2024-09-20 18:47:44,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1895, Invalid=6477, Unknown=0, NotChecked=0, Total=8372 [2024-09-20 18:47:44,114 INFO L87 Difference]: Start difference. First operand 239 states and 240 transitions. Second operand has 92 states, 92 states have (on average 1.7173913043478262) internal successors, (158), 92 states have internal predecessors, (158), 59 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2024-09-20 18:47:44,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:44,499 INFO L93 Difference]: Finished difference Result 335 states and 365 transitions. [2024-09-20 18:47:44,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-09-20 18:47:44,499 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 1.7173913043478262) internal successors, (158), 92 states have internal predecessors, (158), 59 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Word has length 236 [2024-09-20 18:47:44,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:44,500 INFO L225 Difference]: With dead ends: 335 [2024-09-20 18:47:44,500 INFO L226 Difference]: Without dead ends: 240 [2024-09-20 18:47:44,501 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 443 SyntacticMatches, 57 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5404 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1895, Invalid=6477, Unknown=0, NotChecked=0, Total=8372 [2024-09-20 18:47:44,501 INFO L434 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:44,501 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 791 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 18:47:44,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-09-20 18:47:44,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2024-09-20 18:47:44,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 178 states have (on average 1.0112359550561798) internal successors, (180), 179 states have internal predecessors, (180), 31 states have call successors, (31), 31 states have call predecessors, (31), 30 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-20 18:47:44,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 241 transitions. [2024-09-20 18:47:44,532 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 241 transitions. Word has length 236 [2024-09-20 18:47:44,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:44,532 INFO L474 AbstractCegarLoop]: Abstraction has 240 states and 241 transitions. [2024-09-20 18:47:44,535 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 1.7173913043478262) internal successors, (158), 92 states have internal predecessors, (158), 59 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2024-09-20 18:47:44,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:44,535 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 241 transitions. [2024-09-20 18:47:44,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-09-20 18:47:44,536 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:44,536 INFO L216 NwaCegarLoop]: trace histogram [29, 29, 29, 29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:44,561 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2024-09-20 18:47:44,737 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-09-20 18:47:44,738 INFO L399 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:44,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:44,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1323227561, now seen corresponding path program 56 times [2024-09-20 18:47:44,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:44,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526593174] [2024-09-20 18:47:44,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:44,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:44,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:45,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:45,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:45,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 18:47:45,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:45,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-20 18:47:45,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:45,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 18:47:45,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:45,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-20 18:47:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:45,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 18:47:45,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:45,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-20 18:47:45,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:45,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 18:47:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:45,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-20 18:47:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:45,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 18:47:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:45,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-20 18:47:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:45,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 18:47:45,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:45,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-20 18:47:45,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:45,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 18:47:45,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:45,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-20 18:47:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:45,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-20 18:47:45,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:45,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-20 18:47:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:45,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-20 18:47:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:45,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-20 18:47:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:45,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-20 18:47:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:45,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-20 18:47:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:45,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-20 18:47:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:45,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-20 18:47:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:45,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-20 18:47:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:45,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-20 18:47:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:45,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-20 18:47:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:45,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-20 18:47:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:45,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-20 18:47:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:45,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-20 18:47:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:45,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 462 proven. 1219 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-20 18:47:45,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:45,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526593174] [2024-09-20 18:47:45,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526593174] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:45,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019383446] [2024-09-20 18:47:45,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:47:45,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:45,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:45,517 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:45,518 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-09-20 18:47:45,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:47:45,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:45,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-09-20 18:47:45,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:45,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 491 proven. 1190 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-20 18:47:45,731 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:46,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 491 proven. 1190 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-20 18:47:46,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019383446] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:46,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:46,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 37 [2024-09-20 18:47:46,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016923216] [2024-09-20 18:47:46,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:46,499 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-20 18:47:46,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:46,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-20 18:47:46,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=509, Invalid=823, Unknown=0, NotChecked=0, Total=1332 [2024-09-20 18:47:46,504 INFO L87 Difference]: Start difference. First operand 240 states and 241 transitions. Second operand has 37 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 35 states have internal predecessors, (100), 30 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-20 18:47:46,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:46,645 INFO L93 Difference]: Finished difference Result 253 states and 255 transitions. [2024-09-20 18:47:46,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-20 18:47:46,646 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 35 states have internal predecessors, (100), 30 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 237 [2024-09-20 18:47:46,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:46,647 INFO L225 Difference]: With dead ends: 253 [2024-09-20 18:47:46,648 INFO L226 Difference]: Without dead ends: 251 [2024-09-20 18:47:46,648 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 498 SyntacticMatches, 60 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1243 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=515, Invalid=891, Unknown=0, NotChecked=0, Total=1406 [2024-09-20 18:47:46,648 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:46,648 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 125 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:47:46,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-09-20 18:47:46,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 247. [2024-09-20 18:47:46,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 183 states have (on average 1.010928961748634) internal successors, (185), 184 states have internal predecessors, (185), 32 states have call successors, (32), 32 states have call predecessors, (32), 31 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-20 18:47:46,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 248 transitions. [2024-09-20 18:47:46,663 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 248 transitions. Word has length 237 [2024-09-20 18:47:46,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:46,664 INFO L474 AbstractCegarLoop]: Abstraction has 247 states and 248 transitions. [2024-09-20 18:47:46,664 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 35 states have internal predecessors, (100), 30 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-20 18:47:46,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:46,664 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 248 transitions. [2024-09-20 18:47:46,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-09-20 18:47:46,665 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:46,665 INFO L216 NwaCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:46,681 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-09-20 18:47:46,865 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-09-20 18:47:46,866 INFO L399 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:46,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:46,866 INFO L85 PathProgramCache]: Analyzing trace with hash 649185004, now seen corresponding path program 57 times [2024-09-20 18:47:46,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:46,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615746625] [2024-09-20 18:47:46,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:46,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:47,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:47,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 18:47:47,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:47,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-20 18:47:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:47,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 18:47:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:47,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-20 18:47:47,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:47,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 18:47:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:47,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-20 18:47:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:47,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 18:47:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:47,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-20 18:47:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:47,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 18:47:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:47,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-20 18:47:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:47,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 18:47:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:47,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-20 18:47:47,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:47,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 18:47:47,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:48,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-20 18:47:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:48,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-20 18:47:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:48,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-20 18:47:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:48,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-20 18:47:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:48,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-20 18:47:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:48,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-20 18:47:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:48,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-20 18:47:48,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:48,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-20 18:47:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:48,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-20 18:47:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:48,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-20 18:47:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:48,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-20 18:47:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:48,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-20 18:47:48,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:48,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-20 18:47:48,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:48,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-20 18:47:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:48,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-20 18:47:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:48,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-20 18:47:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:48,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1249 proven. 520 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-20 18:47:48,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:48,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615746625] [2024-09-20 18:47:48,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615746625] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:48,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726715365] [2024-09-20 18:47:48,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:47:48,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:48,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:48,017 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:48,018 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-09-20 18:47:48,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2024-09-20 18:47:48,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:48,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-09-20 18:47:48,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:49,310 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-20 18:47:49,310 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:50,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-20 18:47:50,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726715365] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:50,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:50,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 95 [2024-09-20 18:47:50,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496736034] [2024-09-20 18:47:50,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:50,416 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2024-09-20 18:47:50,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:50,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2024-09-20 18:47:50,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2020, Invalid=6910, Unknown=0, NotChecked=0, Total=8930 [2024-09-20 18:47:50,418 INFO L87 Difference]: Start difference. First operand 247 states and 248 transitions. Second operand has 95 states, 95 states have (on average 1.7157894736842105) internal successors, (163), 95 states have internal predecessors, (163), 61 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-09-20 18:47:50,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:50,796 INFO L93 Difference]: Finished difference Result 346 states and 377 transitions. [2024-09-20 18:47:50,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-09-20 18:47:50,797 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 1.7157894736842105) internal successors, (163), 95 states have internal predecessors, (163), 61 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) Word has length 244 [2024-09-20 18:47:50,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:50,798 INFO L225 Difference]: With dead ends: 346 [2024-09-20 18:47:50,799 INFO L226 Difference]: Without dead ends: 248 [2024-09-20 18:47:50,799 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 458 SyntacticMatches, 59 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5771 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2020, Invalid=6910, Unknown=0, NotChecked=0, Total=8930 [2024-09-20 18:47:50,800 INFO L434 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:50,800 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 770 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 18:47:50,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-09-20 18:47:50,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2024-09-20 18:47:50,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 184 states have (on average 1.0108695652173914) internal successors, (186), 185 states have internal predecessors, (186), 32 states have call successors, (32), 32 states have call predecessors, (32), 31 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-20 18:47:50,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 249 transitions. [2024-09-20 18:47:50,815 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 249 transitions. Word has length 244 [2024-09-20 18:47:50,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:50,815 INFO L474 AbstractCegarLoop]: Abstraction has 248 states and 249 transitions. [2024-09-20 18:47:50,815 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 1.7157894736842105) internal successors, (163), 95 states have internal predecessors, (163), 61 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-09-20 18:47:50,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:50,816 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 249 transitions. [2024-09-20 18:47:50,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-09-20 18:47:50,816 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:50,816 INFO L216 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:50,834 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2024-09-20 18:47:51,017 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-09-20 18:47:51,017 INFO L399 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:51,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:51,017 INFO L85 PathProgramCache]: Analyzing trace with hash -550845448, now seen corresponding path program 58 times [2024-09-20 18:47:51,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:51,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331140279] [2024-09-20 18:47:51,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:51,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:51,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 18:47:51,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 18:47:51,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-20 18:47:51,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 18:47:51,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-20 18:47:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 18:47:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-20 18:47:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 18:47:51,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-20 18:47:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 18:47:51,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-20 18:47:51,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 18:47:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-20 18:47:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-20 18:47:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-20 18:47:51,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-20 18:47:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-20 18:47:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-20 18:47:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-20 18:47:51,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-20 18:47:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-20 18:47:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-20 18:47:51,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-20 18:47:51,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-20 18:47:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-20 18:47:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-20 18:47:51,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-20 18:47:51,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-20 18:47:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-20 18:47:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 493 proven. 1306 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-20 18:47:51,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:51,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331140279] [2024-09-20 18:47:51,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331140279] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:51,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890924627] [2024-09-20 18:47:51,808 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:47:51,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:51,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:51,809 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:51,810 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-09-20 18:47:51,892 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:47:51,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:51,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-09-20 18:47:51,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:52,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 523 proven. 1276 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-20 18:47:52,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:52,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 523 proven. 1276 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-20 18:47:52,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890924627] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:52,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:52,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 38 [2024-09-20 18:47:52,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088089795] [2024-09-20 18:47:52,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:52,801 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-20 18:47:52,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:52,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-20 18:47:52,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=541, Invalid=865, Unknown=0, NotChecked=0, Total=1406 [2024-09-20 18:47:52,801 INFO L87 Difference]: Start difference. First operand 248 states and 249 transitions. Second operand has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 36 states have internal predecessors, (103), 31 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-20 18:47:52,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:52,984 INFO L93 Difference]: Finished difference Result 261 states and 263 transitions. [2024-09-20 18:47:52,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-09-20 18:47:52,984 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 36 states have internal predecessors, (103), 31 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 245 [2024-09-20 18:47:52,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:52,986 INFO L225 Difference]: With dead ends: 261 [2024-09-20 18:47:52,986 INFO L226 Difference]: Without dead ends: 259 [2024-09-20 18:47:52,986 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 517 SyntacticMatches, 60 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1254 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=547, Invalid=935, Unknown=0, NotChecked=0, Total=1482 [2024-09-20 18:47:52,986 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:52,986 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 112 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:47:52,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-09-20 18:47:52,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 255. [2024-09-20 18:47:53,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 189 states have (on average 1.0105820105820107) internal successors, (191), 190 states have internal predecessors, (191), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-20 18:47:53,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 256 transitions. [2024-09-20 18:47:53,001 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 256 transitions. Word has length 245 [2024-09-20 18:47:53,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:53,001 INFO L474 AbstractCegarLoop]: Abstraction has 255 states and 256 transitions. [2024-09-20 18:47:53,001 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 36 states have internal predecessors, (103), 31 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-20 18:47:53,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:53,001 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 256 transitions. [2024-09-20 18:47:53,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-09-20 18:47:53,002 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:53,002 INFO L216 NwaCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:53,015 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2024-09-20 18:47:53,206 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,60 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:53,207 INFO L399 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:53,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:53,207 INFO L85 PathProgramCache]: Analyzing trace with hash 967492139, now seen corresponding path program 59 times [2024-09-20 18:47:53,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:53,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855646163] [2024-09-20 18:47:53,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:53,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 18:47:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 18:47:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-20 18:47:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 18:47:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-20 18:47:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 18:47:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-20 18:47:54,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 18:47:54,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-20 18:47:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 18:47:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-20 18:47:54,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 18:47:54,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-20 18:47:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-20 18:47:54,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-20 18:47:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-20 18:47:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-20 18:47:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-20 18:47:54,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-20 18:47:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-20 18:47:54,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-20 18:47:54,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-20 18:47:54,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-20 18:47:54,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-20 18:47:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-20 18:47:54,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-20 18:47:54,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-20 18:47:54,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-20 18:47:54,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-20 18:47:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-20 18:47:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:54,550 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1337 proven. 553 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-20 18:47:54,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:54,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855646163] [2024-09-20 18:47:54,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855646163] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:54,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154095501] [2024-09-20 18:47:54,551 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:47:54,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:54,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:54,553 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:54,553 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-09-20 18:47:54,653 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2024-09-20 18:47:54,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:54,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-09-20 18:47:54,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:55,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-20 18:47:55,785 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:56,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-20 18:47:56,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154095501] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:56,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:56,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 98 [2024-09-20 18:47:56,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378534640] [2024-09-20 18:47:56,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:56,758 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-09-20 18:47:56,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:56,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-09-20 18:47:56,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2149, Invalid=7357, Unknown=0, NotChecked=0, Total=9506 [2024-09-20 18:47:56,760 INFO L87 Difference]: Start difference. First operand 255 states and 256 transitions. Second operand has 98 states, 98 states have (on average 1.7142857142857142) internal successors, (168), 98 states have internal predecessors, (168), 63 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-09-20 18:47:57,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:57,181 INFO L93 Difference]: Finished difference Result 357 states and 389 transitions. [2024-09-20 18:47:57,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-09-20 18:47:57,182 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 1.7142857142857142) internal successors, (168), 98 states have internal predecessors, (168), 63 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Word has length 252 [2024-09-20 18:47:57,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:57,183 INFO L225 Difference]: With dead ends: 357 [2024-09-20 18:47:57,183 INFO L226 Difference]: Without dead ends: 256 [2024-09-20 18:47:57,184 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 473 SyntacticMatches, 61 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6150 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2149, Invalid=7357, Unknown=0, NotChecked=0, Total=9506 [2024-09-20 18:47:57,184 INFO L434 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:57,184 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 464 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 972 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 18:47:57,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-09-20 18:47:57,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2024-09-20 18:47:57,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 190 states have (on average 1.0105263157894737) internal successors, (192), 191 states have internal predecessors, (192), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-20 18:47:57,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 257 transitions. [2024-09-20 18:47:57,200 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 257 transitions. Word has length 252 [2024-09-20 18:47:57,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:57,200 INFO L474 AbstractCegarLoop]: Abstraction has 256 states and 257 transitions. [2024-09-20 18:47:57,201 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 1.7142857142857142) internal successors, (168), 98 states have internal predecessors, (168), 63 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-09-20 18:47:57,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:57,201 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 257 transitions. [2024-09-20 18:47:57,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-09-20 18:47:57,202 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:57,202 INFO L216 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:57,216 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2024-09-20 18:47:57,402 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2024-09-20 18:47:57,404 INFO L399 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:57,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:57,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1895042249, now seen corresponding path program 60 times [2024-09-20 18:47:57,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:57,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725369925] [2024-09-20 18:47:57,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:57,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:57,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-20 18:47:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 18:47:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 18:47:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-20 18:47:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 18:47:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-20 18:47:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 18:47:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-20 18:47:58,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 18:47:58,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-20 18:47:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 18:47:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-20 18:47:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 18:47:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-20 18:47:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-20 18:47:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-20 18:47:58,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-20 18:47:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-20 18:47:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-20 18:47:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-20 18:47:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-20 18:47:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-20 18:47:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-20 18:47:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-20 18:47:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-20 18:47:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-20 18:47:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-20 18:47:58,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-20 18:47:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-20 18:47:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-20 18:47:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 525 proven. 1396 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-20 18:47:58,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:58,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725369925] [2024-09-20 18:47:58,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725369925] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:58,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033286775] [2024-09-20 18:47:58,247 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:47:58,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:58,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:58,249 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:58,250 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-09-20 18:47:58,358 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2024-09-20 18:47:58,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:58,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-09-20 18:47:58,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:58,499 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 556 proven. 1365 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-20 18:47:58,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:59,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 556 proven. 1365 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-20 18:47:59,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033286775] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:59,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:59,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 39 [2024-09-20 18:47:59,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472654377] [2024-09-20 18:47:59,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:59,304 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-09-20 18:47:59,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:59,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-09-20 18:47:59,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=574, Invalid=908, Unknown=0, NotChecked=0, Total=1482 [2024-09-20 18:47:59,305 INFO L87 Difference]: Start difference. First operand 256 states and 257 transitions. Second operand has 39 states, 39 states have (on average 2.717948717948718) internal successors, (106), 37 states have internal predecessors, (106), 32 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-20 18:47:59,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:59,475 INFO L93 Difference]: Finished difference Result 269 states and 271 transitions. [2024-09-20 18:47:59,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-20 18:47:59,476 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.717948717948718) internal successors, (106), 37 states have internal predecessors, (106), 32 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Word has length 253 [2024-09-20 18:47:59,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:59,477 INFO L225 Difference]: With dead ends: 269 [2024-09-20 18:47:59,477 INFO L226 Difference]: Without dead ends: 267 [2024-09-20 18:47:59,478 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 534 SyntacticMatches, 62 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1327 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=580, Invalid=980, Unknown=0, NotChecked=0, Total=1560 [2024-09-20 18:47:59,478 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:59,478 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 113 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:47:59,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-09-20 18:47:59,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 263. [2024-09-20 18:47:59,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 195 states have (on average 1.0102564102564102) internal successors, (197), 196 states have internal predecessors, (197), 34 states have call successors, (34), 34 states have call predecessors, (34), 33 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-20 18:47:59,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 264 transitions. [2024-09-20 18:47:59,493 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 264 transitions. Word has length 253 [2024-09-20 18:47:59,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:59,493 INFO L474 AbstractCegarLoop]: Abstraction has 263 states and 264 transitions. [2024-09-20 18:47:59,493 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.717948717948718) internal successors, (106), 37 states have internal predecessors, (106), 32 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-20 18:47:59,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:59,494 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 264 transitions. [2024-09-20 18:47:59,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-09-20 18:47:59,494 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:59,494 INFO L216 NwaCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:59,508 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2024-09-20 18:47:59,695 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,62 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:59,695 INFO L399 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:59,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:59,696 INFO L85 PathProgramCache]: Analyzing trace with hash 38845964, now seen corresponding path program 61 times [2024-09-20 18:47:59,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:59,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245290258] [2024-09-20 18:47:59,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:59,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:01,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:48:01,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:01,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-20 18:48:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:01,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 18:48:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:01,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 18:48:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:01,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-20 18:48:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:01,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 18:48:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:01,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-20 18:48:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:01,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 18:48:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:01,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-20 18:48:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:01,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 18:48:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:01,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-20 18:48:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:01,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 18:48:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:01,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-20 18:48:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:01,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 18:48:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:01,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-20 18:48:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:01,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-20 18:48:01,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:01,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-20 18:48:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:01,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-20 18:48:01,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:01,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-20 18:48:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:01,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-20 18:48:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:01,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-20 18:48:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:01,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-20 18:48:01,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:01,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-20 18:48:01,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:01,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-20 18:48:01,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:01,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-20 18:48:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:01,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-20 18:48:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:01,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-20 18:48:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:01,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-20 18:48:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:01,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-20 18:48:01,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:01,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-20 18:48:01,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:01,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-20 18:48:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:01,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-20 18:48:01,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:01,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1428 proven. 587 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-20 18:48:01,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:48:01,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245290258] [2024-09-20 18:48:01,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245290258] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:48:01,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934371871] [2024-09-20 18:48:01,212 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:48:01,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:01,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:48:01,214 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:48:01,215 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-09-20 18:48:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:01,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-09-20 18:48:01,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:48:02,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-20 18:48:02,841 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:48:04,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-20 18:48:04,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934371871] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:48:04,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:48:04,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67, 67] total 101 [2024-09-20 18:48:04,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644372500] [2024-09-20 18:48:04,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:48:04,097 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2024-09-20 18:48:04,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:48:04,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2024-09-20 18:48:04,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2282, Invalid=7818, Unknown=0, NotChecked=0, Total=10100 [2024-09-20 18:48:04,099 INFO L87 Difference]: Start difference. First operand 263 states and 264 transitions. Second operand has 101 states, 101 states have (on average 1.7128712871287128) internal successors, (173), 101 states have internal predecessors, (173), 65 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2024-09-20 18:48:04,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:48:04,551 INFO L93 Difference]: Finished difference Result 368 states and 401 transitions. [2024-09-20 18:48:04,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-09-20 18:48:04,551 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.7128712871287128) internal successors, (173), 101 states have internal predecessors, (173), 65 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) Word has length 260 [2024-09-20 18:48:04,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:48:04,553 INFO L225 Difference]: With dead ends: 368 [2024-09-20 18:48:04,553 INFO L226 Difference]: Without dead ends: 264 [2024-09-20 18:48:04,554 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 488 SyntacticMatches, 63 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6541 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2282, Invalid=7818, Unknown=0, NotChecked=0, Total=10100 [2024-09-20 18:48:04,555 INFO L434 NwaCegarLoop]: 72 mSDtfsCounter, 0 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 18:48:04,555 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 672 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1053 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 18:48:04,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-09-20 18:48:04,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2024-09-20 18:48:04,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 196 states have (on average 1.010204081632653) internal successors, (198), 197 states have internal predecessors, (198), 34 states have call successors, (34), 34 states have call predecessors, (34), 33 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-20 18:48:04,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 265 transitions. [2024-09-20 18:48:04,587 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 265 transitions. Word has length 260 [2024-09-20 18:48:04,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:48:04,587 INFO L474 AbstractCegarLoop]: Abstraction has 264 states and 265 transitions. [2024-09-20 18:48:04,588 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.7128712871287128) internal successors, (173), 101 states have internal predecessors, (173), 65 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2024-09-20 18:48:04,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:04,588 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 265 transitions. [2024-09-20 18:48:04,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-09-20 18:48:04,590 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:48:04,590 INFO L216 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:48:04,604 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2024-09-20 18:48:04,793 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,63 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:04,793 INFO L399 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:48:04,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:04,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1931879192, now seen corresponding path program 62 times [2024-09-20 18:48:04,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:48:04,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149180095] [2024-09-20 18:48:04,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:48:04,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:48:04,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:05,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:48:05,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:05,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 18:48:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:05,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-20 18:48:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:05,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-20 18:48:05,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:05,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 18:48:05,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:05,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 18:48:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:05,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 18:48:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:05,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-20 18:48:05,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:05,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 18:48:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:05,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-20 18:48:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:05,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 18:48:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:05,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-20 18:48:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:05,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 18:48:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:05,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-20 18:48:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:05,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 18:48:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:05,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-20 18:48:05,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:05,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-20 18:48:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:05,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-20 18:48:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:05,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-20 18:48:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:05,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-20 18:48:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:05,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 18:48:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:05,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-20 18:48:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:05,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-20 18:48:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:05,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-20 18:48:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:05,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-20 18:48:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:05,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-20 18:48:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:05,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-20 18:48:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:05,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-20 18:48:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:05,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-20 18:48:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:05,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-20 18:48:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:05,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-20 18:48:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:05,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-20 18:48:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:05,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 558 proven. 1489 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-20 18:48:05,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:48:05,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149180095] [2024-09-20 18:48:05,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149180095] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:48:05,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485445046] [2024-09-20 18:48:05,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:48:05,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:05,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:48:05,678 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:48:05,679 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-09-20 18:48:05,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:48:05,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:48:05,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-09-20 18:48:05,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:48:05,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 590 proven. 1457 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-20 18:48:05,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:48:06,842 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 590 proven. 1457 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-20 18:48:06,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485445046] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:48:06,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:48:06,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 40 [2024-09-20 18:48:06,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809971337] [2024-09-20 18:48:06,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:48:06,843 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-20 18:48:06,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:48:06,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-20 18:48:06,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=608, Invalid=952, Unknown=0, NotChecked=0, Total=1560 [2024-09-20 18:48:06,844 INFO L87 Difference]: Start difference. First operand 264 states and 265 transitions. Second operand has 40 states, 40 states have (on average 2.725) internal successors, (109), 38 states have internal predecessors, (109), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-20 18:48:07,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:48:07,022 INFO L93 Difference]: Finished difference Result 277 states and 279 transitions. [2024-09-20 18:48:07,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-20 18:48:07,023 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.725) internal successors, (109), 38 states have internal predecessors, (109), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 261 [2024-09-20 18:48:07,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:48:07,024 INFO L225 Difference]: With dead ends: 277 [2024-09-20 18:48:07,025 INFO L226 Difference]: Without dead ends: 275 [2024-09-20 18:48:07,025 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 549 SyntacticMatches, 66 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1468 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=614, Invalid=1026, Unknown=0, NotChecked=0, Total=1640 [2024-09-20 18:48:07,025 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:48:07,025 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 97 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:48:07,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-09-20 18:48:07,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 271. [2024-09-20 18:48:07,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 201 states have (on average 1.0099502487562189) internal successors, (203), 202 states have internal predecessors, (203), 35 states have call successors, (35), 35 states have call predecessors, (35), 34 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-20 18:48:07,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 272 transitions. [2024-09-20 18:48:07,044 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 272 transitions. Word has length 261 [2024-09-20 18:48:07,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:48:07,044 INFO L474 AbstractCegarLoop]: Abstraction has 271 states and 272 transitions. [2024-09-20 18:48:07,044 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.725) internal successors, (109), 38 states have internal predecessors, (109), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-20 18:48:07,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:07,044 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 272 transitions. [2024-09-20 18:48:07,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-09-20 18:48:07,045 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:48:07,045 INFO L216 NwaCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:48:07,058 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2024-09-20 18:48:07,246 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2024-09-20 18:48:07,246 INFO L399 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:48:07,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:07,247 INFO L85 PathProgramCache]: Analyzing trace with hash -786686197, now seen corresponding path program 63 times [2024-09-20 18:48:07,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:48:07,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368901606] [2024-09-20 18:48:07,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:48:07,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:48:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:08,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:48:08,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:08,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 18:48:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:08,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-20 18:48:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:08,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-20 18:48:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:08,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 18:48:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:08,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 18:48:08,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:08,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 18:48:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:08,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-20 18:48:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:08,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 18:48:08,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:08,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-20 18:48:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:08,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 18:48:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:08,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-20 18:48:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:08,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 18:48:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:08,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-20 18:48:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:08,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 18:48:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:08,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-20 18:48:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:08,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-20 18:48:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:08,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-20 18:48:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:08,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-20 18:48:08,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:08,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-20 18:48:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:08,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 18:48:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:08,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-20 18:48:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:08,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-20 18:48:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:08,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-20 18:48:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:08,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-20 18:48:08,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:08,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-20 18:48:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:08,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-20 18:48:08,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:08,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-20 18:48:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:08,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-20 18:48:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:08,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-20 18:48:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:08,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-20 18:48:08,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:08,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-20 18:48:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:08,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-20 18:48:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:08,737 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1522 proven. 622 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-20 18:48:08,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:48:08,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368901606] [2024-09-20 18:48:08,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368901606] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:48:08,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863047394] [2024-09-20 18:48:08,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:48:08,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:08,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:48:08,739 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:48:08,740 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-09-20 18:48:08,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2024-09-20 18:48:08,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:48:08,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-09-20 18:48:08,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:48:10,161 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-20 18:48:10,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:48:11,204 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-20 18:48:11,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863047394] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:48:11,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:48:11,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69, 69] total 104 [2024-09-20 18:48:11,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363737928] [2024-09-20 18:48:11,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:48:11,206 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2024-09-20 18:48:11,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:48:11,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2024-09-20 18:48:11,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2419, Invalid=8293, Unknown=0, NotChecked=0, Total=10712 [2024-09-20 18:48:11,208 INFO L87 Difference]: Start difference. First operand 271 states and 272 transitions. Second operand has 104 states, 104 states have (on average 1.7115384615384615) internal successors, (178), 104 states have internal predecessors, (178), 67 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-09-20 18:48:11,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:48:11,573 INFO L93 Difference]: Finished difference Result 379 states and 413 transitions. [2024-09-20 18:48:11,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-09-20 18:48:11,574 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 1.7115384615384615) internal successors, (178), 104 states have internal predecessors, (178), 67 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) Word has length 268 [2024-09-20 18:48:11,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:48:11,575 INFO L225 Difference]: With dead ends: 379 [2024-09-20 18:48:11,575 INFO L226 Difference]: Without dead ends: 272 [2024-09-20 18:48:11,576 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 503 SyntacticMatches, 65 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6944 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2419, Invalid=8293, Unknown=0, NotChecked=0, Total=10712 [2024-09-20 18:48:11,577 INFO L434 NwaCegarLoop]: 74 mSDtfsCounter, 0 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 18:48:11,578 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 610 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 972 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 18:48:11,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-09-20 18:48:11,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2024-09-20 18:48:11,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 202 states have (on average 1.00990099009901) internal successors, (204), 203 states have internal predecessors, (204), 35 states have call successors, (35), 35 states have call predecessors, (35), 34 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-20 18:48:11,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 273 transitions. [2024-09-20 18:48:11,600 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 273 transitions. Word has length 268 [2024-09-20 18:48:11,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:48:11,601 INFO L474 AbstractCegarLoop]: Abstraction has 272 states and 273 transitions. [2024-09-20 18:48:11,601 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 1.7115384615384615) internal successors, (178), 104 states have internal predecessors, (178), 67 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-09-20 18:48:11,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:11,601 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 273 transitions. [2024-09-20 18:48:11,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-09-20 18:48:11,606 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:48:11,606 INFO L216 NwaCegarLoop]: trace histogram [33, 33, 33, 33, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:48:11,630 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2024-09-20 18:48:11,806 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,65 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:11,807 INFO L399 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:48:11,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:11,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1879984105, now seen corresponding path program 64 times [2024-09-20 18:48:11,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:48:11,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644190509] [2024-09-20 18:48:11,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:48:11,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:48:11,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:12,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:48:12,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:12,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 18:48:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:12,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-20 18:48:12,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:12,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 18:48:12,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:12,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 18:48:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:12,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 18:48:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:12,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 18:48:12,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:12,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:48:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:12,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 18:48:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:12,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 18:48:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:12,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-20 18:48:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:12,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 18:48:12,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:12,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-20 18:48:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:12,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 18:48:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:12,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-20 18:48:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:12,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 18:48:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:12,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-20 18:48:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:12,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 18:48:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:12,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-20 18:48:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:12,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-20 18:48:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:12,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-20 18:48:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:12,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-20 18:48:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:12,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-20 18:48:12,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:12,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-20 18:48:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:12,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-20 18:48:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:12,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-20 18:48:12,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:12,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-20 18:48:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:12,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-20 18:48:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:12,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-20 18:48:12,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:12,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-20 18:48:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:12,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-20 18:48:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:12,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-20 18:48:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:12,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-20 18:48:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:12,665 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 592 proven. 1585 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-20 18:48:12,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:48:12,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644190509] [2024-09-20 18:48:12,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644190509] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:48:12,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322831437] [2024-09-20 18:48:12,666 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:48:12,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:12,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:48:12,667 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:48:12,668 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-09-20 18:48:12,758 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:48:12,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:48:12,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-09-20 18:48:12,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:48:12,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 625 proven. 1552 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-20 18:48:12,918 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:48:13,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 625 proven. 1552 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-20 18:48:13,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322831437] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:48:13,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:48:13,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 41 [2024-09-20 18:48:13,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781291862] [2024-09-20 18:48:13,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:48:13,850 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-20 18:48:13,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:48:13,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-20 18:48:13,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=643, Invalid=997, Unknown=0, NotChecked=0, Total=1640 [2024-09-20 18:48:13,851 INFO L87 Difference]: Start difference. First operand 272 states and 273 transitions. Second operand has 41 states, 41 states have (on average 2.731707317073171) internal successors, (112), 39 states have internal predecessors, (112), 34 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-20 18:48:14,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:48:14,035 INFO L93 Difference]: Finished difference Result 285 states and 287 transitions. [2024-09-20 18:48:14,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-20 18:48:14,035 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.731707317073171) internal successors, (112), 39 states have internal predecessors, (112), 34 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Word has length 269 [2024-09-20 18:48:14,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:48:14,037 INFO L225 Difference]: With dead ends: 285 [2024-09-20 18:48:14,037 INFO L226 Difference]: Without dead ends: 283 [2024-09-20 18:48:14,037 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 568 SyntacticMatches, 66 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=649, Invalid=1073, Unknown=0, NotChecked=0, Total=1722 [2024-09-20 18:48:14,037 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:48:14,038 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 108 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:48:14,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-09-20 18:48:14,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 279. [2024-09-20 18:48:14,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 207 states have (on average 1.0096618357487923) internal successors, (209), 208 states have internal predecessors, (209), 36 states have call successors, (36), 36 states have call predecessors, (36), 35 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-20 18:48:14,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 280 transitions. [2024-09-20 18:48:14,055 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 280 transitions. Word has length 269 [2024-09-20 18:48:14,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:48:14,056 INFO L474 AbstractCegarLoop]: Abstraction has 279 states and 280 transitions. [2024-09-20 18:48:14,056 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.731707317073171) internal successors, (112), 39 states have internal predecessors, (112), 34 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-20 18:48:14,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:14,056 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 280 transitions. [2024-09-20 18:48:14,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-09-20 18:48:14,057 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:48:14,057 INFO L216 NwaCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:48:14,070 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2024-09-20 18:48:14,261 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,66 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:14,262 INFO L399 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:48:14,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:14,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1898822956, now seen corresponding path program 65 times [2024-09-20 18:48:14,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:48:14,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588011458] [2024-09-20 18:48:14,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:48:14,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:48:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:16,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:48:16,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:16,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 18:48:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:16,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-20 18:48:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:16,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 18:48:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:16,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 18:48:16,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:16,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 18:48:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:16,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 18:48:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:16,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:48:16,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:16,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 18:48:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:16,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 18:48:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:16,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-20 18:48:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:16,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 18:48:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:16,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-20 18:48:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:16,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 18:48:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:16,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-20 18:48:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:16,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 18:48:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:16,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-20 18:48:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:16,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 18:48:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:16,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-20 18:48:16,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:16,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-20 18:48:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:16,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-20 18:48:16,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:16,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-20 18:48:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:16,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-20 18:48:16,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:16,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-20 18:48:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:16,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-20 18:48:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:16,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-20 18:48:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:16,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-20 18:48:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:16,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-20 18:48:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:16,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-20 18:48:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:16,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-20 18:48:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:16,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-20 18:48:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:16,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-20 18:48:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:16,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-20 18:48:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:16,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-20 18:48:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:16,039 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1619 proven. 658 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-20 18:48:16,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:48:16,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588011458] [2024-09-20 18:48:16,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588011458] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:48:16,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367212714] [2024-09-20 18:48:16,040 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:48:16,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:16,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:48:16,042 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:48:16,043 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-09-20 18:48:16,151 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2024-09-20 18:48:16,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:48:16,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-09-20 18:48:16,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:48:17,885 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-20 18:48:17,885 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:48:19,395 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-20 18:48:19,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367212714] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:48:19,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:48:19,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71, 71] total 107 [2024-09-20 18:48:19,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239988744] [2024-09-20 18:48:19,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:48:19,396 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2024-09-20 18:48:19,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:48:19,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2024-09-20 18:48:19,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2560, Invalid=8782, Unknown=0, NotChecked=0, Total=11342 [2024-09-20 18:48:19,398 INFO L87 Difference]: Start difference. First operand 279 states and 280 transitions. Second operand has 107 states, 107 states have (on average 1.7102803738317758) internal successors, (183), 107 states have internal predecessors, (183), 69 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-09-20 18:48:19,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:48:19,790 INFO L93 Difference]: Finished difference Result 390 states and 425 transitions. [2024-09-20 18:48:19,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-09-20 18:48:19,791 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 1.7102803738317758) internal successors, (183), 107 states have internal predecessors, (183), 69 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) Word has length 276 [2024-09-20 18:48:19,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:48:19,793 INFO L225 Difference]: With dead ends: 390 [2024-09-20 18:48:19,793 INFO L226 Difference]: Without dead ends: 280 [2024-09-20 18:48:19,793 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 690 GetRequests, 518 SyntacticMatches, 67 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7359 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2560, Invalid=8782, Unknown=0, NotChecked=0, Total=11342 [2024-09-20 18:48:19,794 INFO L434 NwaCegarLoop]: 76 mSDtfsCounter, 0 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 18:48:19,794 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 701 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 18:48:19,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-09-20 18:48:19,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2024-09-20 18:48:19,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 208 states have (on average 1.0096153846153846) internal successors, (210), 209 states have internal predecessors, (210), 36 states have call successors, (36), 36 states have call predecessors, (36), 35 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-20 18:48:19,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 281 transitions. [2024-09-20 18:48:19,813 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 281 transitions. Word has length 276 [2024-09-20 18:48:19,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:48:19,813 INFO L474 AbstractCegarLoop]: Abstraction has 280 states and 281 transitions. [2024-09-20 18:48:19,813 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 1.7102803738317758) internal successors, (183), 107 states have internal predecessors, (183), 69 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-09-20 18:48:19,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:19,813 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 281 transitions. [2024-09-20 18:48:19,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-09-20 18:48:19,814 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:48:19,814 INFO L216 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:48:19,828 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2024-09-20 18:48:20,018 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2024-09-20 18:48:20,018 INFO L399 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:48:20,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:20,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1687128632, now seen corresponding path program 66 times [2024-09-20 18:48:20,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:48:20,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87107018] [2024-09-20 18:48:20,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:48:20,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:48:20,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:20,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:48:20,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:20,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 18:48:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:20,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 18:48:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:20,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 18:48:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:20,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 18:48:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:20,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 18:48:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:20,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 18:48:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:20,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-20 18:48:20,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:20,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 18:48:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:20,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 18:48:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:20,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 18:48:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:20,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-20 18:48:20,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:20,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 18:48:20,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:20,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-20 18:48:20,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:20,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 18:48:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:20,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-20 18:48:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:20,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 18:48:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:20,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-20 18:48:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:20,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-20 18:48:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:20,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-20 18:48:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:20,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-20 18:48:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:20,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-20 18:48:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:20,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-20 18:48:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:20,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-20 18:48:20,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:20,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-20 18:48:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:20,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-20 18:48:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:20,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-20 18:48:20,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:20,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-20 18:48:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:20,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-20 18:48:20,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:20,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-20 18:48:20,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:20,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-20 18:48:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:20,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-20 18:48:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:20,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-20 18:48:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:20,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-20 18:48:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:20,886 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 627 proven. 1684 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-20 18:48:20,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:48:20,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87107018] [2024-09-20 18:48:20,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87107018] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:48:20,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893316070] [2024-09-20 18:48:20,886 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:48:20,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:20,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:48:20,888 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:48:20,901 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2024-09-20 18:48:21,022 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2024-09-20 18:48:21,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:48:21,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-09-20 18:48:21,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:48:21,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 661 proven. 1650 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-20 18:48:21,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:48:22,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 661 proven. 1650 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-20 18:48:22,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893316070] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:48:22,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:48:22,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 42 [2024-09-20 18:48:22,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955566772] [2024-09-20 18:48:22,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:48:22,165 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-20 18:48:22,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:48:22,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-20 18:48:22,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=679, Invalid=1043, Unknown=0, NotChecked=0, Total=1722 [2024-09-20 18:48:22,166 INFO L87 Difference]: Start difference. First operand 280 states and 281 transitions. Second operand has 42 states, 42 states have (on average 2.738095238095238) internal successors, (115), 40 states have internal predecessors, (115), 35 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-20 18:48:22,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:48:22,350 INFO L93 Difference]: Finished difference Result 293 states and 295 transitions. [2024-09-20 18:48:22,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-09-20 18:48:22,351 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.738095238095238) internal successors, (115), 40 states have internal predecessors, (115), 35 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 277 [2024-09-20 18:48:22,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:48:22,352 INFO L225 Difference]: With dead ends: 293 [2024-09-20 18:48:22,352 INFO L226 Difference]: Without dead ends: 291 [2024-09-20 18:48:22,353 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 585 SyntacticMatches, 68 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1558 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=685, Invalid=1121, Unknown=0, NotChecked=0, Total=1806 [2024-09-20 18:48:22,353 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:48:22,353 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 99 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:48:22,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-09-20 18:48:22,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 287. [2024-09-20 18:48:22,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 213 states have (on average 1.0093896713615023) internal successors, (215), 214 states have internal predecessors, (215), 37 states have call successors, (37), 37 states have call predecessors, (37), 36 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-20 18:48:22,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 288 transitions. [2024-09-20 18:48:22,371 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 288 transitions. Word has length 277 [2024-09-20 18:48:22,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:48:22,371 INFO L474 AbstractCegarLoop]: Abstraction has 287 states and 288 transitions. [2024-09-20 18:48:22,371 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.738095238095238) internal successors, (115), 40 states have internal predecessors, (115), 35 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-20 18:48:22,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:22,371 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 288 transitions. [2024-09-20 18:48:22,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-09-20 18:48:22,372 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:48:22,372 INFO L216 NwaCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:48:22,386 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2024-09-20 18:48:22,576 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2024-09-20 18:48:22,577 INFO L399 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:48:22,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:22,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1127844885, now seen corresponding path program 67 times [2024-09-20 18:48:22,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:48:22,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915068527] [2024-09-20 18:48:22,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:48:22,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:48:22,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:48:24,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 18:48:24,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 18:48:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 18:48:24,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 18:48:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 18:48:24,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 18:48:24,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-20 18:48:24,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 18:48:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 18:48:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 18:48:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-20 18:48:24,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 18:48:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-20 18:48:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 18:48:24,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-20 18:48:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 18:48:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-20 18:48:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-20 18:48:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-20 18:48:24,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-20 18:48:24,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-20 18:48:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-20 18:48:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-20 18:48:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-20 18:48:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-20 18:48:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-20 18:48:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-20 18:48:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-20 18:48:24,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-20 18:48:24,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-20 18:48:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-20 18:48:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-20 18:48:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-20 18:48:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-20 18:48:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,491 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1719 proven. 695 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-20 18:48:24,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:48:24,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915068527] [2024-09-20 18:48:24,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915068527] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:48:24,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636886518] [2024-09-20 18:48:24,491 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:48:24,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:24,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:48:24,493 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:48:24,493 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2024-09-20 18:48:24,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-09-20 18:48:24,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:48:26,411 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-20 18:48:26,411 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:48:27,919 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-20 18:48:27,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636886518] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:48:27,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:48:27,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73, 73] total 110 [2024-09-20 18:48:27,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32435336] [2024-09-20 18:48:27,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:48:27,920 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2024-09-20 18:48:27,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:48:27,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2024-09-20 18:48:27,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2705, Invalid=9285, Unknown=0, NotChecked=0, Total=11990 [2024-09-20 18:48:27,922 INFO L87 Difference]: Start difference. First operand 287 states and 288 transitions. Second operand has 110 states, 110 states have (on average 1.709090909090909) internal successors, (188), 110 states have internal predecessors, (188), 71 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2024-09-20 18:48:28,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:48:28,403 INFO L93 Difference]: Finished difference Result 401 states and 437 transitions. [2024-09-20 18:48:28,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-09-20 18:48:28,404 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 1.709090909090909) internal successors, (188), 110 states have internal predecessors, (188), 71 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) Word has length 284 [2024-09-20 18:48:28,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:48:28,405 INFO L225 Difference]: With dead ends: 401 [2024-09-20 18:48:28,406 INFO L226 Difference]: Without dead ends: 288 [2024-09-20 18:48:28,406 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 710 GetRequests, 533 SyntacticMatches, 69 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7786 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2705, Invalid=9285, Unknown=0, NotChecked=0, Total=11990 [2024-09-20 18:48:28,407 INFO L434 NwaCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 18:48:28,407 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 804 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 18:48:28,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-09-20 18:48:28,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2024-09-20 18:48:28,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 214 states have (on average 1.0093457943925233) internal successors, (216), 215 states have internal predecessors, (216), 37 states have call successors, (37), 37 states have call predecessors, (37), 36 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-20 18:48:28,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 289 transitions. [2024-09-20 18:48:28,424 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 289 transitions. Word has length 284 [2024-09-20 18:48:28,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:48:28,424 INFO L474 AbstractCegarLoop]: Abstraction has 288 states and 289 transitions. [2024-09-20 18:48:28,424 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 1.709090909090909) internal successors, (188), 110 states have internal predecessors, (188), 71 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2024-09-20 18:48:28,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:28,424 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 289 transitions. [2024-09-20 18:48:28,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2024-09-20 18:48:28,425 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:48:28,425 INFO L216 NwaCegarLoop]: trace histogram [35, 35, 35, 35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:48:28,437 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2024-09-20 18:48:28,629 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-09-20 18:48:28,630 INFO L399 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:48:28,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:28,630 INFO L85 PathProgramCache]: Analyzing trace with hash 2134930679, now seen corresponding path program 68 times [2024-09-20 18:48:28,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:48:28,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348173159] [2024-09-20 18:48:28,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:48:28,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:48:28,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:29,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:48:29,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:29,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 18:48:29,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:29,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 18:48:29,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:29,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 18:48:29,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:29,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 18:48:29,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:29,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 18:48:29,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:29,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-20 18:48:29,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:29,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 18:48:29,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:29,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-20 18:48:29,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:29,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 18:48:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:29,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 18:48:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:29,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 18:48:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:29,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-20 18:48:29,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:29,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-20 18:48:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:29,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-20 18:48:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:29,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-20 18:48:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:29,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-20 18:48:29,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:29,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-20 18:48:29,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:29,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-20 18:48:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:29,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-20 18:48:29,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:29,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-20 18:48:29,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:29,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-20 18:48:29,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:29,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-20 18:48:29,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:29,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-20 18:48:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:29,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-20 18:48:29,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:29,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-20 18:48:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:29,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-20 18:48:29,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:29,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-20 18:48:29,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:29,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-20 18:48:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:29,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-20 18:48:29,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:29,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-20 18:48:29,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:29,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-20 18:48:29,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:29,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-20 18:48:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:29,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-20 18:48:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:29,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-20 18:48:29,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:29,713 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 663 proven. 1786 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-20 18:48:29,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:48:29,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348173159] [2024-09-20 18:48:29,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348173159] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:48:29,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501501440] [2024-09-20 18:48:29,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:48:29,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:29,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:48:29,715 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:48:29,721 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2024-09-20 18:48:29,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:48:29,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:48:29,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-09-20 18:48:29,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:48:29,958 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 698 proven. 1751 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-20 18:48:29,958 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:48:30,779 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 698 proven. 1751 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-20 18:48:30,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501501440] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:48:30,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:48:30,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 43 [2024-09-20 18:48:30,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786418409] [2024-09-20 18:48:30,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:48:30,780 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-09-20 18:48:30,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:48:30,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-09-20 18:48:30,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=716, Invalid=1090, Unknown=0, NotChecked=0, Total=1806 [2024-09-20 18:48:30,786 INFO L87 Difference]: Start difference. First operand 288 states and 289 transitions. Second operand has 43 states, 43 states have (on average 2.744186046511628) internal successors, (118), 41 states have internal predecessors, (118), 36 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-20 18:48:30,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:48:30,943 INFO L93 Difference]: Finished difference Result 301 states and 303 transitions. [2024-09-20 18:48:30,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-20 18:48:30,943 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.744186046511628) internal successors, (118), 41 states have internal predecessors, (118), 36 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Word has length 285 [2024-09-20 18:48:30,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:48:30,945 INFO L225 Difference]: With dead ends: 301 [2024-09-20 18:48:30,945 INFO L226 Difference]: Without dead ends: 299 [2024-09-20 18:48:30,945 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 600 SyntacticMatches, 72 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1711 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=722, Invalid=1170, Unknown=0, NotChecked=0, Total=1892 [2024-09-20 18:48:30,945 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:48:30,945 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 107 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:48:30,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-09-20 18:48:30,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 295. [2024-09-20 18:48:30,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 219 states have (on average 1.0091324200913243) internal successors, (221), 220 states have internal predecessors, (221), 38 states have call successors, (38), 38 states have call predecessors, (38), 37 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-20 18:48:30,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 296 transitions. [2024-09-20 18:48:30,963 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 296 transitions. Word has length 285 [2024-09-20 18:48:30,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:48:30,964 INFO L474 AbstractCegarLoop]: Abstraction has 295 states and 296 transitions. [2024-09-20 18:48:30,964 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.744186046511628) internal successors, (118), 41 states have internal predecessors, (118), 36 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-20 18:48:30,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:30,964 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 296 transitions. [2024-09-20 18:48:30,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2024-09-20 18:48:30,965 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:48:30,965 INFO L216 NwaCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:48:30,978 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2024-09-20 18:48:31,168 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,70 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:31,169 INFO L399 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:48:31,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:31,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1877294004, now seen corresponding path program 69 times [2024-09-20 18:48:31,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:48:31,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532025257] [2024-09-20 18:48:31,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:48:31,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:48:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:48:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 18:48:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 18:48:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 18:48:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 18:48:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 18:48:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-20 18:48:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 18:48:33,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-20 18:48:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 18:48:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 18:48:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 18:48:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-20 18:48:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-20 18:48:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-20 18:48:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-20 18:48:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-20 18:48:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-20 18:48:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-20 18:48:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-20 18:48:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-20 18:48:33,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-20 18:48:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-20 18:48:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-20 18:48:33,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-20 18:48:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-20 18:48:33,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-20 18:48:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-20 18:48:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-20 18:48:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-20 18:48:33,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-20 18:48:33,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-20 18:48:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-20 18:48:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-20 18:48:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-20 18:48:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-20 18:48:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:33,141 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1822 proven. 733 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-20 18:48:33,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:48:33,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532025257] [2024-09-20 18:48:33,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532025257] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:48:33,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076786336] [2024-09-20 18:48:33,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:48:33,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:33,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:48:33,142 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:48:33,150 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2024-09-20 18:48:33,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2024-09-20 18:48:33,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:48:33,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-09-20 18:48:33,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:48:35,159 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-20 18:48:35,160 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:48:36,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-20 18:48:36,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076786336] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:48:36,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:48:36,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75, 75] total 113 [2024-09-20 18:48:36,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467321355] [2024-09-20 18:48:36,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:48:36,665 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2024-09-20 18:48:36,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:48:36,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2024-09-20 18:48:36,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2854, Invalid=9802, Unknown=0, NotChecked=0, Total=12656 [2024-09-20 18:48:36,667 INFO L87 Difference]: Start difference. First operand 295 states and 296 transitions. Second operand has 113 states, 113 states have (on average 1.7079646017699115) internal successors, (193), 113 states have internal predecessors, (193), 73 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-09-20 18:48:37,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:48:37,179 INFO L93 Difference]: Finished difference Result 412 states and 449 transitions. [2024-09-20 18:48:37,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-09-20 18:48:37,180 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 1.7079646017699115) internal successors, (193), 113 states have internal predecessors, (193), 73 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Word has length 292 [2024-09-20 18:48:37,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:48:37,182 INFO L225 Difference]: With dead ends: 412 [2024-09-20 18:48:37,182 INFO L226 Difference]: Without dead ends: 296 [2024-09-20 18:48:37,183 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 548 SyntacticMatches, 71 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8225 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2854, Invalid=9802, Unknown=0, NotChecked=0, Total=12656 [2024-09-20 18:48:37,183 INFO L434 NwaCegarLoop]: 80 mSDtfsCounter, 0 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 18:48:37,183 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 652 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 18:48:37,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-09-20 18:48:37,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2024-09-20 18:48:37,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 220 states have (on average 1.009090909090909) internal successors, (222), 221 states have internal predecessors, (222), 38 states have call successors, (38), 38 states have call predecessors, (38), 37 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-20 18:48:37,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 297 transitions. [2024-09-20 18:48:37,202 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 297 transitions. Word has length 292 [2024-09-20 18:48:37,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:48:37,202 INFO L474 AbstractCegarLoop]: Abstraction has 296 states and 297 transitions. [2024-09-20 18:48:37,202 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 1.7079646017699115) internal successors, (193), 113 states have internal predecessors, (193), 73 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-09-20 18:48:37,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:37,202 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 297 transitions. [2024-09-20 18:48:37,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2024-09-20 18:48:37,203 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:48:37,203 INFO L216 NwaCegarLoop]: trace histogram [36, 36, 36, 36, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:48:37,220 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2024-09-20 18:48:37,407 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,71 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:37,408 INFO L399 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:48:37,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:37,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1882782040, now seen corresponding path program 70 times [2024-09-20 18:48:37,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:48:37,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596622626] [2024-09-20 18:48:37,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:48:37,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:48:37,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:48:38,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-20 18:48:38,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 18:48:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-20 18:48:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 18:48:38,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-20 18:48:38,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 18:48:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-20 18:48:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 18:48:38,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-20 18:48:38,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 18:48:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-20 18:48:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 18:48:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-20 18:48:38,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-20 18:48:38,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-20 18:48:38,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-20 18:48:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-20 18:48:38,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-20 18:48:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-20 18:48:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-20 18:48:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-20 18:48:38,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-20 18:48:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-20 18:48:38,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-20 18:48:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-20 18:48:38,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-20 18:48:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-20 18:48:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-20 18:48:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-20 18:48:38,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-20 18:48:38,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-20 18:48:38,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-20 18:48:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-20 18:48:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-20 18:48:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-20 18:48:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,517 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 700 proven. 1891 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-20 18:48:38,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:48:38,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596622626] [2024-09-20 18:48:38,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596622626] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:48:38,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812989274] [2024-09-20 18:48:38,518 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:48:38,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:38,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:48:38,519 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:48:38,520 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2024-09-20 18:48:38,630 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:48:38,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:48:38,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-09-20 18:48:38,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:48:38,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 736 proven. 1855 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-20 18:48:38,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:48:39,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 736 proven. 1855 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-20 18:48:39,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812989274] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:48:39,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:48:39,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 44 [2024-09-20 18:48:39,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178639522] [2024-09-20 18:48:39,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:48:39,881 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-20 18:48:39,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:48:39,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-20 18:48:39,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=754, Invalid=1138, Unknown=0, NotChecked=0, Total=1892 [2024-09-20 18:48:39,882 INFO L87 Difference]: Start difference. First operand 296 states and 297 transitions. Second operand has 44 states, 44 states have (on average 2.75) internal successors, (121), 42 states have internal predecessors, (121), 37 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-20 18:48:40,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:48:40,120 INFO L93 Difference]: Finished difference Result 309 states and 311 transitions. [2024-09-20 18:48:40,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-09-20 18:48:40,120 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.75) internal successors, (121), 42 states have internal predecessors, (121), 37 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 293 [2024-09-20 18:48:40,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:48:40,122 INFO L225 Difference]: With dead ends: 309 [2024-09-20 18:48:40,122 INFO L226 Difference]: Without dead ends: 307 [2024-09-20 18:48:40,123 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 619 SyntacticMatches, 72 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1722 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=760, Invalid=1220, Unknown=0, NotChecked=0, Total=1980 [2024-09-20 18:48:40,123 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:48:40,123 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 157 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:48:40,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-09-20 18:48:40,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 303. [2024-09-20 18:48:40,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 225 states have (on average 1.008888888888889) internal successors, (227), 226 states have internal predecessors, (227), 39 states have call successors, (39), 39 states have call predecessors, (39), 38 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-20 18:48:40,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 304 transitions. [2024-09-20 18:48:40,142 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 304 transitions. Word has length 293 [2024-09-20 18:48:40,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:48:40,142 INFO L474 AbstractCegarLoop]: Abstraction has 303 states and 304 transitions. [2024-09-20 18:48:40,142 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.75) internal successors, (121), 42 states have internal predecessors, (121), 37 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-20 18:48:40,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:40,143 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 304 transitions. [2024-09-20 18:48:40,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-09-20 18:48:40,144 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:48:40,144 INFO L216 NwaCegarLoop]: trace histogram [37, 37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:48:40,157 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2024-09-20 18:48:40,344 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,72 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:40,345 INFO L399 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:48:40,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:40,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1885880117, now seen corresponding path program 71 times [2024-09-20 18:48:40,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:48:40,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125579724] [2024-09-20 18:48:40,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:48:40,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:48:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:48:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-20 18:48:42,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 18:48:42,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-20 18:48:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 18:48:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-20 18:48:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 18:48:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-20 18:48:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 18:48:42,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-20 18:48:42,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 18:48:42,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-20 18:48:42,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 18:48:42,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-20 18:48:42,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-20 18:48:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-20 18:48:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-20 18:48:42,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-20 18:48:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-20 18:48:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-20 18:48:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-20 18:48:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-20 18:48:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-20 18:48:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-20 18:48:42,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-20 18:48:42,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-20 18:48:42,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-20 18:48:42,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-20 18:48:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-20 18:48:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-20 18:48:42,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-20 18:48:42,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-20 18:48:42,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-20 18:48:42,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-20 18:48:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-20 18:48:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-20 18:48:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-20 18:48:42,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:42,439 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 1928 proven. 772 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-20 18:48:42,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:48:42,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125579724] [2024-09-20 18:48:42,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125579724] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:48:42,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666978175] [2024-09-20 18:48:42,439 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:48:42,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:42,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:48:42,441 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:48:42,442 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2024-09-20 18:48:42,585 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2024-09-20 18:48:42,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:48:42,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-09-20 18:48:42,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:48:44,607 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-20 18:48:44,607 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:48:46,255 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-20 18:48:46,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666978175] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:48:46,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:48:46,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77, 77] total 116 [2024-09-20 18:48:46,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151800863] [2024-09-20 18:48:46,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:48:46,256 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2024-09-20 18:48:46,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:48:46,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2024-09-20 18:48:46,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3007, Invalid=10333, Unknown=0, NotChecked=0, Total=13340 [2024-09-20 18:48:46,257 INFO L87 Difference]: Start difference. First operand 303 states and 304 transitions. Second operand has 116 states, 116 states have (on average 1.706896551724138) internal successors, (198), 116 states have internal predecessors, (198), 75 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2024-09-20 18:48:46,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:48:46,702 INFO L93 Difference]: Finished difference Result 423 states and 461 transitions. [2024-09-20 18:48:46,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-09-20 18:48:46,703 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 1.706896551724138) internal successors, (198), 116 states have internal predecessors, (198), 75 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) Word has length 300 [2024-09-20 18:48:46,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:48:46,705 INFO L225 Difference]: With dead ends: 423 [2024-09-20 18:48:46,705 INFO L226 Difference]: Without dead ends: 304 [2024-09-20 18:48:46,706 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 563 SyntacticMatches, 73 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8676 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=3007, Invalid=10333, Unknown=0, NotChecked=0, Total=13340 [2024-09-20 18:48:46,706 INFO L434 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 18:48:46,706 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 681 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 18:48:46,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-09-20 18:48:46,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2024-09-20 18:48:46,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 226 states have (on average 1.008849557522124) internal successors, (228), 227 states have internal predecessors, (228), 39 states have call successors, (39), 39 states have call predecessors, (39), 38 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-20 18:48:46,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 305 transitions. [2024-09-20 18:48:46,726 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 305 transitions. Word has length 300 [2024-09-20 18:48:46,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:48:46,726 INFO L474 AbstractCegarLoop]: Abstraction has 304 states and 305 transitions. [2024-09-20 18:48:46,726 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 1.706896551724138) internal successors, (198), 116 states have internal predecessors, (198), 75 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2024-09-20 18:48:46,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:46,726 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 305 transitions. [2024-09-20 18:48:46,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-09-20 18:48:46,727 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:48:46,728 INFO L216 NwaCegarLoop]: trace histogram [37, 37, 37, 37, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:48:46,740 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2024-09-20 18:48:46,928 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,73 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:46,928 INFO L399 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:48:46,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:46,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1880741417, now seen corresponding path program 72 times [2024-09-20 18:48:46,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:48:46,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244055466] [2024-09-20 18:48:46,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:48:46,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:48:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:48:48,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 18:48:48,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-20 18:48:48,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 18:48:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-20 18:48:48,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 18:48:48,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-20 18:48:48,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 18:48:48,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-20 18:48:48,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 18:48:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-20 18:48:48,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 18:48:48,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-20 18:48:48,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-20 18:48:48,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-20 18:48:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-20 18:48:48,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-20 18:48:48,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-20 18:48:48,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-20 18:48:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-20 18:48:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-20 18:48:48,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-20 18:48:48,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-20 18:48:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-20 18:48:48,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-20 18:48:48,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-20 18:48:48,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-20 18:48:48,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-20 18:48:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-20 18:48:48,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-20 18:48:48,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-20 18:48:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-20 18:48:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-20 18:48:48,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-20 18:48:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-20 18:48:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-20 18:48:48,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-09-20 18:48:48,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:48,102 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 738 proven. 1999 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-20 18:48:48,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:48:48,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244055466] [2024-09-20 18:48:48,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244055466] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:48:48,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136517543] [2024-09-20 18:48:48,102 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:48:48,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:48,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:48:48,104 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:48:48,105 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2024-09-20 18:48:48,239 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2024-09-20 18:48:48,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:48:48,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-09-20 18:48:48,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:48:48,410 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 775 proven. 1962 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-20 18:48:48,410 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:48:49,554 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 775 proven. 1962 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-20 18:48:49,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136517543] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:48:49,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:48:49,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 45 [2024-09-20 18:48:49,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799253849] [2024-09-20 18:48:49,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:48:49,555 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-20 18:48:49,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:48:49,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-20 18:48:49,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=793, Invalid=1187, Unknown=0, NotChecked=0, Total=1980 [2024-09-20 18:48:49,556 INFO L87 Difference]: Start difference. First operand 304 states and 305 transitions. Second operand has 45 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 43 states have internal predecessors, (124), 38 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-20 18:48:49,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:48:49,776 INFO L93 Difference]: Finished difference Result 317 states and 319 transitions. [2024-09-20 18:48:49,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-20 18:48:49,776 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 43 states have internal predecessors, (124), 38 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 301 [2024-09-20 18:48:49,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:48:49,778 INFO L225 Difference]: With dead ends: 317 [2024-09-20 18:48:49,778 INFO L226 Difference]: Without dead ends: 315 [2024-09-20 18:48:49,779 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 636 SyntacticMatches, 74 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1807 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=799, Invalid=1271, Unknown=0, NotChecked=0, Total=2070 [2024-09-20 18:48:49,779 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:48:49,779 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 113 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:48:49,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-09-20 18:48:49,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 311. [2024-09-20 18:48:49,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 231 states have (on average 1.0086580086580086) internal successors, (233), 232 states have internal predecessors, (233), 40 states have call successors, (40), 40 states have call predecessors, (40), 39 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-20 18:48:49,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 312 transitions. [2024-09-20 18:48:49,800 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 312 transitions. Word has length 301 [2024-09-20 18:48:49,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:48:49,801 INFO L474 AbstractCegarLoop]: Abstraction has 311 states and 312 transitions. [2024-09-20 18:48:49,801 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 43 states have internal predecessors, (124), 38 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-20 18:48:49,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:49,801 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 312 transitions. [2024-09-20 18:48:49,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-09-20 18:48:49,802 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:48:49,802 INFO L216 NwaCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:48:49,815 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2024-09-20 18:48:50,002 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,74 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:50,003 INFO L399 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:48:50,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:50,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1536568468, now seen corresponding path program 73 times [2024-09-20 18:48:50,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:48:50,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288627846] [2024-09-20 18:48:50,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:48:50,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:48:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:48:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 18:48:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-20 18:48:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 18:48:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-20 18:48:52,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 18:48:52,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-20 18:48:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 18:48:52,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-20 18:48:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 18:48:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-20 18:48:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 18:48:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-20 18:48:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-20 18:48:52,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-20 18:48:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-20 18:48:52,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-20 18:48:52,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-20 18:48:52,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-20 18:48:52,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-20 18:48:52,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-20 18:48:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-20 18:48:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-20 18:48:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-20 18:48:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-20 18:48:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-20 18:48:52,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-20 18:48:52,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-20 18:48:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-20 18:48:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-20 18:48:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-20 18:48:52,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-20 18:48:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-20 18:48:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-20 18:48:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-20 18:48:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-20 18:48:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-09-20 18:48:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-20 18:48:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,165 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2037 proven. 812 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-20 18:48:52,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:48:52,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288627846] [2024-09-20 18:48:52,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288627846] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:48:52,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033757015] [2024-09-20 18:48:52,165 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:48:52,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:52,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:48:52,166 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:48:52,167 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2024-09-20 18:48:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:52,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-09-20 18:48:52,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:48:54,355 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-20 18:48:54,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:48:56,077 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-20 18:48:56,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033757015] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:48:56,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:48:56,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79, 79] total 119 [2024-09-20 18:48:56,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125787298] [2024-09-20 18:48:56,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:48:56,078 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2024-09-20 18:48:56,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:48:56,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2024-09-20 18:48:56,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3164, Invalid=10878, Unknown=0, NotChecked=0, Total=14042 [2024-09-20 18:48:56,080 INFO L87 Difference]: Start difference. First operand 311 states and 312 transitions. Second operand has 119 states, 119 states have (on average 1.7058823529411764) internal successors, (203), 119 states have internal predecessors, (203), 77 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2024-09-20 18:48:56,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:48:56,562 INFO L93 Difference]: Finished difference Result 434 states and 473 transitions. [2024-09-20 18:48:56,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-09-20 18:48:56,563 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 1.7058823529411764) internal successors, (203), 119 states have internal predecessors, (203), 77 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) Word has length 308 [2024-09-20 18:48:56,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:48:56,565 INFO L225 Difference]: With dead ends: 434 [2024-09-20 18:48:56,565 INFO L226 Difference]: Without dead ends: 312 [2024-09-20 18:48:56,566 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 770 GetRequests, 578 SyntacticMatches, 75 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9139 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=3164, Invalid=10878, Unknown=0, NotChecked=0, Total=14042 [2024-09-20 18:48:56,566 INFO L434 NwaCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 18:48:56,566 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 600 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 18:48:56,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-09-20 18:48:56,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2024-09-20 18:48:56,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 232 states have (on average 1.0086206896551724) internal successors, (234), 233 states have internal predecessors, (234), 40 states have call successors, (40), 40 states have call predecessors, (40), 39 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-20 18:48:56,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 313 transitions. [2024-09-20 18:48:56,593 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 313 transitions. Word has length 308 [2024-09-20 18:48:56,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:48:56,593 INFO L474 AbstractCegarLoop]: Abstraction has 312 states and 313 transitions. [2024-09-20 18:48:56,594 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 1.7058823529411764) internal successors, (203), 119 states have internal predecessors, (203), 77 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2024-09-20 18:48:56,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:56,594 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 313 transitions. [2024-09-20 18:48:56,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-09-20 18:48:56,598 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:48:56,598 INFO L216 NwaCegarLoop]: trace histogram [38, 38, 38, 38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:48:56,611 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2024-09-20 18:48:56,798 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,75 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:56,799 INFO L399 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:48:56,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:56,799 INFO L85 PathProgramCache]: Analyzing trace with hash 2071228536, now seen corresponding path program 74 times [2024-09-20 18:48:56,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:48:56,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635116625] [2024-09-20 18:48:56,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:48:56,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:48:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:48:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 18:48:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 18:48:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-20 18:48:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 18:48:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-20 18:48:57,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 18:48:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-20 18:48:57,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 18:48:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-20 18:48:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 18:48:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-20 18:48:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 18:48:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-20 18:48:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-20 18:48:57,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-20 18:48:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-20 18:48:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-20 18:48:57,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-20 18:48:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-20 18:48:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-20 18:48:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-20 18:48:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-20 18:48:57,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-20 18:48:57,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-20 18:48:57,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-20 18:48:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-20 18:48:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-20 18:48:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-20 18:48:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-20 18:48:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-20 18:48:57,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-20 18:48:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-20 18:48:57,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-09-20 18:48:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-20 18:48:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-09-20 18:48:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-20 18:48:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-09-20 18:48:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:57,938 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 777 proven. 2110 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-20 18:48:57,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:48:57,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635116625] [2024-09-20 18:48:57,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635116625] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:48:57,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820628421] [2024-09-20 18:48:57,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:48:57,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:57,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:48:57,939 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:48:57,940 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2024-09-20 18:48:58,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:48:58,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:48:58,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-09-20 18:48:58,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:48:58,205 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 815 proven. 2072 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-20 18:48:58,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:48:59,389 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 815 proven. 2072 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-20 18:48:59,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820628421] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:48:59,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:48:59,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 46 [2024-09-20 18:48:59,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806509125] [2024-09-20 18:48:59,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:48:59,390 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-20 18:48:59,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:48:59,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-20 18:48:59,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=833, Invalid=1237, Unknown=0, NotChecked=0, Total=2070 [2024-09-20 18:48:59,391 INFO L87 Difference]: Start difference. First operand 312 states and 313 transitions. Second operand has 46 states, 46 states have (on average 2.760869565217391) internal successors, (127), 44 states have internal predecessors, (127), 39 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-20 18:48:59,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:48:59,628 INFO L93 Difference]: Finished difference Result 325 states and 327 transitions. [2024-09-20 18:48:59,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-09-20 18:48:59,628 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.760869565217391) internal successors, (127), 44 states have internal predecessors, (127), 39 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 309 [2024-09-20 18:48:59,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:48:59,630 INFO L225 Difference]: With dead ends: 325 [2024-09-20 18:48:59,630 INFO L226 Difference]: Without dead ends: 323 [2024-09-20 18:48:59,631 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 651 SyntacticMatches, 78 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1972 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=839, Invalid=1323, Unknown=0, NotChecked=0, Total=2162 [2024-09-20 18:48:59,631 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:48:59,631 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 138 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:48:59,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-09-20 18:48:59,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 319. [2024-09-20 18:48:59,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 237 states have (on average 1.0084388185654007) internal successors, (239), 238 states have internal predecessors, (239), 41 states have call successors, (41), 41 states have call predecessors, (41), 40 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-20 18:48:59,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 320 transitions. [2024-09-20 18:48:59,651 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 320 transitions. Word has length 309 [2024-09-20 18:48:59,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:48:59,651 INFO L474 AbstractCegarLoop]: Abstraction has 319 states and 320 transitions. [2024-09-20 18:48:59,652 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.760869565217391) internal successors, (127), 44 states have internal predecessors, (127), 39 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-20 18:48:59,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:59,652 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 320 transitions. [2024-09-20 18:48:59,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2024-09-20 18:48:59,653 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:48:59,653 INFO L216 NwaCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:48:59,665 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2024-09-20 18:48:59,857 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,76 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:59,857 INFO L399 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:48:59,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:59,858 INFO L85 PathProgramCache]: Analyzing trace with hash 603850155, now seen corresponding path program 75 times [2024-09-20 18:48:59,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:48:59,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130645923] [2024-09-20 18:48:59,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:48:59,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:48:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:49:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 18:49:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 18:49:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-20 18:49:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 18:49:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-20 18:49:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 18:49:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-20 18:49:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 18:49:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-20 18:49:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 18:49:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-20 18:49:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 18:49:02,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-20 18:49:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-20 18:49:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-20 18:49:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-20 18:49:02,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-20 18:49:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-20 18:49:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-20 18:49:02,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-20 18:49:02,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-20 18:49:02,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-20 18:49:02,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-20 18:49:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-20 18:49:02,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-20 18:49:02,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-20 18:49:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-20 18:49:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-20 18:49:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-20 18:49:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-20 18:49:02,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-20 18:49:02,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-20 18:49:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-09-20 18:49:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-20 18:49:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-09-20 18:49:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-20 18:49:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-09-20 18:49:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-20 18:49:02,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,153 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2149 proven. 853 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-20 18:49:02,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:49:02,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130645923] [2024-09-20 18:49:02,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130645923] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:49:02,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363775990] [2024-09-20 18:49:02,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:49:02,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:02,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:49:02,155 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:49:02,156 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2024-09-20 18:49:02,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2024-09-20 18:49:02,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:49:02,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-09-20 18:49:02,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:49:04,501 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-20 18:49:04,501 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:49:06,211 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-20 18:49:06,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363775990] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:49:06,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:49:06,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81, 81] total 122 [2024-09-20 18:49:06,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063324160] [2024-09-20 18:49:06,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:49:06,212 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2024-09-20 18:49:06,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:49:06,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2024-09-20 18:49:06,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3325, Invalid=11437, Unknown=0, NotChecked=0, Total=14762 [2024-09-20 18:49:06,214 INFO L87 Difference]: Start difference. First operand 319 states and 320 transitions. Second operand has 122 states, 122 states have (on average 1.7049180327868851) internal successors, (208), 122 states have internal predecessors, (208), 79 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2024-09-20 18:49:06,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:49:06,797 INFO L93 Difference]: Finished difference Result 445 states and 485 transitions. [2024-09-20 18:49:06,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-09-20 18:49:06,797 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 1.7049180327868851) internal successors, (208), 122 states have internal predecessors, (208), 79 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) Word has length 316 [2024-09-20 18:49:06,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:49:06,799 INFO L225 Difference]: With dead ends: 445 [2024-09-20 18:49:06,799 INFO L226 Difference]: Without dead ends: 320 [2024-09-20 18:49:06,800 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 790 GetRequests, 593 SyntacticMatches, 77 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9614 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=3325, Invalid=11437, Unknown=0, NotChecked=0, Total=14762 [2024-09-20 18:49:06,800 INFO L434 NwaCegarLoop]: 86 mSDtfsCounter, 0 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 18:49:06,800 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 930 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 18:49:06,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-09-20 18:49:06,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2024-09-20 18:49:06,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 238 states have (on average 1.0084033613445378) internal successors, (240), 239 states have internal predecessors, (240), 41 states have call successors, (41), 41 states have call predecessors, (41), 40 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-20 18:49:06,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 321 transitions. [2024-09-20 18:49:06,821 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 321 transitions. Word has length 316 [2024-09-20 18:49:06,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:49:06,821 INFO L474 AbstractCegarLoop]: Abstraction has 320 states and 321 transitions. [2024-09-20 18:49:06,821 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 1.7049180327868851) internal successors, (208), 122 states have internal predecessors, (208), 79 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2024-09-20 18:49:06,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:06,821 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 321 transitions. [2024-09-20 18:49:06,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-09-20 18:49:06,822 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:49:06,823 INFO L216 NwaCegarLoop]: trace histogram [39, 39, 39, 39, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:49:06,836 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2024-09-20 18:49:07,026 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2024-09-20 18:49:07,026 INFO L399 AbstractCegarLoop]: === Iteration 79 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:49:07,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:07,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1011930807, now seen corresponding path program 76 times [2024-09-20 18:49:07,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:49:07,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279723767] [2024-09-20 18:49:07,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:49:07,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:49:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:49:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-20 18:49:08,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-20 18:49:08,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 18:49:08,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 18:49:08,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 18:49:08,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-20 18:49:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 18:49:08,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-20 18:49:08,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 18:49:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-20 18:49:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 18:49:08,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-20 18:49:08,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 18:49:08,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-20 18:49:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-20 18:49:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-20 18:49:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-20 18:49:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-20 18:49:08,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 18:49:08,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-20 18:49:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-20 18:49:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-20 18:49:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-20 18:49:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-20 18:49:08,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-20 18:49:08,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-20 18:49:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-20 18:49:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-20 18:49:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-20 18:49:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-20 18:49:08,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-20 18:49:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-09-20 18:49:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-20 18:49:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-09-20 18:49:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-20 18:49:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-09-20 18:49:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-20 18:49:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-09-20 18:49:08,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:08,304 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 817 proven. 2224 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-20 18:49:08,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:49:08,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279723767] [2024-09-20 18:49:08,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279723767] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:49:08,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31210627] [2024-09-20 18:49:08,305 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:49:08,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:08,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:49:08,306 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:49:08,307 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2024-09-20 18:49:08,409 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:49:08,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:49:08,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-09-20 18:49:08,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:49:08,584 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 856 proven. 2185 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-20 18:49:08,585 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:49:09,836 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 856 proven. 2185 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-20 18:49:09,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31210627] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:49:09,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:49:09,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 47 [2024-09-20 18:49:09,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334822958] [2024-09-20 18:49:09,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:49:09,837 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-09-20 18:49:09,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:49:09,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-09-20 18:49:09,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=874, Invalid=1288, Unknown=0, NotChecked=0, Total=2162 [2024-09-20 18:49:09,838 INFO L87 Difference]: Start difference. First operand 320 states and 321 transitions. Second operand has 47 states, 47 states have (on average 2.765957446808511) internal successors, (130), 45 states have internal predecessors, (130), 40 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-20 18:49:10,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:49:10,109 INFO L93 Difference]: Finished difference Result 333 states and 335 transitions. [2024-09-20 18:49:10,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-20 18:49:10,109 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.765957446808511) internal successors, (130), 45 states have internal predecessors, (130), 40 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 317 [2024-09-20 18:49:10,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:49:10,111 INFO L225 Difference]: With dead ends: 333 [2024-09-20 18:49:10,111 INFO L226 Difference]: Without dead ends: 331 [2024-09-20 18:49:10,111 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 794 GetRequests, 670 SyntacticMatches, 78 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1983 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=880, Invalid=1376, Unknown=0, NotChecked=0, Total=2256 [2024-09-20 18:49:10,112 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:49:10,112 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 160 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:49:10,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-09-20 18:49:10,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 327. [2024-09-20 18:49:10,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 243 states have (on average 1.008230452674897) internal successors, (245), 244 states have internal predecessors, (245), 42 states have call successors, (42), 42 states have call predecessors, (42), 41 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-20 18:49:10,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 328 transitions. [2024-09-20 18:49:10,133 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 328 transitions. Word has length 317 [2024-09-20 18:49:10,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:49:10,134 INFO L474 AbstractCegarLoop]: Abstraction has 327 states and 328 transitions. [2024-09-20 18:49:10,134 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.765957446808511) internal successors, (130), 45 states have internal predecessors, (130), 40 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-20 18:49:10,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:10,134 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 328 transitions. [2024-09-20 18:49:10,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-09-20 18:49:10,135 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:49:10,135 INFO L216 NwaCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:49:10,148 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2024-09-20 18:49:10,336 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2024-09-20 18:49:10,336 INFO L399 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:49:10,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:10,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1005382284, now seen corresponding path program 77 times [2024-09-20 18:49:10,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:49:10,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647970583] [2024-09-20 18:49:10,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:49:10,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:49:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:49:12,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-20 18:49:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-20 18:49:12,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 18:49:12,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 18:49:12,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 18:49:12,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-20 18:49:12,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 18:49:12,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-20 18:49:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 18:49:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-20 18:49:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 18:49:12,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-20 18:49:12,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 18:49:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-20 18:49:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-20 18:49:12,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-20 18:49:12,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-20 18:49:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-20 18:49:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 18:49:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-20 18:49:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-20 18:49:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-20 18:49:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-20 18:49:12,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-20 18:49:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-20 18:49:12,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-20 18:49:12,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-20 18:49:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-20 18:49:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-20 18:49:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-20 18:49:12,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-20 18:49:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-09-20 18:49:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-20 18:49:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-09-20 18:49:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-20 18:49:12,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-09-20 18:49:12,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-20 18:49:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-09-20 18:49:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-20 18:49:12,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,758 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2264 proven. 895 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-20 18:49:12,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:49:12,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647970583] [2024-09-20 18:49:12,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647970583] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:49:12,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387322635] [2024-09-20 18:49:12,758 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:49:12,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:12,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:49:12,760 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:49:12,761 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2024-09-20 18:49:12,917 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2024-09-20 18:49:12,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:49:12,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-09-20 18:49:12,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:49:15,363 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-20 18:49:15,364 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:49:17,225 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-20 18:49:17,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387322635] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:49:17,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:49:17,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83, 83] total 125 [2024-09-20 18:49:17,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831339950] [2024-09-20 18:49:17,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:49:17,226 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2024-09-20 18:49:17,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:49:17,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2024-09-20 18:49:17,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3490, Invalid=12010, Unknown=0, NotChecked=0, Total=15500 [2024-09-20 18:49:17,229 INFO L87 Difference]: Start difference. First operand 327 states and 328 transitions. Second operand has 125 states, 125 states have (on average 1.704) internal successors, (213), 125 states have internal predecessors, (213), 81 states have call successors, (82), 2 states have call predecessors, (82), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2024-09-20 18:49:17,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:49:17,862 INFO L93 Difference]: Finished difference Result 456 states and 497 transitions. [2024-09-20 18:49:17,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-09-20 18:49:17,863 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 125 states have (on average 1.704) internal successors, (213), 125 states have internal predecessors, (213), 81 states have call successors, (82), 2 states have call predecessors, (82), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) Word has length 324 [2024-09-20 18:49:17,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:49:17,865 INFO L225 Difference]: With dead ends: 456 [2024-09-20 18:49:17,865 INFO L226 Difference]: Without dead ends: 328 [2024-09-20 18:49:17,866 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 810 GetRequests, 608 SyntacticMatches, 79 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10101 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=3490, Invalid=12010, Unknown=0, NotChecked=0, Total=15500 [2024-09-20 18:49:17,866 INFO L434 NwaCegarLoop]: 88 mSDtfsCounter, 0 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 18:49:17,866 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 983 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 18:49:17,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-09-20 18:49:17,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2024-09-20 18:49:17,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 244 states have (on average 1.0081967213114753) internal successors, (246), 245 states have internal predecessors, (246), 42 states have call successors, (42), 42 states have call predecessors, (42), 41 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-20 18:49:17,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 329 transitions. [2024-09-20 18:49:17,893 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 329 transitions. Word has length 324 [2024-09-20 18:49:17,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:49:17,893 INFO L474 AbstractCegarLoop]: Abstraction has 328 states and 329 transitions. [2024-09-20 18:49:17,893 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 125 states have (on average 1.704) internal successors, (213), 125 states have internal predecessors, (213), 81 states have call successors, (82), 2 states have call predecessors, (82), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2024-09-20 18:49:17,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:17,894 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 329 transitions. [2024-09-20 18:49:17,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2024-09-20 18:49:17,895 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:49:17,895 INFO L216 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:49:17,908 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2024-09-20 18:49:18,097 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,79 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:18,098 INFO L399 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:49:18,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:18,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1273761896, now seen corresponding path program 78 times [2024-09-20 18:49:18,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:49:18,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350600698] [2024-09-20 18:49:18,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:49:18,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:49:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:49:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-20 18:49:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 18:49:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 18:49:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 18:49:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 18:49:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:49:19,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 18:49:19,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 18:49:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-20 18:49:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 18:49:19,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-20 18:49:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 18:49:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-20 18:49:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 18:49:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-20 18:49:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 18:49:19,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-20 18:49:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-20 18:49:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-20 18:49:19,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-20 18:49:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-20 18:49:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-20 18:49:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-20 18:49:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-20 18:49:19,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-20 18:49:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-20 18:49:19,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-20 18:49:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-20 18:49:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-20 18:49:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-20 18:49:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-20 18:49:19,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-20 18:49:19,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-09-20 18:49:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-20 18:49:19,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-09-20 18:49:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-20 18:49:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-09-20 18:49:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-20 18:49:19,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-09-20 18:49:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:19,463 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 858 proven. 2341 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-20 18:49:19,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:49:19,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350600698] [2024-09-20 18:49:19,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350600698] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:49:19,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550133727] [2024-09-20 18:49:19,464 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:49:19,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:19,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:49:19,465 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:49:19,466 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2024-09-20 18:49:19,625 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2024-09-20 18:49:19,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:49:19,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-09-20 18:49:19,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:49:19,806 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 898 proven. 2301 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-20 18:49:19,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:49:21,131 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 898 proven. 2301 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-20 18:49:21,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550133727] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:49:21,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:49:21,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 48 [2024-09-20 18:49:21,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455286298] [2024-09-20 18:49:21,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:49:21,132 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-20 18:49:21,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:49:21,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-20 18:49:21,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=916, Invalid=1340, Unknown=0, NotChecked=0, Total=2256 [2024-09-20 18:49:21,133 INFO L87 Difference]: Start difference. First operand 328 states and 329 transitions. Second operand has 48 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 46 states have internal predecessors, (133), 41 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-20 18:49:21,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:49:21,310 INFO L93 Difference]: Finished difference Result 341 states and 343 transitions. [2024-09-20 18:49:21,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-09-20 18:49:21,310 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 46 states have internal predecessors, (133), 41 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 325 [2024-09-20 18:49:21,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:49:21,312 INFO L225 Difference]: With dead ends: 341 [2024-09-20 18:49:21,312 INFO L226 Difference]: Without dead ends: 339 [2024-09-20 18:49:21,312 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 814 GetRequests, 687 SyntacticMatches, 80 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2074 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=922, Invalid=1430, Unknown=0, NotChecked=0, Total=2352 [2024-09-20 18:49:21,313 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:49:21,313 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 98 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:49:21,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2024-09-20 18:49:21,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 335. [2024-09-20 18:49:21,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 249 states have (on average 1.0080321285140563) internal successors, (251), 250 states have internal predecessors, (251), 43 states have call successors, (43), 43 states have call predecessors, (43), 42 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-20 18:49:21,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 336 transitions. [2024-09-20 18:49:21,335 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 336 transitions. Word has length 325 [2024-09-20 18:49:21,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:49:21,335 INFO L474 AbstractCegarLoop]: Abstraction has 335 states and 336 transitions. [2024-09-20 18:49:21,335 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 46 states have internal predecessors, (133), 41 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-20 18:49:21,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:21,335 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 336 transitions. [2024-09-20 18:49:21,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-09-20 18:49:21,336 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:49:21,336 INFO L216 NwaCegarLoop]: trace histogram [41, 41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:49:21,349 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2024-09-20 18:49:21,540 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,80 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:21,541 INFO L399 AbstractCegarLoop]: === Iteration 82 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:49:21,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:21,541 INFO L85 PathProgramCache]: Analyzing trace with hash 2078753419, now seen corresponding path program 79 times [2024-09-20 18:49:21,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:49:21,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384285665] [2024-09-20 18:49:21,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:49:21,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:49:21,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:49:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-20 18:49:23,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 18:49:23,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 18:49:23,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 18:49:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 18:49:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:49:23,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 18:49:23,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 18:49:23,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-20 18:49:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 18:49:23,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-20 18:49:23,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 18:49:23,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-20 18:49:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 18:49:23,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-20 18:49:23,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 18:49:23,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-20 18:49:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-20 18:49:23,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-20 18:49:23,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-20 18:49:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-20 18:49:23,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-20 18:49:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-20 18:49:23,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-20 18:49:23,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-20 18:49:23,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-20 18:49:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-20 18:49:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-20 18:49:23,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-20 18:49:23,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-20 18:49:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-20 18:49:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-20 18:49:23,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-09-20 18:49:23,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-20 18:49:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-09-20 18:49:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-20 18:49:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-09-20 18:49:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-20 18:49:23,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-09-20 18:49:23,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-20 18:49:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,740 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2382 proven. 938 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-20 18:49:23,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:49:23,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384285665] [2024-09-20 18:49:23,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384285665] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:49:23,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695931829] [2024-09-20 18:49:23,741 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:49:23,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:23,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:49:23,742 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:49:23,743 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2024-09-20 18:49:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:23,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-09-20 18:49:23,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:49:26,294 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-20 18:49:26,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:49:28,103 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-20 18:49:28,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695931829] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:49:28,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:49:28,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85, 85] total 128 [2024-09-20 18:49:28,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026167365] [2024-09-20 18:49:28,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:49:28,104 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2024-09-20 18:49:28,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:49:28,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2024-09-20 18:49:28,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3659, Invalid=12597, Unknown=0, NotChecked=0, Total=16256 [2024-09-20 18:49:28,106 INFO L87 Difference]: Start difference. First operand 335 states and 336 transitions. Second operand has 128 states, 128 states have (on average 1.703125) internal successors, (218), 128 states have internal predecessors, (218), 83 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2024-09-20 18:49:28,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:49:28,653 INFO L93 Difference]: Finished difference Result 467 states and 509 transitions. [2024-09-20 18:49:28,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-09-20 18:49:28,654 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 1.703125) internal successors, (218), 128 states have internal predecessors, (218), 83 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) Word has length 332 [2024-09-20 18:49:28,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:49:28,655 INFO L225 Difference]: With dead ends: 467 [2024-09-20 18:49:28,656 INFO L226 Difference]: Without dead ends: 336 [2024-09-20 18:49:28,656 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 623 SyntacticMatches, 81 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10600 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=3659, Invalid=12597, Unknown=0, NotChecked=0, Total=16256 [2024-09-20 18:49:28,657 INFO L434 NwaCegarLoop]: 90 mSDtfsCounter, 0 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 18:49:28,657 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 793 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1128 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 18:49:28,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-09-20 18:49:28,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2024-09-20 18:49:28,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 250 states have (on average 1.008) internal successors, (252), 251 states have internal predecessors, (252), 43 states have call successors, (43), 43 states have call predecessors, (43), 42 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-20 18:49:28,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 337 transitions. [2024-09-20 18:49:28,679 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 337 transitions. Word has length 332 [2024-09-20 18:49:28,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:49:28,679 INFO L474 AbstractCegarLoop]: Abstraction has 336 states and 337 transitions. [2024-09-20 18:49:28,680 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 1.703125) internal successors, (218), 128 states have internal predecessors, (218), 83 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2024-09-20 18:49:28,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:28,680 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 337 transitions. [2024-09-20 18:49:28,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2024-09-20 18:49:28,681 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:49:28,681 INFO L216 NwaCegarLoop]: trace histogram [41, 41, 41, 41, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:49:28,694 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2024-09-20 18:49:28,885 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,81 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:28,886 INFO L399 AbstractCegarLoop]: === Iteration 83 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:49:28,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:28,886 INFO L85 PathProgramCache]: Analyzing trace with hash 644774807, now seen corresponding path program 80 times [2024-09-20 18:49:28,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:49:28,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042698975] [2024-09-20 18:49:28,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:49:28,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:49:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:49:30,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 18:49:30,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 18:49:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 18:49:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 18:49:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 18:49:30,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-20 18:49:30,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 18:49:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 18:49:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 18:49:30,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-20 18:49:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 18:49:30,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-20 18:49:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 18:49:30,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-20 18:49:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 18:49:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-20 18:49:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-20 18:49:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-20 18:49:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-20 18:49:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-20 18:49:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-20 18:49:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-20 18:49:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-20 18:49:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-20 18:49:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-20 18:49:30,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-20 18:49:30,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-20 18:49:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-20 18:49:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-20 18:49:30,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-20 18:49:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-20 18:49:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-20 18:49:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-20 18:49:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-09-20 18:49:30,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-20 18:49:30,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-09-20 18:49:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-20 18:49:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-09-20 18:49:30,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-20 18:49:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-09-20 18:49:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:30,299 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 900 proven. 2461 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-20 18:49:30,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:49:30,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042698975] [2024-09-20 18:49:30,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042698975] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:49:30,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950557306] [2024-09-20 18:49:30,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:49:30,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:30,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:49:30,301 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:49:30,302 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2024-09-20 18:49:30,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:49:30,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:49:30,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-09-20 18:49:30,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:49:30,586 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 941 proven. 2420 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-20 18:49:30,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:49:31,957 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 941 proven. 2420 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-20 18:49:31,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950557306] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:49:31,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:49:31,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 49 [2024-09-20 18:49:31,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398784962] [2024-09-20 18:49:31,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:49:31,958 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-20 18:49:31,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:49:31,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-20 18:49:31,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=959, Invalid=1393, Unknown=0, NotChecked=0, Total=2352 [2024-09-20 18:49:31,959 INFO L87 Difference]: Start difference. First operand 336 states and 337 transitions. Second operand has 49 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 47 states have internal predecessors, (136), 42 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-20 18:49:32,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:49:32,210 INFO L93 Difference]: Finished difference Result 349 states and 351 transitions. [2024-09-20 18:49:32,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-20 18:49:32,210 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 47 states have internal predecessors, (136), 42 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Word has length 333 [2024-09-20 18:49:32,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:49:32,212 INFO L225 Difference]: With dead ends: 349 [2024-09-20 18:49:32,212 INFO L226 Difference]: Without dead ends: 347 [2024-09-20 18:49:32,213 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 702 SyntacticMatches, 84 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2251 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=965, Invalid=1485, Unknown=0, NotChecked=0, Total=2450 [2024-09-20 18:49:32,213 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:49:32,213 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 155 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:49:32,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-09-20 18:49:32,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 343. [2024-09-20 18:49:32,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 255 states have (on average 1.007843137254902) internal successors, (257), 256 states have internal predecessors, (257), 44 states have call successors, (44), 44 states have call predecessors, (44), 43 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-20 18:49:32,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 344 transitions. [2024-09-20 18:49:32,235 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 344 transitions. Word has length 333 [2024-09-20 18:49:32,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:49:32,236 INFO L474 AbstractCegarLoop]: Abstraction has 343 states and 344 transitions. [2024-09-20 18:49:32,236 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 47 states have internal predecessors, (136), 42 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-20 18:49:32,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:32,236 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 344 transitions. [2024-09-20 18:49:32,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2024-09-20 18:49:32,237 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:49:32,237 INFO L216 NwaCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:49:32,251 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2024-09-20 18:49:32,438 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2024-09-20 18:49:32,438 INFO L399 AbstractCegarLoop]: === Iteration 84 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:49:32,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:32,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1291192748, now seen corresponding path program 81 times [2024-09-20 18:49:32,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:49:32,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160131425] [2024-09-20 18:49:32,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:49:32,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:49:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:49:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 18:49:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 18:49:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 18:49:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 18:49:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 18:49:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-20 18:49:35,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 18:49:35,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 18:49:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 18:49:35,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-20 18:49:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 18:49:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-20 18:49:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 18:49:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-20 18:49:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 18:49:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-20 18:49:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-20 18:49:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-20 18:49:35,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-20 18:49:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-20 18:49:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-20 18:49:35,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-20 18:49:35,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-20 18:49:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-20 18:49:35,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-20 18:49:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-20 18:49:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-20 18:49:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-20 18:49:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-20 18:49:35,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-20 18:49:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-20 18:49:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-20 18:49:35,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-20 18:49:35,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-09-20 18:49:35,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-20 18:49:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-09-20 18:49:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-20 18:49:35,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-09-20 18:49:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-20 18:49:35,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-09-20 18:49:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-20 18:49:35,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:35,132 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2503 proven. 982 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-20 18:49:35,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:49:35,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160131425] [2024-09-20 18:49:35,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160131425] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:49:35,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53235333] [2024-09-20 18:49:35,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:49:35,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:35,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:49:35,134 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:49:35,135 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2024-09-20 18:49:35,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2024-09-20 18:49:35,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:49:35,294 INFO L262 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-09-20 18:49:35,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:49:37,840 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-20 18:49:37,841 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:49:39,910 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-20 18:49:39,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53235333] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:49:39,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:49:39,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87, 87] total 131 [2024-09-20 18:49:39,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655184737] [2024-09-20 18:49:39,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:49:39,911 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2024-09-20 18:49:39,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:49:39,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2024-09-20 18:49:39,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3832, Invalid=13198, Unknown=0, NotChecked=0, Total=17030 [2024-09-20 18:49:39,914 INFO L87 Difference]: Start difference. First operand 343 states and 344 transitions. Second operand has 131 states, 131 states have (on average 1.702290076335878) internal successors, (223), 131 states have internal predecessors, (223), 85 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2024-09-20 18:49:40,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:49:40,541 INFO L93 Difference]: Finished difference Result 478 states and 521 transitions. [2024-09-20 18:49:40,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-09-20 18:49:40,542 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 1.702290076335878) internal successors, (223), 131 states have internal predecessors, (223), 85 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) Word has length 340 [2024-09-20 18:49:40,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:49:40,544 INFO L225 Difference]: With dead ends: 478 [2024-09-20 18:49:40,544 INFO L226 Difference]: Without dead ends: 344 [2024-09-20 18:49:40,545 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 850 GetRequests, 638 SyntacticMatches, 83 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11111 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=3832, Invalid=13198, Unknown=0, NotChecked=0, Total=17030 [2024-09-20 18:49:40,545 INFO L434 NwaCegarLoop]: 92 mSDtfsCounter, 0 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 18:49:40,545 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 936 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 18:49:40,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-09-20 18:49:40,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2024-09-20 18:49:40,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 256 states have (on average 1.0078125) internal successors, (258), 257 states have internal predecessors, (258), 44 states have call successors, (44), 44 states have call predecessors, (44), 43 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-20 18:49:40,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 345 transitions. [2024-09-20 18:49:40,568 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 345 transitions. Word has length 340 [2024-09-20 18:49:40,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:49:40,569 INFO L474 AbstractCegarLoop]: Abstraction has 344 states and 345 transitions. [2024-09-20 18:49:40,569 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 1.702290076335878) internal successors, (223), 131 states have internal predecessors, (223), 85 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2024-09-20 18:49:40,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:40,569 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 345 transitions. [2024-09-20 18:49:40,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2024-09-20 18:49:40,570 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:49:40,570 INFO L216 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:49:40,583 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2024-09-20 18:49:40,774 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,83 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:40,775 INFO L399 AbstractCegarLoop]: === Iteration 85 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:49:40,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:40,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1335265608, now seen corresponding path program 82 times [2024-09-20 18:49:40,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:49:40,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434304511] [2024-09-20 18:49:40,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:49:40,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:49:40,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:49:42,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 18:49:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 18:49:42,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 18:49:42,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 18:49:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-20 18:49:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 18:49:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-20 18:49:42,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 18:49:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 18:49:42,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 18:49:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-20 18:49:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-20 18:49:42,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-20 18:49:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-20 18:49:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-20 18:49:42,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-20 18:49:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-20 18:49:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-20 18:49:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-20 18:49:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-20 18:49:42,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-20 18:49:42,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-20 18:49:42,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-20 18:49:42,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-20 18:49:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-20 18:49:42,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-20 18:49:42,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-20 18:49:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-20 18:49:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-20 18:49:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-20 18:49:42,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-20 18:49:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-20 18:49:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-20 18:49:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-20 18:49:42,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2024-09-20 18:49:42,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-20 18:49:42,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-09-20 18:49:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-20 18:49:42,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2024-09-20 18:49:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-20 18:49:42,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2024-09-20 18:49:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:42,085 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 943 proven. 2584 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-20 18:49:42,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:49:42,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434304511] [2024-09-20 18:49:42,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434304511] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:49:42,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326400949] [2024-09-20 18:49:42,085 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:49:42,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:42,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:49:42,088 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:49:42,089 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2024-09-20 18:49:42,195 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:49:42,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:49:42,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-09-20 18:49:42,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:49:42,347 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 985 proven. 2542 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-20 18:49:42,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:49:43,461 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 985 proven. 2542 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-20 18:49:43,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326400949] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:49:43,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:49:43,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 50 [2024-09-20 18:49:43,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920483380] [2024-09-20 18:49:43,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:49:43,461 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-09-20 18:49:43,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:49:43,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-09-20 18:49:43,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1003, Invalid=1447, Unknown=0, NotChecked=0, Total=2450 [2024-09-20 18:49:43,462 INFO L87 Difference]: Start difference. First operand 344 states and 345 transitions. Second operand has 50 states, 50 states have (on average 2.78) internal successors, (139), 48 states have internal predecessors, (139), 43 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-20 18:49:43,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:49:43,655 INFO L93 Difference]: Finished difference Result 357 states and 359 transitions. [2024-09-20 18:49:43,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-09-20 18:49:43,655 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.78) internal successors, (139), 48 states have internal predecessors, (139), 43 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 341 [2024-09-20 18:49:43,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:49:43,657 INFO L225 Difference]: With dead ends: 357 [2024-09-20 18:49:43,657 INFO L226 Difference]: Without dead ends: 355 [2024-09-20 18:49:43,658 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 721 SyntacticMatches, 84 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2262 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1009, Invalid=1541, Unknown=0, NotChecked=0, Total=2550 [2024-09-20 18:49:43,658 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:49:43,658 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 128 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:49:43,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-09-20 18:49:43,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 351. [2024-09-20 18:49:43,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 261 states have (on average 1.0076628352490422) internal successors, (263), 262 states have internal predecessors, (263), 45 states have call successors, (45), 45 states have call predecessors, (45), 44 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-20 18:49:43,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 352 transitions. [2024-09-20 18:49:43,682 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 352 transitions. Word has length 341 [2024-09-20 18:49:43,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:49:43,682 INFO L474 AbstractCegarLoop]: Abstraction has 351 states and 352 transitions. [2024-09-20 18:49:43,682 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.78) internal successors, (139), 48 states have internal predecessors, (139), 43 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-20 18:49:43,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:43,682 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 352 transitions. [2024-09-20 18:49:43,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2024-09-20 18:49:43,683 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:49:43,684 INFO L216 NwaCegarLoop]: trace histogram [43, 43, 43, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:49:43,697 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2024-09-20 18:49:43,884 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,84 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:43,884 INFO L399 AbstractCegarLoop]: === Iteration 86 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:49:43,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:43,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1597933717, now seen corresponding path program 83 times [2024-09-20 18:49:43,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:49:43,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875429587] [2024-09-20 18:49:43,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:49:43,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:49:43,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:49:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 18:49:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 18:49:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 18:49:46,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 18:49:46,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-20 18:49:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 18:49:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-20 18:49:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 18:49:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 18:49:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 18:49:46,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-20 18:49:46,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-20 18:49:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-20 18:49:46,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-20 18:49:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-20 18:49:46,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-20 18:49:46,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-20 18:49:46,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-20 18:49:46,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-20 18:49:46,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,216 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-20 18:49:46,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,217 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-20 18:49:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-20 18:49:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-20 18:49:46,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-20 18:49:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-20 18:49:46,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-20 18:49:46,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-20 18:49:46,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-20 18:49:46,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-20 18:49:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-20 18:49:46,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-20 18:49:46,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-20 18:49:46,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-20 18:49:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-20 18:49:46,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2024-09-20 18:49:46,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-20 18:49:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-09-20 18:49:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-20 18:49:46,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2024-09-20 18:49:46,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-20 18:49:46,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2024-09-20 18:49:46,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-20 18:49:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:46,237 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2627 proven. 1027 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-20 18:49:46,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:49:46,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875429587] [2024-09-20 18:49:46,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875429587] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:49:46,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748104402] [2024-09-20 18:49:46,237 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:49:46,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:46,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:49:46,239 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:49:46,240 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2024-09-20 18:49:46,404 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2024-09-20 18:49:46,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:49:46,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-09-20 18:49:46,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:49:48,509 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2751 proven. 903 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-20 18:49:48,509 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:49:50,235 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2751 proven. 903 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-20 18:49:50,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748104402] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:49:50,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:49:50,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89, 89] total 134 [2024-09-20 18:49:50,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867401796] [2024-09-20 18:49:50,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:49:50,236 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2024-09-20 18:49:50,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:49:50,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2024-09-20 18:49:50,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4009, Invalid=13813, Unknown=0, NotChecked=0, Total=17822 [2024-09-20 18:49:50,239 INFO L87 Difference]: Start difference. First operand 351 states and 352 transitions. Second operand has 134 states, 134 states have (on average 1.7014925373134329) internal successors, (228), 134 states have internal predecessors, (228), 87 states have call successors, (88), 2 states have call predecessors, (88), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2024-09-20 18:49:50,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:49:50,869 INFO L93 Difference]: Finished difference Result 489 states and 533 transitions. [2024-09-20 18:49:50,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2024-09-20 18:49:50,870 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 134 states have (on average 1.7014925373134329) internal successors, (228), 134 states have internal predecessors, (228), 87 states have call successors, (88), 2 states have call predecessors, (88), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) Word has length 348 [2024-09-20 18:49:50,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:49:50,872 INFO L225 Difference]: With dead ends: 489 [2024-09-20 18:49:50,872 INFO L226 Difference]: Without dead ends: 352 [2024-09-20 18:49:50,873 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 870 GetRequests, 653 SyntacticMatches, 85 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11634 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=4009, Invalid=13813, Unknown=0, NotChecked=0, Total=17822 [2024-09-20 18:49:50,873 INFO L434 NwaCegarLoop]: 94 mSDtfsCounter, 0 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 1576 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 1576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 18:49:50,873 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1243 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1576 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 18:49:50,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2024-09-20 18:49:50,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2024-09-20 18:49:50,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 262 states have (on average 1.0076335877862594) internal successors, (264), 263 states have internal predecessors, (264), 45 states have call successors, (45), 45 states have call predecessors, (45), 44 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-20 18:49:50,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 353 transitions. [2024-09-20 18:49:50,898 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 353 transitions. Word has length 348 [2024-09-20 18:49:50,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:49:50,898 INFO L474 AbstractCegarLoop]: Abstraction has 352 states and 353 transitions. [2024-09-20 18:49:50,898 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 1.7014925373134329) internal successors, (228), 134 states have internal predecessors, (228), 87 states have call successors, (88), 2 states have call predecessors, (88), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2024-09-20 18:49:50,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:50,899 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 353 transitions. [2024-09-20 18:49:50,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2024-09-20 18:49:50,900 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:49:50,900 INFO L216 NwaCegarLoop]: trace histogram [43, 43, 43, 43, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:49:50,913 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2024-09-20 18:49:51,103 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,85 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:51,104 INFO L399 AbstractCegarLoop]: === Iteration 87 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:49:51,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:51,104 INFO L85 PathProgramCache]: Analyzing trace with hash -139650953, now seen corresponding path program 84 times [2024-09-20 18:49:51,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:49:51,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822251153] [2024-09-20 18:49:51,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:49:51,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:49:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:49:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 18:49:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-20 18:49:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 18:49:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-20 18:49:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 18:49:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-20 18:49:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 18:49:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-20 18:49:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 18:49:52,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-20 18:49:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 18:49:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-20 18:49:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-20 18:49:52,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-20 18:49:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-20 18:49:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-20 18:49:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-20 18:49:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-20 18:49:52,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-20 18:49:52,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-20 18:49:52,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-20 18:49:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-20 18:49:52,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-20 18:49:52,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-20 18:49:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-20 18:49:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-20 18:49:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-20 18:49:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-20 18:49:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-20 18:49:52,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-20 18:49:52,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-20 18:49:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-20 18:49:52,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-20 18:49:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-20 18:49:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-20 18:49:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2024-09-20 18:49:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-20 18:49:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2024-09-20 18:49:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-20 18:49:52,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2024-09-20 18:49:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-20 18:49:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2024-09-20 18:49:52,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:52,573 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 987 proven. 2710 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-20 18:49:52,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:49:52,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822251153] [2024-09-20 18:49:52,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822251153] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:49:52,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413286449] [2024-09-20 18:49:52,573 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:49:52,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:52,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:49:52,574 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:49:52,576 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2024-09-20 18:49:52,732 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2024-09-20 18:49:52,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:49:52,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-09-20 18:49:52,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:49:52,933 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 1030 proven. 2667 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-20 18:49:52,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:49:54,483 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 1030 proven. 2667 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-20 18:49:54,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413286449] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:49:54,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:49:54,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 51 [2024-09-20 18:49:54,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689044600] [2024-09-20 18:49:54,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:49:54,484 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-09-20 18:49:54,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:49:54,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-09-20 18:49:54,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1048, Invalid=1502, Unknown=0, NotChecked=0, Total=2550 [2024-09-20 18:49:54,485 INFO L87 Difference]: Start difference. First operand 352 states and 353 transitions. Second operand has 51 states, 51 states have (on average 2.784313725490196) internal successors, (142), 49 states have internal predecessors, (142), 44 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-20 18:49:54,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:49:54,735 INFO L93 Difference]: Finished difference Result 365 states and 367 transitions. [2024-09-20 18:49:54,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-09-20 18:49:54,736 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.784313725490196) internal successors, (142), 49 states have internal predecessors, (142), 44 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Word has length 349 [2024-09-20 18:49:54,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:49:54,738 INFO L225 Difference]: With dead ends: 365 [2024-09-20 18:49:54,738 INFO L226 Difference]: Without dead ends: 363 [2024-09-20 18:49:54,738 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 874 GetRequests, 738 SyntacticMatches, 86 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2359 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1054, Invalid=1598, Unknown=0, NotChecked=0, Total=2652 [2024-09-20 18:49:54,739 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:49:54,739 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 132 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:49:54,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-09-20 18:49:54,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 359. [2024-09-20 18:49:54,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 267 states have (on average 1.0074906367041199) internal successors, (269), 268 states have internal predecessors, (269), 46 states have call successors, (46), 46 states have call predecessors, (46), 45 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-20 18:49:54,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 360 transitions. [2024-09-20 18:49:54,765 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 360 transitions. Word has length 349 [2024-09-20 18:49:54,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:49:54,766 INFO L474 AbstractCegarLoop]: Abstraction has 359 states and 360 transitions. [2024-09-20 18:49:54,766 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.784313725490196) internal successors, (142), 49 states have internal predecessors, (142), 44 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-20 18:49:54,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:54,766 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 360 transitions. [2024-09-20 18:49:54,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2024-09-20 18:49:54,767 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:49:54,767 INFO L216 NwaCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:49:54,785 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2024-09-20 18:49:54,968 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,86 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:54,968 INFO L399 AbstractCegarLoop]: === Iteration 88 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:49:54,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:54,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1448554700, now seen corresponding path program 85 times [2024-09-20 18:49:54,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:49:54,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490200331] [2024-09-20 18:49:54,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:49:54,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:49:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:49:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 18:49:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-20 18:49:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 18:49:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-20 18:49:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 18:49:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-20 18:49:57,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 18:49:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-20 18:49:57,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 18:49:57,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-20 18:49:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 18:49:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-20 18:49:57,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-20 18:49:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-20 18:49:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-20 18:49:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-20 18:49:57,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-20 18:49:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-20 18:49:57,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-20 18:49:57,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-20 18:49:57,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-20 18:49:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-20 18:49:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-20 18:49:57,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-20 18:49:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-20 18:49:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-20 18:49:57,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-20 18:49:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-20 18:49:57,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-20 18:49:57,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-20 18:49:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-20 18:49:57,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-20 18:49:57,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-20 18:49:57,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-20 18:49:57,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-20 18:49:57,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2024-09-20 18:49:57,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-20 18:49:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2024-09-20 18:49:57,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-20 18:49:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2024-09-20 18:49:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-20 18:49:57,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2024-09-20 18:49:57,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-20 18:49:57,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,507 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2754 proven. 1073 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-20 18:49:57,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:49:57,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490200331] [2024-09-20 18:49:57,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490200331] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:49:57,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240841044] [2024-09-20 18:49:57,507 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:49:57,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:57,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:49:57,509 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:49:57,509 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2024-09-20 18:49:57,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:57,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-09-20 18:49:57,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:49:59,750 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2881 proven. 946 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-20 18:49:59,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:50:01,526 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2881 proven. 946 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-20 18:50:01,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240841044] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:50:01,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:50:01,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91, 91] total 137 [2024-09-20 18:50:01,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620938922] [2024-09-20 18:50:01,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:50:01,528 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2024-09-20 18:50:01,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:50:01,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2024-09-20 18:50:01,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4190, Invalid=14442, Unknown=0, NotChecked=0, Total=18632 [2024-09-20 18:50:01,530 INFO L87 Difference]: Start difference. First operand 359 states and 360 transitions. Second operand has 137 states, 137 states have (on average 1.7007299270072993) internal successors, (233), 137 states have internal predecessors, (233), 89 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2024-09-20 18:50:02,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:50:02,053 INFO L93 Difference]: Finished difference Result 500 states and 545 transitions. [2024-09-20 18:50:02,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2024-09-20 18:50:02,054 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 137 states have (on average 1.7007299270072993) internal successors, (233), 137 states have internal predecessors, (233), 89 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) Word has length 356 [2024-09-20 18:50:02,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:50:02,056 INFO L225 Difference]: With dead ends: 500 [2024-09-20 18:50:02,056 INFO L226 Difference]: Without dead ends: 360 [2024-09-20 18:50:02,057 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 890 GetRequests, 668 SyntacticMatches, 87 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12169 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=4190, Invalid=14442, Unknown=0, NotChecked=0, Total=18632 [2024-09-20 18:50:02,058 INFO L434 NwaCegarLoop]: 96 mSDtfsCounter, 0 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 18:50:02,058 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 501 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 18:50:02,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-09-20 18:50:02,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2024-09-20 18:50:02,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 268 states have (on average 1.007462686567164) internal successors, (270), 269 states have internal predecessors, (270), 46 states have call successors, (46), 46 states have call predecessors, (46), 45 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-20 18:50:02,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 361 transitions. [2024-09-20 18:50:02,084 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 361 transitions. Word has length 356 [2024-09-20 18:50:02,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:50:02,084 INFO L474 AbstractCegarLoop]: Abstraction has 360 states and 361 transitions. [2024-09-20 18:50:02,085 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 137 states have (on average 1.7007299270072993) internal successors, (233), 137 states have internal predecessors, (233), 89 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2024-09-20 18:50:02,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:50:02,085 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 361 transitions. [2024-09-20 18:50:02,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2024-09-20 18:50:02,086 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:50:02,086 INFO L216 NwaCegarLoop]: trace histogram [44, 44, 44, 44, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:50:02,100 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2024-09-20 18:50:02,290 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2024-09-20 18:50:02,290 INFO L399 AbstractCegarLoop]: === Iteration 89 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:50:02,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:50:02,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1891170856, now seen corresponding path program 86 times [2024-09-20 18:50:02,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:50:02,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620725247] [2024-09-20 18:50:02,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:50:02,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:50:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:50:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-20 18:50:03,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 18:50:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-20 18:50:03,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 18:50:03,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-20 18:50:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 18:50:03,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-20 18:50:03,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 18:50:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-20 18:50:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 18:50:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-20 18:50:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-20 18:50:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-20 18:50:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-20 18:50:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-20 18:50:03,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-20 18:50:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-20 18:50:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-20 18:50:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-20 18:50:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-20 18:50:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-20 18:50:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-20 18:50:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-20 18:50:03,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-20 18:50:03,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-20 18:50:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-20 18:50:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-20 18:50:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-20 18:50:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-20 18:50:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-20 18:50:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-20 18:50:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-20 18:50:03,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-20 18:50:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-20 18:50:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-09-20 18:50:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-20 18:50:03,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2024-09-20 18:50:03,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-20 18:50:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2024-09-20 18:50:03,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-20 18:50:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2024-09-20 18:50:03,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-20 18:50:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2024-09-20 18:50:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:03,744 INFO L134 CoverageAnalysis]: Checked inductivity of 7483 backedges. 1032 proven. 2839 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-20 18:50:03,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:50:03,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620725247] [2024-09-20 18:50:03,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620725247] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:50:03,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422173567] [2024-09-20 18:50:03,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:50:03,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:50:03,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:50:03,746 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:50:03,747 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2024-09-20 18:50:03,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:50:03,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:50:03,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-09-20 18:50:03,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:50:04,019 INFO L134 CoverageAnalysis]: Checked inductivity of 7483 backedges. 1076 proven. 2795 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-20 18:50:04,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:50:05,286 INFO L134 CoverageAnalysis]: Checked inductivity of 7483 backedges. 1076 proven. 2795 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-20 18:50:05,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422173567] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:50:05,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:50:05,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 52 [2024-09-20 18:50:05,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188875388] [2024-09-20 18:50:05,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:50:05,287 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-09-20 18:50:05,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:50:05,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-09-20 18:50:05,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1094, Invalid=1558, Unknown=0, NotChecked=0, Total=2652 [2024-09-20 18:50:05,288 INFO L87 Difference]: Start difference. First operand 360 states and 361 transitions. Second operand has 52 states, 52 states have (on average 2.7884615384615383) internal successors, (145), 50 states have internal predecessors, (145), 45 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-20 18:50:05,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:50:05,503 INFO L93 Difference]: Finished difference Result 373 states and 375 transitions. [2024-09-20 18:50:05,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-09-20 18:50:05,504 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.7884615384615383) internal successors, (145), 50 states have internal predecessors, (145), 45 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 357 [2024-09-20 18:50:05,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:50:05,506 INFO L225 Difference]: With dead ends: 373 [2024-09-20 18:50:05,506 INFO L226 Difference]: Without dead ends: 371 [2024-09-20 18:50:05,506 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 894 GetRequests, 753 SyntacticMatches, 90 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2548 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1100, Invalid=1656, Unknown=0, NotChecked=0, Total=2756 [2024-09-20 18:50:05,506 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:50:05,506 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 130 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:50:05,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2024-09-20 18:50:05,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 367. [2024-09-20 18:50:05,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 273 states have (on average 1.0073260073260073) internal successors, (275), 274 states have internal predecessors, (275), 47 states have call successors, (47), 47 states have call predecessors, (47), 46 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-20 18:50:05,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 368 transitions. [2024-09-20 18:50:05,533 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 368 transitions. Word has length 357 [2024-09-20 18:50:05,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:50:05,534 INFO L474 AbstractCegarLoop]: Abstraction has 367 states and 368 transitions. [2024-09-20 18:50:05,534 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.7884615384615383) internal successors, (145), 50 states have internal predecessors, (145), 45 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-20 18:50:05,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:50:05,534 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 368 transitions. [2024-09-20 18:50:05,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2024-09-20 18:50:05,535 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:50:05,535 INFO L216 NwaCegarLoop]: trace histogram [45, 45, 45, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:50:05,549 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2024-09-20 18:50:05,736 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2024-09-20 18:50:05,736 INFO L399 AbstractCegarLoop]: === Iteration 90 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:50:05,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:50:05,737 INFO L85 PathProgramCache]: Analyzing trace with hash -2089114549, now seen corresponding path program 87 times [2024-09-20 18:50:05,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:50:05,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556637910] [2024-09-20 18:50:05,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:50:05,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:50:05,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:50:08,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-20 18:50:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 18:50:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-20 18:50:08,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 18:50:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-20 18:50:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 18:50:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-20 18:50:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 18:50:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-20 18:50:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 18:50:08,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-20 18:50:08,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-20 18:50:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-20 18:50:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-20 18:50:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-20 18:50:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-20 18:50:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-20 18:50:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-20 18:50:08,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-20 18:50:08,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-20 18:50:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-20 18:50:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-20 18:50:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-20 18:50:08,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-20 18:50:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-20 18:50:08,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-20 18:50:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-20 18:50:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-20 18:50:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-20 18:50:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-20 18:50:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-20 18:50:08,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-20 18:50:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-20 18:50:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-20 18:50:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-09-20 18:50:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-20 18:50:08,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2024-09-20 18:50:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-20 18:50:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2024-09-20 18:50:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-20 18:50:08,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2024-09-20 18:50:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-20 18:50:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2024-09-20 18:50:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-20 18:50:08,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:08,626 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 2884 proven. 1120 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-20 18:50:08,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:50:08,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556637910] [2024-09-20 18:50:08,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556637910] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:50:08,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184571074] [2024-09-20 18:50:08,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:50:08,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:50:08,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:50:08,628 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:50:08,629 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2024-09-20 18:50:08,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2024-09-20 18:50:08,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:50:08,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-09-20 18:50:08,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:50:11,684 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 3014 proven. 990 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-20 18:50:11,684 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:50:14,040 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 3014 proven. 990 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-20 18:50:14,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184571074] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:50:14,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:50:14,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93, 93] total 140 [2024-09-20 18:50:14,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966317435] [2024-09-20 18:50:14,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:50:14,041 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 140 states [2024-09-20 18:50:14,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:50:14,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2024-09-20 18:50:14,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4375, Invalid=15085, Unknown=0, NotChecked=0, Total=19460 [2024-09-20 18:50:14,043 INFO L87 Difference]: Start difference. First operand 367 states and 368 transitions. Second operand has 140 states, 140 states have (on average 1.7) internal successors, (238), 140 states have internal predecessors, (238), 91 states have call successors, (92), 2 states have call predecessors, (92), 1 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2024-09-20 18:50:14,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:50:14,721 INFO L93 Difference]: Finished difference Result 511 states and 557 transitions. [2024-09-20 18:50:14,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-09-20 18:50:14,721 INFO L78 Accepts]: Start accepts. Automaton has has 140 states, 140 states have (on average 1.7) internal successors, (238), 140 states have internal predecessors, (238), 91 states have call successors, (92), 2 states have call predecessors, (92), 1 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) Word has length 364 [2024-09-20 18:50:14,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:50:14,724 INFO L225 Difference]: With dead ends: 511 [2024-09-20 18:50:14,724 INFO L226 Difference]: Without dead ends: 368 [2024-09-20 18:50:14,725 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 910 GetRequests, 683 SyntacticMatches, 89 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12716 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=4375, Invalid=15085, Unknown=0, NotChecked=0, Total=19460 [2024-09-20 18:50:14,725 INFO L434 NwaCegarLoop]: 98 mSDtfsCounter, 0 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 1311 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 18:50:14,725 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1055 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1311 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 18:50:14,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-09-20 18:50:14,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2024-09-20 18:50:14,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 274 states have (on average 1.0072992700729928) internal successors, (276), 275 states have internal predecessors, (276), 47 states have call successors, (47), 47 states have call predecessors, (47), 46 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-20 18:50:14,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 369 transitions. [2024-09-20 18:50:14,760 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 369 transitions. Word has length 364 [2024-09-20 18:50:14,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:50:14,760 INFO L474 AbstractCegarLoop]: Abstraction has 368 states and 369 transitions. [2024-09-20 18:50:14,760 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 140 states, 140 states have (on average 1.7) internal successors, (238), 140 states have internal predecessors, (238), 91 states have call successors, (92), 2 states have call predecessors, (92), 1 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2024-09-20 18:50:14,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:50:14,761 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 369 transitions. [2024-09-20 18:50:14,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2024-09-20 18:50:14,762 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:50:14,762 INFO L216 NwaCegarLoop]: trace histogram [45, 45, 45, 45, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:50:14,776 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2024-09-20 18:50:14,962 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,89 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:50:14,962 INFO L399 AbstractCegarLoop]: === Iteration 91 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:50:14,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:50:14,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1090170199, now seen corresponding path program 88 times [2024-09-20 18:50:14,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:50:14,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737831199] [2024-09-20 18:50:14,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:50:14,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:50:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:50:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 18:50:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-20 18:50:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 18:50:16,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-20 18:50:16,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 18:50:16,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-20 18:50:16,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 18:50:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-20 18:50:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 18:50:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-20 18:50:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 18:50:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-20 18:50:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-20 18:50:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-20 18:50:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-20 18:50:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-20 18:50:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-20 18:50:16,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-20 18:50:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-20 18:50:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-20 18:50:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-20 18:50:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-20 18:50:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-20 18:50:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-20 18:50:16,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-20 18:50:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-20 18:50:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-20 18:50:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-20 18:50:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-20 18:50:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-20 18:50:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-20 18:50:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-09-20 18:50:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-20 18:50:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-09-20 18:50:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-20 18:50:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-09-20 18:50:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-20 18:50:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2024-09-20 18:50:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-20 18:50:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2024-09-20 18:50:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-20 18:50:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2024-09-20 18:50:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-09-20 18:50:16,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2024-09-20 18:50:16,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:16,506 INFO L134 CoverageAnalysis]: Checked inductivity of 7833 backedges. 1078 proven. 2971 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-20 18:50:16,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:50:16,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737831199] [2024-09-20 18:50:16,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737831199] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:50:16,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115401849] [2024-09-20 18:50:16,506 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:50:16,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:50:16,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:50:16,511 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:50:16,512 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2024-09-20 18:50:16,627 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:50:16,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:50:16,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 884 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-09-20 18:50:16,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:50:16,811 INFO L134 CoverageAnalysis]: Checked inductivity of 7833 backedges. 1123 proven. 2926 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-20 18:50:16,812 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:50:18,082 INFO L134 CoverageAnalysis]: Checked inductivity of 7833 backedges. 1123 proven. 2926 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-20 18:50:18,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115401849] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:50:18,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:50:18,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 53 [2024-09-20 18:50:18,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271121504] [2024-09-20 18:50:18,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:50:18,083 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-09-20 18:50:18,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:50:18,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-09-20 18:50:18,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1141, Invalid=1615, Unknown=0, NotChecked=0, Total=2756 [2024-09-20 18:50:18,084 INFO L87 Difference]: Start difference. First operand 368 states and 369 transitions. Second operand has 53 states, 53 states have (on average 2.792452830188679) internal successors, (148), 51 states have internal predecessors, (148), 46 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-20 18:50:18,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:50:18,331 INFO L93 Difference]: Finished difference Result 381 states and 383 transitions. [2024-09-20 18:50:18,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-09-20 18:50:18,331 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.792452830188679) internal successors, (148), 51 states have internal predecessors, (148), 46 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Word has length 365 [2024-09-20 18:50:18,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:50:18,333 INFO L225 Difference]: With dead ends: 381 [2024-09-20 18:50:18,334 INFO L226 Difference]: Without dead ends: 379 [2024-09-20 18:50:18,334 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 914 GetRequests, 772 SyntacticMatches, 90 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2559 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1147, Invalid=1715, Unknown=0, NotChecked=0, Total=2862 [2024-09-20 18:50:18,334 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:50:18,334 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 159 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:50:18,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-09-20 18:50:18,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 375. [2024-09-20 18:50:18,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 279 states have (on average 1.007168458781362) internal successors, (281), 280 states have internal predecessors, (281), 48 states have call successors, (48), 48 states have call predecessors, (48), 47 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-20 18:50:18,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 376 transitions. [2024-09-20 18:50:18,373 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 376 transitions. Word has length 365 [2024-09-20 18:50:18,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:50:18,373 INFO L474 AbstractCegarLoop]: Abstraction has 375 states and 376 transitions. [2024-09-20 18:50:18,373 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.792452830188679) internal successors, (148), 51 states have internal predecessors, (148), 46 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-20 18:50:18,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:50:18,374 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 376 transitions. [2024-09-20 18:50:18,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2024-09-20 18:50:18,375 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:50:18,375 INFO L216 NwaCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:50:18,388 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2024-09-20 18:50:18,579 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,90 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:50:18,580 INFO L399 AbstractCegarLoop]: === Iteration 92 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:50:18,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:50:18,580 INFO L85 PathProgramCache]: Analyzing trace with hash 2137153516, now seen corresponding path program 89 times [2024-09-20 18:50:18,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:50:18,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185550452] [2024-09-20 18:50:18,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:50:18,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:50:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:50:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 18:50:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-20 18:50:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 18:50:21,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-20 18:50:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 18:50:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-20 18:50:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 18:50:21,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-20 18:50:21,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 18:50:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-20 18:50:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 18:50:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-20 18:50:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-20 18:50:21,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-20 18:50:21,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-20 18:50:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-20 18:50:21,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-20 18:50:21,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-20 18:50:21,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-20 18:50:21,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,334 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-20 18:50:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-20 18:50:21,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-20 18:50:21,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-20 18:50:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-20 18:50:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-20 18:50:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-20 18:50:21,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-20 18:50:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-20 18:50:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-20 18:50:21,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-20 18:50:21,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-20 18:50:21,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-09-20 18:50:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-20 18:50:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-09-20 18:50:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-20 18:50:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-09-20 18:50:21,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-20 18:50:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2024-09-20 18:50:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-20 18:50:21,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2024-09-20 18:50:21,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-20 18:50:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2024-09-20 18:50:21,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-09-20 18:50:21,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2024-09-20 18:50:21,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-20 18:50:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:21,359 INFO L134 CoverageAnalysis]: Checked inductivity of 8145 backedges. 3017 proven. 1168 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-20 18:50:21,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:50:21,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185550452] [2024-09-20 18:50:21,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185550452] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:50:21,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639505502] [2024-09-20 18:50:21,360 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:50:21,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:50:21,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:50:21,361 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:50:21,362 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2024-09-20 18:50:21,531 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2024-09-20 18:50:21,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:50:21,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-09-20 18:50:21,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:50:24,127 INFO L134 CoverageAnalysis]: Checked inductivity of 8145 backedges. 3150 proven. 1035 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-20 18:50:24,128 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:50:26,173 INFO L134 CoverageAnalysis]: Checked inductivity of 8145 backedges. 3150 proven. 1035 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-20 18:50:26,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639505502] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:50:26,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:50:26,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 143 [2024-09-20 18:50:26,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078381474] [2024-09-20 18:50:26,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:50:26,174 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 143 states [2024-09-20 18:50:26,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:50:26,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2024-09-20 18:50:26,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4564, Invalid=15742, Unknown=0, NotChecked=0, Total=20306 [2024-09-20 18:50:26,178 INFO L87 Difference]: Start difference. First operand 375 states and 376 transitions. Second operand has 143 states, 143 states have (on average 1.6993006993006994) internal successors, (243), 143 states have internal predecessors, (243), 93 states have call successors, (94), 2 states have call predecessors, (94), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2024-09-20 18:50:26,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:50:26,884 INFO L93 Difference]: Finished difference Result 522 states and 569 transitions. [2024-09-20 18:50:26,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-09-20 18:50:26,885 INFO L78 Accepts]: Start accepts. Automaton has has 143 states, 143 states have (on average 1.6993006993006994) internal successors, (243), 143 states have internal predecessors, (243), 93 states have call successors, (94), 2 states have call predecessors, (94), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) Word has length 372 [2024-09-20 18:50:26,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:50:26,887 INFO L225 Difference]: With dead ends: 522 [2024-09-20 18:50:26,887 INFO L226 Difference]: Without dead ends: 376 [2024-09-20 18:50:26,888 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 930 GetRequests, 698 SyntacticMatches, 91 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13275 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=4564, Invalid=15742, Unknown=0, NotChecked=0, Total=20306 [2024-09-20 18:50:26,888 INFO L434 NwaCegarLoop]: 100 mSDtfsCounter, 0 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 1593 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 1593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-20 18:50:26,889 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1123 Invalid, 1593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1593 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-20 18:50:26,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-09-20 18:50:26,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2024-09-20 18:50:26,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 280 states have (on average 1.0071428571428571) internal successors, (282), 281 states have internal predecessors, (282), 48 states have call successors, (48), 48 states have call predecessors, (48), 47 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-20 18:50:26,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 377 transitions. [2024-09-20 18:50:26,917 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 377 transitions. Word has length 372 [2024-09-20 18:50:26,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:50:26,917 INFO L474 AbstractCegarLoop]: Abstraction has 376 states and 377 transitions. [2024-09-20 18:50:26,917 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 143 states, 143 states have (on average 1.6993006993006994) internal successors, (243), 143 states have internal predecessors, (243), 93 states have call successors, (94), 2 states have call predecessors, (94), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2024-09-20 18:50:26,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:50:26,918 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 377 transitions. [2024-09-20 18:50:26,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2024-09-20 18:50:26,919 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:50:26,919 INFO L216 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:50:26,934 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2024-09-20 18:50:27,123 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,91 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:50:27,124 INFO L399 AbstractCegarLoop]: === Iteration 93 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:50:27,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:50:27,124 INFO L85 PathProgramCache]: Analyzing trace with hash 402562296, now seen corresponding path program 90 times [2024-09-20 18:50:27,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:50:27,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576864041] [2024-09-20 18:50:27,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:50:27,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:50:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:50:28,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-20 18:50:28,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 18:50:28,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 18:50:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 18:50:28,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-20 18:50:28,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 18:50:28,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-20 18:50:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 18:50:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-20 18:50:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 18:50:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-20 18:50:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 18:50:28,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-20 18:50:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-20 18:50:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-20 18:50:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-20 18:50:28,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-20 18:50:28,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 18:50:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-20 18:50:28,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-20 18:50:28,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-20 18:50:28,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-20 18:50:28,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-20 18:50:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-20 18:50:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-20 18:50:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-20 18:50:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-20 18:50:28,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-20 18:50:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-20 18:50:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-20 18:50:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-09-20 18:50:28,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-20 18:50:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-09-20 18:50:28,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-20 18:50:28,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-09-20 18:50:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-20 18:50:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-09-20 18:50:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-20 18:50:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2024-09-20 18:50:28,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2024-09-20 18:50:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2024-09-20 18:50:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-20 18:50:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2024-09-20 18:50:28,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-09-20 18:50:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2024-09-20 18:50:28,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:28,941 INFO L134 CoverageAnalysis]: Checked inductivity of 8191 backedges. 1125 proven. 3106 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-20 18:50:28,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:50:28,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576864041] [2024-09-20 18:50:28,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576864041] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:50:28,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717617785] [2024-09-20 18:50:28,941 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:50:28,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:50:28,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:50:28,943 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:50:28,944 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2024-09-20 18:50:29,116 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2024-09-20 18:50:29,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:50:29,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 903 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-09-20 18:50:29,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:50:29,331 INFO L134 CoverageAnalysis]: Checked inductivity of 8191 backedges. 1171 proven. 3060 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-20 18:50:29,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:50:31,060 INFO L134 CoverageAnalysis]: Checked inductivity of 8191 backedges. 1171 proven. 3060 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-20 18:50:31,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717617785] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:50:31,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:50:31,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 54 [2024-09-20 18:50:31,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022615262] [2024-09-20 18:50:31,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:50:31,061 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-09-20 18:50:31,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:50:31,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-09-20 18:50:31,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1189, Invalid=1673, Unknown=0, NotChecked=0, Total=2862 [2024-09-20 18:50:31,062 INFO L87 Difference]: Start difference. First operand 376 states and 377 transitions. Second operand has 54 states, 54 states have (on average 2.7962962962962963) internal successors, (151), 52 states have internal predecessors, (151), 47 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-20 18:50:31,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:50:31,337 INFO L93 Difference]: Finished difference Result 389 states and 391 transitions. [2024-09-20 18:50:31,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-09-20 18:50:31,338 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.7962962962962963) internal successors, (151), 52 states have internal predecessors, (151), 47 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 373 [2024-09-20 18:50:31,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:50:31,340 INFO L225 Difference]: With dead ends: 389 [2024-09-20 18:50:31,341 INFO L226 Difference]: Without dead ends: 387 [2024-09-20 18:50:31,341 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 934 GetRequests, 789 SyntacticMatches, 92 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2662 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1195, Invalid=1775, Unknown=0, NotChecked=0, Total=2970 [2024-09-20 18:50:31,341 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:50:31,341 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 132 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:50:31,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2024-09-20 18:50:31,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 383. [2024-09-20 18:50:31,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 285 states have (on average 1.0070175438596491) internal successors, (287), 286 states have internal predecessors, (287), 49 states have call successors, (49), 49 states have call predecessors, (49), 48 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-20 18:50:31,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 384 transitions. [2024-09-20 18:50:31,371 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 384 transitions. Word has length 373 [2024-09-20 18:50:31,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:50:31,372 INFO L474 AbstractCegarLoop]: Abstraction has 383 states and 384 transitions. [2024-09-20 18:50:31,372 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.7962962962962963) internal successors, (151), 52 states have internal predecessors, (151), 47 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-20 18:50:31,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:50:31,372 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 384 transitions. [2024-09-20 18:50:31,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2024-09-20 18:50:31,373 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:50:31,373 INFO L216 NwaCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:50:31,388 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2024-09-20 18:50:31,574 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,92 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:50:31,574 INFO L399 AbstractCegarLoop]: === Iteration 94 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:50:31,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:50:31,575 INFO L85 PathProgramCache]: Analyzing trace with hash -595539669, now seen corresponding path program 91 times [2024-09-20 18:50:31,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:50:31,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347155093] [2024-09-20 18:50:31,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:50:31,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:50:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:50:34,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-20 18:50:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 18:50:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 18:50:34,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 18:50:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-20 18:50:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 18:50:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-20 18:50:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 18:50:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-20 18:50:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 18:50:34,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-20 18:50:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 18:50:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-20 18:50:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-20 18:50:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-20 18:50:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-20 18:50:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-20 18:50:34,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 18:50:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-20 18:50:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-20 18:50:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-20 18:50:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-20 18:50:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-20 18:50:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-20 18:50:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-20 18:50:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-20 18:50:34,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-20 18:50:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-20 18:50:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-20 18:50:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-20 18:50:34,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-09-20 18:50:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-20 18:50:34,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-09-20 18:50:34,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-20 18:50:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-09-20 18:50:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-20 18:50:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-09-20 18:50:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-20 18:50:34,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2024-09-20 18:50:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2024-09-20 18:50:34,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2024-09-20 18:50:34,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-20 18:50:34,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2024-09-20 18:50:34,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-09-20 18:50:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2024-09-20 18:50:34,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2024-09-20 18:50:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,720 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 3153 proven. 1217 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-20 18:50:34,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:50:34,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347155093] [2024-09-20 18:50:34,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347155093] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:50:34,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274904502] [2024-09-20 18:50:34,721 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:50:34,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:50:34,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:50:34,722 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:50:34,727 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2024-09-20 18:50:34,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:34,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-09-20 18:50:34,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:50:37,897 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 3289 proven. 1081 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-20 18:50:37,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:50:40,423 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 3289 proven. 1081 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-20 18:50:40,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274904502] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:50:40,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:50:40,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 146 [2024-09-20 18:50:40,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015546640] [2024-09-20 18:50:40,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:50:40,425 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 146 states [2024-09-20 18:50:40,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:50:40,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2024-09-20 18:50:40,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4757, Invalid=16413, Unknown=0, NotChecked=0, Total=21170 [2024-09-20 18:50:40,428 INFO L87 Difference]: Start difference. First operand 383 states and 384 transitions. Second operand has 146 states, 146 states have (on average 1.6986301369863013) internal successors, (248), 146 states have internal predecessors, (248), 95 states have call successors, (96), 2 states have call predecessors, (96), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2024-09-20 18:50:41,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:50:41,059 INFO L93 Difference]: Finished difference Result 533 states and 581 transitions. [2024-09-20 18:50:41,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-09-20 18:50:41,059 INFO L78 Accepts]: Start accepts. Automaton has has 146 states, 146 states have (on average 1.6986301369863013) internal successors, (248), 146 states have internal predecessors, (248), 95 states have call successors, (96), 2 states have call predecessors, (96), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) Word has length 380 [2024-09-20 18:50:41,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:50:41,062 INFO L225 Difference]: With dead ends: 533 [2024-09-20 18:50:41,062 INFO L226 Difference]: Without dead ends: 384 [2024-09-20 18:50:41,063 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 950 GetRequests, 713 SyntacticMatches, 93 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13846 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=4757, Invalid=16413, Unknown=0, NotChecked=0, Total=21170 [2024-09-20 18:50:41,063 INFO L434 NwaCegarLoop]: 102 mSDtfsCounter, 0 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 18:50:41,063 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 727 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 18:50:41,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2024-09-20 18:50:41,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2024-09-20 18:50:41,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 286 states have (on average 1.006993006993007) internal successors, (288), 287 states have internal predecessors, (288), 49 states have call successors, (49), 49 states have call predecessors, (49), 48 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-20 18:50:41,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 385 transitions. [2024-09-20 18:50:41,122 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 385 transitions. Word has length 380 [2024-09-20 18:50:41,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:50:41,122 INFO L474 AbstractCegarLoop]: Abstraction has 384 states and 385 transitions. [2024-09-20 18:50:41,122 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 146 states, 146 states have (on average 1.6986301369863013) internal successors, (248), 146 states have internal predecessors, (248), 95 states have call successors, (96), 2 states have call predecessors, (96), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2024-09-20 18:50:41,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:50:41,123 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 385 transitions. [2024-09-20 18:50:41,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2024-09-20 18:50:41,124 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:50:41,124 INFO L216 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:50:41,136 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2024-09-20 18:50:41,324 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,93 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:50:41,325 INFO L399 AbstractCegarLoop]: === Iteration 95 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:50:41,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:50:41,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1522874935, now seen corresponding path program 92 times [2024-09-20 18:50:41,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:50:41,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55682410] [2024-09-20 18:50:41,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:50:41,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:50:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:50:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 18:50:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 18:50:43,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 18:50:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 18:50:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:50:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 18:50:43,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 18:50:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-20 18:50:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 18:50:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-20 18:50:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 18:50:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-20 18:50:43,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 18:50:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-20 18:50:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 18:50:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-20 18:50:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-20 18:50:43,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-20 18:50:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-20 18:50:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-20 18:50:43,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-20 18:50:43,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-20 18:50:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-20 18:50:43,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-20 18:50:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-20 18:50:43,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-20 18:50:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-20 18:50:43,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-20 18:50:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-20 18:50:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-20 18:50:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-20 18:50:43,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-09-20 18:50:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-20 18:50:43,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-09-20 18:50:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-20 18:50:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-09-20 18:50:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-20 18:50:43,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-09-20 18:50:43,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-20 18:50:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2024-09-20 18:50:43,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-09-20 18:50:43,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2024-09-20 18:50:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-20 18:50:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2024-09-20 18:50:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2024-09-20 18:50:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2024-09-20 18:50:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:43,322 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 1173 proven. 3244 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-20 18:50:43,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:50:43,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55682410] [2024-09-20 18:50:43,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55682410] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:50:43,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833092485] [2024-09-20 18:50:43,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:50:43,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:50:43,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:50:43,324 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:50:43,325 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2024-09-20 18:50:43,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:50:43,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:50:43,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 922 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-09-20 18:50:43,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:50:43,641 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 1220 proven. 3197 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-20 18:50:43,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:50:45,075 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 1220 proven. 3197 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-20 18:50:45,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833092485] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:50:45,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:50:45,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 52] total 55 [2024-09-20 18:50:45,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865281821] [2024-09-20 18:50:45,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:50:45,076 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-09-20 18:50:45,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:50:45,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-09-20 18:50:45,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1238, Invalid=1732, Unknown=0, NotChecked=0, Total=2970 [2024-09-20 18:50:45,078 INFO L87 Difference]: Start difference. First operand 384 states and 385 transitions. Second operand has 55 states, 55 states have (on average 2.8) internal successors, (154), 53 states have internal predecessors, (154), 48 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-20 18:50:45,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:50:45,316 INFO L93 Difference]: Finished difference Result 397 states and 399 transitions. [2024-09-20 18:50:45,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-09-20 18:50:45,317 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.8) internal successors, (154), 53 states have internal predecessors, (154), 48 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 381 [2024-09-20 18:50:45,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:50:45,319 INFO L225 Difference]: With dead ends: 397 [2024-09-20 18:50:45,319 INFO L226 Difference]: Without dead ends: 395 [2024-09-20 18:50:45,320 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 954 GetRequests, 804 SyntacticMatches, 96 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2863 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1244, Invalid=1836, Unknown=0, NotChecked=0, Total=3080 [2024-09-20 18:50:45,320 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:50:45,321 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 136 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:50:45,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2024-09-20 18:50:45,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 391. [2024-09-20 18:50:45,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 291 states have (on average 1.006872852233677) internal successors, (293), 292 states have internal predecessors, (293), 50 states have call successors, (50), 50 states have call predecessors, (50), 49 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-20 18:50:45,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 392 transitions. [2024-09-20 18:50:45,355 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 392 transitions. Word has length 381 [2024-09-20 18:50:45,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:50:45,356 INFO L474 AbstractCegarLoop]: Abstraction has 391 states and 392 transitions. [2024-09-20 18:50:45,356 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.8) internal successors, (154), 53 states have internal predecessors, (154), 48 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-20 18:50:45,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:50:45,356 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 392 transitions. [2024-09-20 18:50:45,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2024-09-20 18:50:45,357 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:50:45,357 INFO L216 NwaCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:50:45,373 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2024-09-20 18:50:45,561 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,94 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:50:45,562 INFO L399 AbstractCegarLoop]: === Iteration 96 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:50:45,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:50:45,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1209428212, now seen corresponding path program 93 times [2024-09-20 18:50:45,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:50:45,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285217712] [2024-09-20 18:50:45,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:50:45,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:50:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:50:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 18:50:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 18:50:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 18:50:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 18:50:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:50:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 18:50:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 18:50:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-20 18:50:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 18:50:48,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-20 18:50:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 18:50:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-20 18:50:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 18:50:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-20 18:50:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 18:50:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-20 18:50:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-20 18:50:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-20 18:50:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-20 18:50:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-20 18:50:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-20 18:50:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-20 18:50:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-20 18:50:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-20 18:50:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-20 18:50:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-20 18:50:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-20 18:50:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-20 18:50:48,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-20 18:50:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-20 18:50:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-20 18:50:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-09-20 18:50:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-20 18:50:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-09-20 18:50:48,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-20 18:50:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-09-20 18:50:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-20 18:50:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-09-20 18:50:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-20 18:50:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2024-09-20 18:50:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-09-20 18:50:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2024-09-20 18:50:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-20 18:50:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2024-09-20 18:50:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2024-09-20 18:50:48,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2024-09-20 18:50:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2024-09-20 18:50:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:48,822 INFO L134 CoverageAnalysis]: Checked inductivity of 8883 backedges. 3292 proven. 1267 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-20 18:50:48,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:50:48,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285217712] [2024-09-20 18:50:48,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285217712] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:50:48,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084416297] [2024-09-20 18:50:48,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:50:48,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:50:48,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:50:48,824 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:50:48,825 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2024-09-20 18:50:49,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2024-09-20 18:50:49,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:50:49,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-09-20 18:50:49,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:50:52,195 INFO L134 CoverageAnalysis]: Checked inductivity of 8883 backedges. 3431 proven. 1128 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-20 18:50:52,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:50:54,705 INFO L134 CoverageAnalysis]: Checked inductivity of 8883 backedges. 3431 proven. 1128 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-20 18:50:54,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084416297] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:50:54,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:50:54,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99, 99] total 149 [2024-09-20 18:50:54,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276514370] [2024-09-20 18:50:54,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:50:54,707 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2024-09-20 18:50:54,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:50:54,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2024-09-20 18:50:54,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4954, Invalid=17098, Unknown=0, NotChecked=0, Total=22052 [2024-09-20 18:50:54,711 INFO L87 Difference]: Start difference. First operand 391 states and 392 transitions. Second operand has 149 states, 149 states have (on average 1.6979865771812082) internal successors, (253), 149 states have internal predecessors, (253), 97 states have call successors, (98), 2 states have call predecessors, (98), 1 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2024-09-20 18:50:55,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:50:55,409 INFO L93 Difference]: Finished difference Result 544 states and 593 transitions. [2024-09-20 18:50:55,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-09-20 18:50:55,411 INFO L78 Accepts]: Start accepts. Automaton has has 149 states, 149 states have (on average 1.6979865771812082) internal successors, (253), 149 states have internal predecessors, (253), 97 states have call successors, (98), 2 states have call predecessors, (98), 1 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) Word has length 388 [2024-09-20 18:50:55,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:50:55,413 INFO L225 Difference]: With dead ends: 544 [2024-09-20 18:50:55,413 INFO L226 Difference]: Without dead ends: 392 [2024-09-20 18:50:55,414 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 970 GetRequests, 728 SyntacticMatches, 95 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14429 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=4954, Invalid=17098, Unknown=0, NotChecked=0, Total=22052 [2024-09-20 18:50:55,415 INFO L434 NwaCegarLoop]: 104 mSDtfsCounter, 0 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 1443 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 18:50:55,415 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 905 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1443 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 18:50:55,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-09-20 18:50:55,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2024-09-20 18:50:55,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 292 states have (on average 1.0068493150684932) internal successors, (294), 293 states have internal predecessors, (294), 50 states have call successors, (50), 50 states have call predecessors, (50), 49 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-20 18:50:55,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 393 transitions. [2024-09-20 18:50:55,446 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 393 transitions. Word has length 388 [2024-09-20 18:50:55,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:50:55,446 INFO L474 AbstractCegarLoop]: Abstraction has 392 states and 393 transitions. [2024-09-20 18:50:55,446 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 1.6979865771812082) internal successors, (253), 149 states have internal predecessors, (253), 97 states have call successors, (98), 2 states have call predecessors, (98), 1 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2024-09-20 18:50:55,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:50:55,447 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 393 transitions. [2024-09-20 18:50:55,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2024-09-20 18:50:55,448 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:50:55,448 INFO L216 NwaCegarLoop]: trace histogram [48, 48, 48, 48, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:50:55,461 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2024-09-20 18:50:55,652 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,95 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:50:55,652 INFO L399 AbstractCegarLoop]: === Iteration 97 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:50:55,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:50:55,653 INFO L85 PathProgramCache]: Analyzing trace with hash -631096296, now seen corresponding path program 94 times [2024-09-20 18:50:55,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:50:55,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595616921] [2024-09-20 18:50:55,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:50:55,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:50:55,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:50:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 18:50:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 18:50:57,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 18:50:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 18:50:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-20 18:50:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 18:50:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 18:50:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 18:50:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-20 18:50:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 18:50:57,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-20 18:50:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 18:50:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-20 18:50:57,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 18:50:57,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-20 18:50:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-20 18:50:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-20 18:50:57,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-20 18:50:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-20 18:50:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-20 18:50:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-20 18:50:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-20 18:50:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-20 18:50:57,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-20 18:50:57,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-20 18:50:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-20 18:50:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-20 18:50:57,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-20 18:50:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-20 18:50:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-20 18:50:57,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-20 18:50:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-20 18:50:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-09-20 18:50:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-20 18:50:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-09-20 18:50:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-20 18:50:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-09-20 18:50:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-20 18:50:57,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-09-20 18:50:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-20 18:50:57,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2024-09-20 18:50:57,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2024-09-20 18:50:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2024-09-20 18:50:57,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-20 18:50:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2024-09-20 18:50:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2024-09-20 18:50:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2024-09-20 18:50:57,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:50:57,481 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 1222 proven. 3385 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-20 18:50:57,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:50:57,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595616921] [2024-09-20 18:50:57,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595616921] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:50:57,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039858069] [2024-09-20 18:50:57,481 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:50:57,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:50:57,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:50:57,483 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)