./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/down.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 27b49876 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/down.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 d487f6cb836d5c7294168f7ececc6a4515780c0860389f79570a9c0e20e7bcc0 --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-27b4987-m [2024-09-21 11:23:49,043 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-21 11:23:49,097 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-21 11:23:49,101 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-21 11:23:49,102 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-21 11:23:49,125 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-21 11:23:49,126 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-21 11:23:49,126 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-21 11:23:49,126 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-21 11:23:49,127 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-21 11:23:49,127 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-21 11:23:49,127 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-21 11:23:49,128 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-21 11:23:49,128 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-21 11:23:49,128 INFO L153 SettingsManager]: * Use SBE=true [2024-09-21 11:23:49,128 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-21 11:23:49,129 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-21 11:23:49,129 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-21 11:23:49,129 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-21 11:23:49,130 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-21 11:23:49,130 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-21 11:23:49,134 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-21 11:23:49,134 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-21 11:23:49,135 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-21 11:23:49,135 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-21 11:23:49,135 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-21 11:23:49,135 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-21 11:23:49,136 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-21 11:23:49,136 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-21 11:23:49,136 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-21 11:23:49,136 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-21 11:23:49,137 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-21 11:23:49,137 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 11:23:49,137 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-21 11:23:49,137 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-21 11:23:49,137 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-21 11:23:49,138 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-21 11:23:49,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-21 11:23:49,138 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-21 11:23:49,138 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-21 11:23:49,138 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-21 11:23:49,142 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-21 11:23:49,142 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d487f6cb836d5c7294168f7ececc6a4515780c0860389f79570a9c0e20e7bcc0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-21 11:23:49,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-21 11:23:49,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-21 11:23:49,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-21 11:23:49,350 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-21 11:23:49,351 INFO L274 PluginConnector]: CDTParser initialized [2024-09-21 11:23:49,352 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-invgen/down.i [2024-09-21 11:23:50,742 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-21 11:23:50,884 INFO L384 CDTParser]: Found 1 translation units. [2024-09-21 11:23:50,885 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/down.i [2024-09-21 11:23:50,890 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/430158014/b0288c2f19f645f4aa1e844972d4ec0a/FLAGa599b8854 [2024-09-21 11:23:51,312 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/430158014/b0288c2f19f645f4aa1e844972d4ec0a [2024-09-21 11:23:51,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-21 11:23:51,316 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-21 11:23:51,321 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-21 11:23:51,321 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-21 11:23:51,325 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-21 11:23:51,327 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:23:51" (1/1) ... [2024-09-21 11:23:51,327 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8efab13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:51, skipping insertion in model container [2024-09-21 11:23:51,328 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:23:51" (1/1) ... [2024-09-21 11:23:51,342 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-21 11:23:51,441 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/down.i[893,906] [2024-09-21 11:23:51,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 11:23:51,460 INFO L200 MainTranslator]: Completed pre-run [2024-09-21 11:23:51,469 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/down.i[893,906] [2024-09-21 11:23:51,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 11:23:51,483 INFO L204 MainTranslator]: Completed translation [2024-09-21 11:23:51,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:51 WrapperNode [2024-09-21 11:23:51,483 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-21 11:23:51,484 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-21 11:23:51,484 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-21 11:23:51,484 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-21 11:23:51,489 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:51" (1/1) ... [2024-09-21 11:23:51,493 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:51" (1/1) ... [2024-09-21 11:23:51,497 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-21 11:23:51,497 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-21 11:23:51,498 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-21 11:23:51,498 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-21 11:23:51,498 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-21 11:23:51,504 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:51" (1/1) ... [2024-09-21 11:23:51,505 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:51" (1/1) ... [2024-09-21 11:23:51,505 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:51" (1/1) ... [2024-09-21 11:23:51,513 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]. [2024-09-21 11:23:51,513 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:51" (1/1) ... [2024-09-21 11:23:51,513 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:51" (1/1) ... [2024-09-21 11:23:51,531 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:51" (1/1) ... [2024-09-21 11:23:51,535 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:51" (1/1) ... [2024-09-21 11:23:51,537 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:51" (1/1) ... [2024-09-21 11:23:51,537 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:51" (1/1) ... [2024-09-21 11:23:51,538 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-21 11:23:51,539 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-21 11:23:51,539 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-21 11:23:51,539 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-21 11:23:51,540 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:51" (1/1) ... [2024-09-21 11:23:51,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 11:23:51,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:23:51,570 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) [2024-09-21 11:23:51,573 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 [2024-09-21 11:23:51,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-21 11:23:51,609 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-21 11:23:51,609 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-21 11:23:51,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-21 11:23:51,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-21 11:23:51,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-21 11:23:51,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-21 11:23:51,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-21 11:23:51,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-21 11:23:51,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-21 11:23:51,660 INFO L242 CfgBuilder]: Building ICFG [2024-09-21 11:23:51,662 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-21 11:23:51,761 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-09-21 11:23:51,761 INFO L291 CfgBuilder]: Performing block encoding [2024-09-21 11:23:51,777 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-21 11:23:51,777 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-21 11:23:51,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:23:51 BoogieIcfgContainer [2024-09-21 11:23:51,777 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-21 11:23:51,779 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-21 11:23:51,779 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-21 11:23:51,781 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-21 11:23:51,781 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:23:51" (1/3) ... [2024-09-21 11:23:51,782 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7502f35a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:23:51, skipping insertion in model container [2024-09-21 11:23:51,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:51" (2/3) ... [2024-09-21 11:23:51,782 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7502f35a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:23:51, skipping insertion in model container [2024-09-21 11:23:51,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:23:51" (3/3) ... [2024-09-21 11:23:51,783 INFO L112 eAbstractionObserver]: Analyzing ICFG down.i [2024-09-21 11:23:51,794 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-21 11:23:51,795 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-21 11:23:51,830 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-21 11:23:51,835 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@542f97e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-21 11:23:51,835 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-21 11:23:51,838 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) [2024-09-21 11:23:51,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-21 11:23:51,843 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:23:51,843 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:23:51,843 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:23:51,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:23:51,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1421332849, now seen corresponding path program 1 times [2024-09-21 11:23:51,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:23:51,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984936461] [2024-09-21 11:23:51,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:23:51,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:23:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:51,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:23:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:51,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 11:23:51,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:23:51,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984936461] [2024-09-21 11:23:51,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984936461] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 11:23:51,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 11:23:51,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-21 11:23:51,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169173675] [2024-09-21 11:23:51,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:23:51,973 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-21 11:23:51,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:23:51,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-21 11:23:51,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-21 11:23:51,990 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) [2024-09-21 11:23:52,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:23:52,005 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2024-09-21 11:23:52,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-21 11:23:52,006 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 [2024-09-21 11:23:52,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:23:52,010 INFO L225 Difference]: With dead ends: 34 [2024-09-21 11:23:52,010 INFO L226 Difference]: Without dead ends: 16 [2024-09-21 11:23:52,012 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 [2024-09-21 11:23:52,015 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-21 11:23:52,015 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 11:23:52,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-09-21 11:23:52,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-09-21 11:23:52,036 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) [2024-09-21 11:23:52,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2024-09-21 11:23:52,037 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2024-09-21 11:23:52,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:23:52,038 INFO L474 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2024-09-21 11:23:52,038 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) [2024-09-21 11:23:52,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:23:52,041 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2024-09-21 11:23:52,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-21 11:23:52,042 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:23:52,042 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:23:52,042 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-21 11:23:52,042 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:23:52,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:23:52,043 INFO L85 PathProgramCache]: Analyzing trace with hash -676380277, now seen corresponding path program 1 times [2024-09-21 11:23:52,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:23:52,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731482685] [2024-09-21 11:23:52,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:23:52,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:23:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:52,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:23:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:52,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 11:23:52,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:23:52,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731482685] [2024-09-21 11:23:52,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731482685] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 11:23:52,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 11:23:52,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-21 11:23:52,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378234308] [2024-09-21 11:23:52,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:23:52,179 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-21 11:23:52,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:23:52,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-21 11:23:52,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-21 11:23:52,180 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) [2024-09-21 11:23:52,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:23:52,202 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2024-09-21 11:23:52,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-21 11:23:52,202 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 [2024-09-21 11:23:52,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:23:52,203 INFO L225 Difference]: With dead ends: 28 [2024-09-21 11:23:52,203 INFO L226 Difference]: Without dead ends: 17 [2024-09-21 11:23:52,203 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-21 11:23:52,204 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-21 11:23:52,204 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 11:23:52,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-09-21 11:23:52,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-09-21 11:23:52,207 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) [2024-09-21 11:23:52,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2024-09-21 11:23:52,208 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 12 [2024-09-21 11:23:52,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:23:52,209 INFO L474 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-09-21 11:23:52,209 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) [2024-09-21 11:23:52,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:23:52,209 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2024-09-21 11:23:52,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-21 11:23:52,209 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:23:52,209 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:23:52,209 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-21 11:23:52,210 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:23:52,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:23:52,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1610812905, now seen corresponding path program 1 times [2024-09-21 11:23:52,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:23:52,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843495361] [2024-09-21 11:23:52,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:23:52,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:23:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:52,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:23:52,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:52,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 11:23:52,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:23:52,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843495361] [2024-09-21 11:23:52,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843495361] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:23:52,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983293882] [2024-09-21 11:23:52,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:23:52,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:23:52,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:23:52,317 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) [2024-09-21 11:23:52,323 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-21 11:23:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:52,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-21 11:23:52,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:23:52,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 11:23:52,414 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-21 11:23:52,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983293882] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 11:23:52,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-21 11:23:52,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2024-09-21 11:23:52,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718420542] [2024-09-21 11:23:52,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:23:52,416 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-21 11:23:52,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:23:52,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-21 11:23:52,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-09-21 11:23:52,417 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) [2024-09-21 11:23:52,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:23:52,450 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2024-09-21 11:23:52,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-21 11:23:52,450 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 [2024-09-21 11:23:52,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:23:52,452 INFO L225 Difference]: With dead ends: 29 [2024-09-21 11:23:52,452 INFO L226 Difference]: Without dead ends: 27 [2024-09-21 11:23:52,452 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 [2024-09-21 11:23:52,453 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 [2024-09-21 11:23:52,453 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] [2024-09-21 11:23:52,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-21 11:23:52,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2024-09-21 11:23:52,459 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) [2024-09-21 11:23:52,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2024-09-21 11:23:52,459 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 13 [2024-09-21 11:23:52,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:23:52,460 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2024-09-21 11:23:52,460 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) [2024-09-21 11:23:52,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:23:52,460 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2024-09-21 11:23:52,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-21 11:23:52,461 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:23:52,461 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:23:52,475 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-21 11:23:52,661 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 [2024-09-21 11:23:52,662 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:23:52,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:23:52,663 INFO L85 PathProgramCache]: Analyzing trace with hash -2016151891, now seen corresponding path program 1 times [2024-09-21 11:23:52,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:23:52,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995352734] [2024-09-21 11:23:52,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:23:52,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:23:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:52,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:23:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:52,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-09-21 11:23:52,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:52,849 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 11:23:52,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:23:52,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995352734] [2024-09-21 11:23:52,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995352734] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:23:52,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210457426] [2024-09-21 11:23:52,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:23:52,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:23:52,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:23:52,858 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) [2024-09-21 11:23:52,860 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-21 11:23:52,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:52,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-21 11:23:52,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:23:52,928 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 11:23:52,931 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:23:52,974 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 11:23:52,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210457426] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:23:52,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:23:52,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2024-09-21 11:23:52,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293198905] [2024-09-21 11:23:52,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:23:52,975 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-21 11:23:52,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:23:52,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-21 11:23:52,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-21 11:23:52,976 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-21 11:23:53,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:23:53,000 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2024-09-21 11:23:53,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-21 11:23:53,001 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2024-09-21 11:23:53,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:23:53,002 INFO L225 Difference]: With dead ends: 38 [2024-09-21 11:23:53,002 INFO L226 Difference]: Without dead ends: 24 [2024-09-21 11:23:53,002 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-21 11:23:53,003 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 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 [2024-09-21 11:23:53,003 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 11:23:53,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-21 11:23:53,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-09-21 11:23:53,007 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) [2024-09-21 11:23:53,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-09-21 11:23:53,007 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 20 [2024-09-21 11:23:53,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:23:53,007 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-09-21 11:23:53,008 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-21 11:23:53,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:23:53,008 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2024-09-21 11:23:53,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-21 11:23:53,008 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:23:53,009 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:23:53,025 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-21 11:23:53,212 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 [2024-09-21 11:23:53,213 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:23:53,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:23:53,214 INFO L85 PathProgramCache]: Analyzing trace with hash -723625159, now seen corresponding path program 2 times [2024-09-21 11:23:53,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:23:53,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587864814] [2024-09-21 11:23:53,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:23:53,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:23:53,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:53,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:23:53,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:53,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 11:23:53,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:53,321 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 11:23:53,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:23:53,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587864814] [2024-09-21 11:23:53,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587864814] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:23:53,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445257350] [2024-09-21 11:23:53,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 11:23:53,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:23:53,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:23:53,324 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) [2024-09-21 11:23:53,328 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-21 11:23:53,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 11:23:53,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:23:53,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-21 11:23:53,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:23:53,471 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 11:23:53,473 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:23:53,543 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 11:23:53,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445257350] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:23:53,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:23:53,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-09-21 11:23:53,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154808195] [2024-09-21 11:23:53,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:23:53,544 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-21 11:23:53,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:23:53,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-21 11:23:53,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-21 11:23:53,545 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) [2024-09-21 11:23:53,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:23:53,615 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2024-09-21 11:23:53,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-21 11:23:53,615 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 [2024-09-21 11:23:53,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:23:53,616 INFO L225 Difference]: With dead ends: 37 [2024-09-21 11:23:53,616 INFO L226 Difference]: Without dead ends: 35 [2024-09-21 11:23:53,617 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 [2024-09-21 11:23:53,617 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:23:53,617 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 53 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:23:53,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-21 11:23:53,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2024-09-21 11:23:53,633 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) [2024-09-21 11:23:53,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2024-09-21 11:23:53,634 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 21 [2024-09-21 11:23:53,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:23:53,634 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2024-09-21 11:23:53,634 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) [2024-09-21 11:23:53,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:23:53,634 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2024-09-21 11:23:53,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-21 11:23:53,635 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:23:53,635 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:23:53,647 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-21 11:23:53,835 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 [2024-09-21 11:23:53,835 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:23:53,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:23:53,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1797415755, now seen corresponding path program 3 times [2024-09-21 11:23:53,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:23:53,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924121515] [2024-09-21 11:23:53,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:23:53,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:23:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:53,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:23:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:53,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-21 11:23:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:53,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-21 11:23:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:54,002 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-21 11:23:54,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:23:54,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924121515] [2024-09-21 11:23:54,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924121515] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:23:54,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697016983] [2024-09-21 11:23:54,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-21 11:23:54,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:23:54,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:23:54,009 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) [2024-09-21 11:23:54,011 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-21 11:23:54,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-21 11:23:54,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:23:54,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-21 11:23:54,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:23:54,081 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-21 11:23:54,082 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:23:54,136 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-21 11:23:54,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697016983] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:23:54,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:23:54,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 10 [2024-09-21 11:23:54,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497813931] [2024-09-21 11:23:54,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:23:54,138 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-21 11:23:54,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:23:54,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-21 11:23:54,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-09-21 11:23:54,139 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-21 11:23:54,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:23:54,174 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2024-09-21 11:23:54,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-21 11:23:54,175 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2024-09-21 11:23:54,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:23:54,175 INFO L225 Difference]: With dead ends: 49 [2024-09-21 11:23:54,175 INFO L226 Difference]: Without dead ends: 32 [2024-09-21 11:23:54,176 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 6 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-09-21 11:23:54,176 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-21 11:23:54,177 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 11:23:54,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-21 11:23:54,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-09-21 11:23:54,181 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) [2024-09-21 11:23:54,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2024-09-21 11:23:54,181 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 28 [2024-09-21 11:23:54,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:23:54,182 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2024-09-21 11:23:54,182 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-21 11:23:54,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:23:54,182 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2024-09-21 11:23:54,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-21 11:23:54,183 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:23:54,183 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:23:54,195 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-21 11:23:54,383 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 [2024-09-21 11:23:54,384 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:23:54,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:23:54,384 INFO L85 PathProgramCache]: Analyzing trace with hash -554337321, now seen corresponding path program 4 times [2024-09-21 11:23:54,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:23:54,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78614553] [2024-09-21 11:23:54,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:23:54,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:23:54,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:54,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:23:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:54,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-21 11:23:54,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:54,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-21 11:23:54,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:54,509 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-21 11:23:54,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:23:54,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78614553] [2024-09-21 11:23:54,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78614553] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:23:54,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41283419] [2024-09-21 11:23:54,512 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-21 11:23:54,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:23:54,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:23:54,513 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) [2024-09-21 11:23:54,515 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-21 11:23:54,552 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-21 11:23:54,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:23:54,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-21 11:23:54,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:23:54,601 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-21 11:23:54,601 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:23:54,650 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-21 11:23:54,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41283419] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:23:54,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:23:54,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2024-09-21 11:23:54,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728689993] [2024-09-21 11:23:54,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:23:54,651 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-21 11:23:54,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:23:54,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-21 11:23:54,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-09-21 11:23:54,652 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) [2024-09-21 11:23:54,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:23:54,706 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2024-09-21 11:23:54,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-21 11:23:54,706 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 [2024-09-21 11:23:54,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:23:54,707 INFO L225 Difference]: With dead ends: 45 [2024-09-21 11:23:54,707 INFO L226 Difference]: Without dead ends: 43 [2024-09-21 11:23:54,708 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 [2024-09-21 11:23:54,708 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-21 11:23:54,709 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 72 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 11:23:54,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-21 11:23:54,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2024-09-21 11:23:54,717 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) [2024-09-21 11:23:54,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2024-09-21 11:23:54,718 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 29 [2024-09-21 11:23:54,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:23:54,718 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2024-09-21 11:23:54,718 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) [2024-09-21 11:23:54,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:23:54,718 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2024-09-21 11:23:54,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-21 11:23:54,719 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:23:54,719 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:23:54,732 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-21 11:23:54,919 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 [2024-09-21 11:23:54,920 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:23:54,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:23:54,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1807807725, now seen corresponding path program 5 times [2024-09-21 11:23:54,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:23:54,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14117940] [2024-09-21 11:23:54,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:23:54,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:23:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:55,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:23:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:55,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-21 11:23:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:55,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-21 11:23:55,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:55,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-21 11:23:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:55,039 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-21 11:23:55,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:23:55,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14117940] [2024-09-21 11:23:55,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14117940] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:23:55,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704135328] [2024-09-21 11:23:55,042 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-21 11:23:55,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:23:55,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:23:55,043 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) [2024-09-21 11:23:55,045 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-21 11:23:55,079 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-09-21 11:23:55,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:23:55,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-21 11:23:55,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:23:55,112 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-21 11:23:55,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:23:55,177 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-21 11:23:55,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704135328] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:23:55,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:23:55,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 12 [2024-09-21 11:23:55,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375493529] [2024-09-21 11:23:55,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:23:55,178 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-21 11:23:55,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:23:55,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-21 11:23:55,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-09-21 11:23:55,180 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 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) [2024-09-21 11:23:55,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:23:55,231 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2024-09-21 11:23:55,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-21 11:23:55,232 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 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 36 [2024-09-21 11:23:55,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:23:55,233 INFO L225 Difference]: With dead ends: 60 [2024-09-21 11:23:55,233 INFO L226 Difference]: Without dead ends: 40 [2024-09-21 11:23:55,233 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 72 SyntacticMatches, 8 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-09-21 11:23:55,235 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-21 11:23:55,236 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 11:23:55,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-21 11:23:55,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-09-21 11:23:55,244 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) [2024-09-21 11:23:55,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2024-09-21 11:23:55,245 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 36 [2024-09-21 11:23:55,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:23:55,245 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2024-09-21 11:23:55,245 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 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) [2024-09-21 11:23:55,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:23:55,246 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2024-09-21 11:23:55,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-21 11:23:55,246 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:23:55,246 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:23:55,262 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-21 11:23:55,447 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 [2024-09-21 11:23:55,448 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:23:55,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:23:55,448 INFO L85 PathProgramCache]: Analyzing trace with hash -597114503, now seen corresponding path program 6 times [2024-09-21 11:23:55,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:23:55,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074848846] [2024-09-21 11:23:55,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:23:55,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:23:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:55,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:23:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:55,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-21 11:23:55,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:55,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-21 11:23:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:55,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-21 11:23:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:55,531 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-21 11:23:55,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:23:55,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074848846] [2024-09-21 11:23:55,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074848846] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:23:55,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386744229] [2024-09-21 11:23:55,531 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-21 11:23:55,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:23:55,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:23:55,533 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) [2024-09-21 11:23:55,535 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-21 11:23:55,567 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-09-21 11:23:55,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:23:55,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-21 11:23:55,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:23:55,605 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-21 11:23:55,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:23:55,660 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-21 11:23:55,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386744229] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:23:55,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:23:55,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-09-21 11:23:55,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472768654] [2024-09-21 11:23:55,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:23:55,661 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-21 11:23:55,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:23:55,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-21 11:23:55,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-09-21 11:23:55,661 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) [2024-09-21 11:23:55,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:23:55,711 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2024-09-21 11:23:55,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-21 11:23:55,711 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 [2024-09-21 11:23:55,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:23:55,712 INFO L225 Difference]: With dead ends: 53 [2024-09-21 11:23:55,712 INFO L226 Difference]: Without dead ends: 51 [2024-09-21 11:23:55,712 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 [2024-09-21 11:23:55,712 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-21 11:23:55,712 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 59 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 11:23:55,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-09-21 11:23:55,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2024-09-21 11:23:55,719 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) [2024-09-21 11:23:55,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2024-09-21 11:23:55,720 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 37 [2024-09-21 11:23:55,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:23:55,720 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2024-09-21 11:23:55,720 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) [2024-09-21 11:23:55,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:23:55,720 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2024-09-21 11:23:55,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-21 11:23:55,721 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:23:55,721 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:23:55,733 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-21 11:23:55,925 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 [2024-09-21 11:23:55,926 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:23:55,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:23:55,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1686402315, now seen corresponding path program 7 times [2024-09-21 11:23:55,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:23:55,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263139619] [2024-09-21 11:23:55,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:23:55,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:23:55,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:56,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:23:56,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:56,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-21 11:23:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:56,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-21 11:23:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:56,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-21 11:23:56,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:56,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-21 11:23:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:56,061 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-21 11:23:56,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:23:56,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263139619] [2024-09-21 11:23:56,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263139619] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:23:56,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224153395] [2024-09-21 11:23:56,062 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-21 11:23:56,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:23:56,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:23:56,065 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) [2024-09-21 11:23:56,067 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-21 11:23:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:56,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-21 11:23:56,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:23:56,133 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-21 11:23:56,134 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:23:56,221 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-21 11:23:56,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224153395] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:23:56,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:23:56,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 14 [2024-09-21 11:23:56,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343299414] [2024-09-21 11:23:56,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:23:56,222 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-21 11:23:56,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:23:56,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-21 11:23:56,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-09-21 11:23:56,223 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 6 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-21 11:23:56,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:23:56,271 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2024-09-21 11:23:56,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-21 11:23:56,271 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 6 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 44 [2024-09-21 11:23:56,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:23:56,272 INFO L225 Difference]: With dead ends: 71 [2024-09-21 11:23:56,273 INFO L226 Difference]: Without dead ends: 48 [2024-09-21 11:23:56,274 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 88 SyntacticMatches, 10 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-09-21 11:23:56,274 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-21 11:23:56,274 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 11:23:56,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-21 11:23:56,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-09-21 11:23:56,280 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) [2024-09-21 11:23:56,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2024-09-21 11:23:56,282 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 44 [2024-09-21 11:23:56,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:23:56,282 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2024-09-21 11:23:56,282 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 6 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-21 11:23:56,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:23:56,282 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2024-09-21 11:23:56,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-09-21 11:23:56,285 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:23:56,285 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:23:56,297 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-21 11:23:56,485 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 [2024-09-21 11:23:56,486 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:23:56,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:23:56,487 INFO L85 PathProgramCache]: Analyzing trace with hash -603130473, now seen corresponding path program 8 times [2024-09-21 11:23:56,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:23:56,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715905435] [2024-09-21 11:23:56,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:23:56,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:23:56,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:56,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:23:56,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:56,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-21 11:23:56,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:56,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-21 11:23:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:56,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-21 11:23:56,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:56,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-21 11:23:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:56,594 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 18 proven. 31 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-21 11:23:56,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:23:56,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715905435] [2024-09-21 11:23:56,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715905435] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:23:56,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343082802] [2024-09-21 11:23:56,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 11:23:56,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:23:56,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:23:56,597 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) [2024-09-21 11:23:56,605 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-21 11:23:56,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 11:23:56,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:23:56,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-21 11:23:56,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:23:56,679 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-21 11:23:56,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:23:56,760 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-21 11:23:56,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343082802] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:23:56,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:23:56,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 13 [2024-09-21 11:23:56,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688641001] [2024-09-21 11:23:56,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:23:56,761 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-21 11:23:56,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:23:56,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-21 11:23:56,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-09-21 11:23:56,762 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) [2024-09-21 11:23:56,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:23:56,812 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2024-09-21 11:23:56,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-21 11:23:56,813 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 [2024-09-21 11:23:56,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:23:56,813 INFO L225 Difference]: With dead ends: 61 [2024-09-21 11:23:56,814 INFO L226 Difference]: Without dead ends: 59 [2024-09-21 11:23:56,815 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 [2024-09-21 11:23:56,815 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-21 11:23:56,815 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 87 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 11:23:56,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-21 11:23:56,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2024-09-21 11:23:56,823 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) [2024-09-21 11:23:56,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2024-09-21 11:23:56,824 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 45 [2024-09-21 11:23:56,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:23:56,825 INFO L474 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2024-09-21 11:23:56,825 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) [2024-09-21 11:23:56,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:23:56,825 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2024-09-21 11:23:56,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-09-21 11:23:56,826 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:23:56,826 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:23:56,841 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-21 11:23:57,026 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 [2024-09-21 11:23:57,027 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:23:57,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:23:57,027 INFO L85 PathProgramCache]: Analyzing trace with hash 769721133, now seen corresponding path program 9 times [2024-09-21 11:23:57,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:23:57,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651570206] [2024-09-21 11:23:57,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:23:57,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:23:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:57,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:23:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:57,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-21 11:23:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:57,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-21 11:23:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:57,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-21 11:23:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:57,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-21 11:23:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:57,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-21 11:23:57,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:57,169 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-21 11:23:57,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:23:57,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651570206] [2024-09-21 11:23:57,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651570206] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:23:57,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800251214] [2024-09-21 11:23:57,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-21 11:23:57,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:23:57,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:23:57,177 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) [2024-09-21 11:23:57,179 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-21 11:23:57,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-21 11:23:57,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:23:57,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-21 11:23:57,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:23:57,268 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-21 11:23:57,269 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:23:57,422 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-21 11:23:57,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800251214] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:23:57,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:23:57,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 16 [2024-09-21 11:23:57,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852014388] [2024-09-21 11:23:57,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:23:57,423 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-21 11:23:57,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:23:57,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-21 11:23:57,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2024-09-21 11:23:57,424 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 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) [2024-09-21 11:23:57,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:23:57,499 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2024-09-21 11:23:57,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-21 11:23:57,500 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 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 52 [2024-09-21 11:23:57,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:23:57,501 INFO L225 Difference]: With dead ends: 82 [2024-09-21 11:23:57,501 INFO L226 Difference]: Without dead ends: 56 [2024-09-21 11:23:57,501 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 104 SyntacticMatches, 12 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2024-09-21 11:23:57,501 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 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 [2024-09-21 11:23:57,502 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:23:57,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-09-21 11:23:57,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-09-21 11:23:57,508 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) [2024-09-21 11:23:57,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2024-09-21 11:23:57,509 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 52 [2024-09-21 11:23:57,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:23:57,509 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2024-09-21 11:23:57,509 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 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) [2024-09-21 11:23:57,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:23:57,509 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2024-09-21 11:23:57,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-09-21 11:23:57,513 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:23:57,513 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:23:57,525 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-09-21 11:23:57,713 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 [2024-09-21 11:23:57,714 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:23:57,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:23:57,714 INFO L85 PathProgramCache]: Analyzing trace with hash -363448391, now seen corresponding path program 10 times [2024-09-21 11:23:57,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:23:57,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105456981] [2024-09-21 11:23:57,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:23:57,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:23:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:57,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:23:57,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:57,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-21 11:23:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:57,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-21 11:23:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:57,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-21 11:23:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:57,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-21 11:23:57,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:57,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-21 11:23:57,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:57,892 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 25 proven. 46 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-21 11:23:57,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:23:57,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105456981] [2024-09-21 11:23:57,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105456981] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:23:57,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041090089] [2024-09-21 11:23:57,892 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-21 11:23:57,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:23:57,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:23:57,894 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) [2024-09-21 11:23:57,897 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-21 11:23:57,931 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-21 11:23:57,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:23:57,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-21 11:23:57,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:23:58,012 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-21 11:23:58,013 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:23:58,153 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-21 11:23:58,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041090089] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:23:58,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:23:58,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 14 [2024-09-21 11:23:58,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309720261] [2024-09-21 11:23:58,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:23:58,154 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-21 11:23:58,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:23:58,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-21 11:23:58,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-09-21 11:23:58,154 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) [2024-09-21 11:23:58,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:23:58,247 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2024-09-21 11:23:58,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-21 11:23:58,248 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 [2024-09-21 11:23:58,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:23:58,248 INFO L225 Difference]: With dead ends: 69 [2024-09-21 11:23:58,248 INFO L226 Difference]: Without dead ends: 67 [2024-09-21 11:23:58,249 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 109 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-09-21 11:23:58,249 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:23:58,249 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 71 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:23:58,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-21 11:23:58,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2024-09-21 11:23:58,253 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) [2024-09-21 11:23:58,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2024-09-21 11:23:58,254 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 53 [2024-09-21 11:23:58,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:23:58,254 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2024-09-21 11:23:58,254 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) [2024-09-21 11:23:58,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:23:58,255 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2024-09-21 11:23:58,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-21 11:23:58,255 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:23:58,255 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:23:58,267 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-21 11:23:58,459 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 [2024-09-21 11:23:58,460 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:23:58,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:23:58,460 INFO L85 PathProgramCache]: Analyzing trace with hash 82933451, now seen corresponding path program 11 times [2024-09-21 11:23:58,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:23:58,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440473964] [2024-09-21 11:23:58,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:23:58,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:23:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:58,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:23:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:58,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-21 11:23:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:58,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-21 11:23:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:58,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-21 11:23:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:58,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-21 11:23:58,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:58,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-21 11:23:58,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:58,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-21 11:23:58,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:58,661 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-21 11:23:58,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:23:58,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440473964] [2024-09-21 11:23:58,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440473964] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:23:58,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102670414] [2024-09-21 11:23:58,661 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-21 11:23:58,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:23:58,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:23:58,663 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) [2024-09-21 11:23:58,664 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-21 11:23:58,702 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-09-21 11:23:58,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:23:58,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-21 11:23:58,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:23:58,762 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-21 11:23:58,762 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:23:58,946 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-21 11:23:58,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102670414] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:23:58,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:23:58,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 18 [2024-09-21 11:23:58,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647846051] [2024-09-21 11:23:58,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:23:58,947 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-21 11:23:58,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:23:58,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-21 11:23:58,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2024-09-21 11:23:58,948 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 8 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-21 11:23:59,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:23:59,038 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2024-09-21 11:23:59,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-21 11:23:59,038 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 8 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 60 [2024-09-21 11:23:59,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:23:59,039 INFO L225 Difference]: With dead ends: 93 [2024-09-21 11:23:59,039 INFO L226 Difference]: Without dead ends: 64 [2024-09-21 11:23:59,039 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 120 SyntacticMatches, 14 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2024-09-21 11:23:59,040 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:23:59,040 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:23:59,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-09-21 11:23:59,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-09-21 11:23:59,044 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) [2024-09-21 11:23:59,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2024-09-21 11:23:59,047 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 60 [2024-09-21 11:23:59,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:23:59,048 INFO L474 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2024-09-21 11:23:59,048 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 8 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-21 11:23:59,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:23:59,048 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2024-09-21 11:23:59,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-21 11:23:59,048 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:23:59,049 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:23:59,061 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-21 11:23:59,252 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 [2024-09-21 11:23:59,253 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:23:59,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:23:59,253 INFO L85 PathProgramCache]: Analyzing trace with hash 2019516247, now seen corresponding path program 12 times [2024-09-21 11:23:59,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:23:59,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830178460] [2024-09-21 11:23:59,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:23:59,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:23:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:59,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:23:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:59,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-21 11:23:59,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:59,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-21 11:23:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:59,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-21 11:23:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:59,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-21 11:23:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:59,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-21 11:23:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:59,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-21 11:23:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:23:59,478 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 33 proven. 64 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-21 11:23:59,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:23:59,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830178460] [2024-09-21 11:23:59,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830178460] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:23:59,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660807253] [2024-09-21 11:23:59,478 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-21 11:23:59,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:23:59,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:23:59,488 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) [2024-09-21 11:23:59,489 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-21 11:23:59,527 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-21 11:23:59,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:23:59,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-21 11:23:59,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:23:59,596 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-21 11:23:59,597 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:23:59,702 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-21 11:23:59,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660807253] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:23:59,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:23:59,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 15 [2024-09-21 11:23:59,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788860772] [2024-09-21 11:23:59,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:23:59,703 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-21 11:23:59,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:23:59,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-21 11:23:59,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-09-21 11:23:59,704 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) [2024-09-21 11:23:59,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:23:59,761 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2024-09-21 11:23:59,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-21 11:23:59,761 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 [2024-09-21 11:23:59,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:23:59,762 INFO L225 Difference]: With dead ends: 77 [2024-09-21 11:23:59,762 INFO L226 Difference]: Without dead ends: 75 [2024-09-21 11:23:59,762 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 [2024-09-21 11:23:59,763 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-21 11:23:59,763 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 76 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-21 11:23:59,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-09-21 11:23:59,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2024-09-21 11:23:59,767 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) [2024-09-21 11:23:59,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2024-09-21 11:23:59,767 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 61 [2024-09-21 11:23:59,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:23:59,767 INFO L474 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2024-09-21 11:23:59,767 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) [2024-09-21 11:23:59,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:23:59,767 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2024-09-21 11:23:59,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-21 11:23:59,768 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:23:59,768 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:23:59,783 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-09-21 11:23:59,968 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 [2024-09-21 11:23:59,968 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:23:59,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:23:59,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1248321171, now seen corresponding path program 13 times [2024-09-21 11:23:59,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:23:59,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370000251] [2024-09-21 11:23:59,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:23:59,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:23:59,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:00,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:00,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:00,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-21 11:24:00,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:00,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-21 11:24:00,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:00,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-21 11:24:00,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:00,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-21 11:24:00,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:00,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-21 11:24:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:00,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-21 11:24:00,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:00,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-21 11:24:00,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:00,138 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-21 11:24:00,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:00,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370000251] [2024-09-21 11:24:00,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370000251] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:00,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255786913] [2024-09-21 11:24:00,139 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-21 11:24:00,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:00,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:00,144 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) [2024-09-21 11:24:00,152 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-21 11:24:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:00,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-21 11:24:00,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:00,264 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-21 11:24:00,264 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:00,423 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-21 11:24:00,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255786913] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:00,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:00,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 20 [2024-09-21 11:24:00,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561885119] [2024-09-21 11:24:00,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:00,424 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-21 11:24:00,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:00,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-21 11:24:00,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-09-21 11:24:00,425 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 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) [2024-09-21 11:24:00,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:00,505 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2024-09-21 11:24:00,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-21 11:24:00,507 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 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 68 [2024-09-21 11:24:00,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:00,508 INFO L225 Difference]: With dead ends: 104 [2024-09-21 11:24:00,508 INFO L226 Difference]: Without dead ends: 72 [2024-09-21 11:24:00,508 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 136 SyntacticMatches, 16 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-09-21 11:24:00,508 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:00,508 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 154 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:24:00,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-09-21 11:24:00,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-09-21 11:24:00,515 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) [2024-09-21 11:24:00,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2024-09-21 11:24:00,515 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 68 [2024-09-21 11:24:00,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:00,516 INFO L474 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2024-09-21 11:24:00,516 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 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) [2024-09-21 11:24:00,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:00,516 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2024-09-21 11:24:00,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-09-21 11:24:00,519 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:00,519 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:00,533 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-09-21 11:24:00,720 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 [2024-09-21 11:24:00,720 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:00,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:00,721 INFO L85 PathProgramCache]: Analyzing trace with hash -2046116359, now seen corresponding path program 14 times [2024-09-21 11:24:00,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:00,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384085919] [2024-09-21 11:24:00,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:00,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:00,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:00,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-21 11:24:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:00,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-21 11:24:00,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:00,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-21 11:24:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:00,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-21 11:24:00,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:00,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-21 11:24:00,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:00,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-21 11:24:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:00,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-21 11:24:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:00,866 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 42 proven. 85 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-21 11:24:00,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:00,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384085919] [2024-09-21 11:24:00,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384085919] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:00,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30263822] [2024-09-21 11:24:00,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 11:24:00,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:00,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:00,869 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) [2024-09-21 11:24:00,872 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-21 11:24:00,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 11:24:00,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:24:00,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-21 11:24:00,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:00,965 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-21 11:24:00,965 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:01,100 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-21 11:24:01,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30263822] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:01,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:01,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 16 [2024-09-21 11:24:01,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055828016] [2024-09-21 11:24:01,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:01,102 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-21 11:24:01,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:01,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-21 11:24:01,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-09-21 11:24:01,103 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) [2024-09-21 11:24:01,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:01,164 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2024-09-21 11:24:01,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-21 11:24:01,165 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 [2024-09-21 11:24:01,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:01,166 INFO L225 Difference]: With dead ends: 85 [2024-09-21 11:24:01,166 INFO L226 Difference]: Without dead ends: 83 [2024-09-21 11:24:01,166 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 141 SyntacticMatches, 18 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2024-09-21 11:24:01,167 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:01,167 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 83 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:24:01,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-09-21 11:24:01,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2024-09-21 11:24:01,171 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) [2024-09-21 11:24:01,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2024-09-21 11:24:01,172 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 69 [2024-09-21 11:24:01,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:01,172 INFO L474 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2024-09-21 11:24:01,172 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) [2024-09-21 11:24:01,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:01,173 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2024-09-21 11:24:01,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-09-21 11:24:01,173 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:01,175 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:01,186 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-09-21 11:24:01,375 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 [2024-09-21 11:24:01,376 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:01,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:01,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1820682379, now seen corresponding path program 15 times [2024-09-21 11:24:01,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:01,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88152532] [2024-09-21 11:24:01,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:01,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:01,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:01,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:01,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-21 11:24:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:01,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-21 11:24:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:01,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-21 11:24:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:01,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-21 11:24:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:01,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-21 11:24:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:01,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-21 11:24:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:01,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-21 11:24:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:01,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-21 11:24:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:01,594 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-21 11:24:01,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:01,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88152532] [2024-09-21 11:24:01,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88152532] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:01,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987869734] [2024-09-21 11:24:01,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-21 11:24:01,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:01,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:01,596 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) [2024-09-21 11:24:01,597 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-21 11:24:01,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-09-21 11:24:01,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:24:01,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-21 11:24:01,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:01,677 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-21 11:24:01,678 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:01,841 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-21 11:24:01,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987869734] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:01,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:01,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 22 [2024-09-21 11:24:01,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091136374] [2024-09-21 11:24:01,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:01,842 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-21 11:24:01,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:01,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-21 11:24:01,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2024-09-21 11:24:01,843 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 10 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-21 11:24:01,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:01,938 INFO L93 Difference]: Finished difference Result 115 states and 125 transitions. [2024-09-21 11:24:01,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-21 11:24:01,939 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 10 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 76 [2024-09-21 11:24:01,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:01,939 INFO L225 Difference]: With dead ends: 115 [2024-09-21 11:24:01,940 INFO L226 Difference]: Without dead ends: 80 [2024-09-21 11:24:01,940 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 152 SyntacticMatches, 18 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2024-09-21 11:24:01,940 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:01,941 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 255 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:24:01,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-09-21 11:24:01,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-09-21 11:24:01,944 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) [2024-09-21 11:24:01,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2024-09-21 11:24:01,945 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 76 [2024-09-21 11:24:01,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:01,945 INFO L474 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2024-09-21 11:24:01,946 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 10 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-21 11:24:01,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:01,946 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2024-09-21 11:24:01,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-09-21 11:24:01,946 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:01,946 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:01,959 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-09-21 11:24:02,150 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 [2024-09-21 11:24:02,151 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:02,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:02,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1946728727, now seen corresponding path program 16 times [2024-09-21 11:24:02,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:02,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558286266] [2024-09-21 11:24:02,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:02,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:02,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:02,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:02,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-21 11:24:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:02,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-21 11:24:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:02,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-21 11:24:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:02,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-21 11:24:02,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:02,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-21 11:24:02,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:02,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-21 11:24:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:02,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-21 11:24:02,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:02,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-21 11:24:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:02,327 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 52 proven. 109 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-21 11:24:02,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:02,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558286266] [2024-09-21 11:24:02,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558286266] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:02,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902861407] [2024-09-21 11:24:02,327 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-21 11:24:02,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:02,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:02,329 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) [2024-09-21 11:24:02,332 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-21 11:24:02,373 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-21 11:24:02,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:24:02,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-21 11:24:02,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:02,432 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 61 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-21 11:24:02,432 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:02,582 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 61 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-21 11:24:02,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902861407] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:02,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:02,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 17 [2024-09-21 11:24:02,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039356467] [2024-09-21 11:24:02,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:02,584 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-21 11:24:02,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:02,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-21 11:24:02,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2024-09-21 11:24:02,585 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) [2024-09-21 11:24:02,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:02,658 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2024-09-21 11:24:02,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-21 11:24:02,658 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 [2024-09-21 11:24:02,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:02,659 INFO L225 Difference]: With dead ends: 93 [2024-09-21 11:24:02,659 INFO L226 Difference]: Without dead ends: 91 [2024-09-21 11:24:02,659 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 [2024-09-21 11:24:02,660 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:02,660 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 95 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:24:02,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-09-21 11:24:02,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2024-09-21 11:24:02,665 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) [2024-09-21 11:24:02,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2024-09-21 11:24:02,666 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 77 [2024-09-21 11:24:02,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:02,666 INFO L474 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2024-09-21 11:24:02,666 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) [2024-09-21 11:24:02,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:02,667 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2024-09-21 11:24:02,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-09-21 11:24:02,667 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:02,667 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:02,682 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-09-21 11:24:02,868 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 [2024-09-21 11:24:02,868 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:02,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:02,869 INFO L85 PathProgramCache]: Analyzing trace with hash 726290349, now seen corresponding path program 17 times [2024-09-21 11:24:02,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:02,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649302122] [2024-09-21 11:24:02,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:02,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:03,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:03,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-21 11:24:03,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:03,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-21 11:24:03,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:03,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-21 11:24:03,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:03,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-21 11:24:03,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:03,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-21 11:24:03,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:03,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-21 11:24:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:03,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-21 11:24:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:03,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-21 11:24:03,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:03,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-21 11:24:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:03,105 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-21 11:24:03,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:03,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649302122] [2024-09-21 11:24:03,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649302122] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:03,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688259563] [2024-09-21 11:24:03,106 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-21 11:24:03,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:03,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:03,107 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) [2024-09-21 11:24:03,116 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-21 11:24:03,159 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-09-21 11:24:03,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:24:03,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-21 11:24:03,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:03,240 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-21 11:24:03,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:03,446 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-21 11:24:03,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688259563] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:03,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:03,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 24 [2024-09-21 11:24:03,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963229956] [2024-09-21 11:24:03,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:03,447 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-21 11:24:03,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:03,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-21 11:24:03,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2024-09-21 11:24:03,448 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 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) [2024-09-21 11:24:03,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:03,531 INFO L93 Difference]: Finished difference Result 126 states and 137 transitions. [2024-09-21 11:24:03,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-21 11:24:03,532 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 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 84 [2024-09-21 11:24:03,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:03,532 INFO L225 Difference]: With dead ends: 126 [2024-09-21 11:24:03,532 INFO L226 Difference]: Without dead ends: 88 [2024-09-21 11:24:03,533 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 168 SyntacticMatches, 20 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2024-09-21 11:24:03,533 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:03,533 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 124 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:24:03,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-09-21 11:24:03,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-09-21 11:24:03,538 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) [2024-09-21 11:24:03,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2024-09-21 11:24:03,539 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 84 [2024-09-21 11:24:03,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:03,539 INFO L474 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2024-09-21 11:24:03,539 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 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) [2024-09-21 11:24:03,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:03,539 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2024-09-21 11:24:03,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-09-21 11:24:03,540 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:03,540 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:03,553 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-09-21 11:24:03,742 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 [2024-09-21 11:24:03,743 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:03,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:03,743 INFO L85 PathProgramCache]: Analyzing trace with hash 2011845689, now seen corresponding path program 18 times [2024-09-21 11:24:03,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:03,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803989850] [2024-09-21 11:24:03,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:03,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:03,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:03,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:03,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:03,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-21 11:24:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:03,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-21 11:24:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:03,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-21 11:24:03,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:03,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-21 11:24:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:03,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-21 11:24:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:03,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-21 11:24:03,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:03,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-21 11:24:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:03,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-21 11:24:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:03,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-21 11:24:03,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:03,935 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 63 proven. 136 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-21 11:24:03,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:03,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803989850] [2024-09-21 11:24:03,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803989850] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:03,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515561453] [2024-09-21 11:24:03,935 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-21 11:24:03,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:03,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:03,937 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) [2024-09-21 11:24:03,942 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-21 11:24:03,989 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-09-21 11:24:03,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:24:03,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-21 11:24:03,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:04,079 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 73 proven. 126 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-21 11:24:04,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:04,279 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 73 proven. 126 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-21 11:24:04,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515561453] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:04,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:04,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 18 [2024-09-21 11:24:04,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716074410] [2024-09-21 11:24:04,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:04,280 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-21 11:24:04,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:04,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-21 11:24:04,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2024-09-21 11:24:04,282 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) [2024-09-21 11:24:04,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:04,380 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2024-09-21 11:24:04,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-21 11:24:04,381 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 [2024-09-21 11:24:04,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:04,382 INFO L225 Difference]: With dead ends: 101 [2024-09-21 11:24:04,382 INFO L226 Difference]: Without dead ends: 99 [2024-09-21 11:24:04,382 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 [2024-09-21 11:24:04,382 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:04,383 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 75 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:24:04,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-09-21 11:24:04,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2024-09-21 11:24:04,389 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) [2024-09-21 11:24:04,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2024-09-21 11:24:04,390 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 85 [2024-09-21 11:24:04,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:04,391 INFO L474 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2024-09-21 11:24:04,391 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) [2024-09-21 11:24:04,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:04,391 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2024-09-21 11:24:04,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-09-21 11:24:04,392 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:04,392 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:04,404 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-09-21 11:24:04,596 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 [2024-09-21 11:24:04,597 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:04,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:04,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1515997771, now seen corresponding path program 19 times [2024-09-21 11:24:04,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:04,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488410197] [2024-09-21 11:24:04,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:04,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:04,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:04,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-21 11:24:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:04,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-21 11:24:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:04,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-21 11:24:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:04,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-21 11:24:04,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:04,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-21 11:24:04,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:04,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-21 11:24:04,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:04,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-21 11:24:04,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:04,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-21 11:24:04,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:04,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-21 11:24:04,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:04,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-21 11:24:04,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:04,837 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-21 11:24:04,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:04,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488410197] [2024-09-21 11:24:04,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488410197] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:04,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852097843] [2024-09-21 11:24:04,837 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-21 11:24:04,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:04,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:04,839 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) [2024-09-21 11:24:04,844 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-21 11:24:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:04,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-21 11:24:04,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:04,937 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-21 11:24:04,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:05,137 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-21 11:24:05,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852097843] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:05,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:05,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 26 [2024-09-21 11:24:05,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096651136] [2024-09-21 11:24:05,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:05,138 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-21 11:24:05,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:05,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-21 11:24:05,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2024-09-21 11:24:05,139 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 26 states have internal predecessors, (43), 12 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-21 11:24:05,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:05,250 INFO L93 Difference]: Finished difference Result 137 states and 149 transitions. [2024-09-21 11:24:05,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-21 11:24:05,251 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 26 states have internal predecessors, (43), 12 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 92 [2024-09-21 11:24:05,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:05,251 INFO L225 Difference]: With dead ends: 137 [2024-09-21 11:24:05,251 INFO L226 Difference]: Without dead ends: 96 [2024-09-21 11:24:05,252 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 184 SyntacticMatches, 22 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2024-09-21 11:24:05,252 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:05,252 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 209 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:24:05,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-09-21 11:24:05,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-09-21 11:24:05,258 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) [2024-09-21 11:24:05,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2024-09-21 11:24:05,258 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 92 [2024-09-21 11:24:05,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:05,258 INFO L474 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2024-09-21 11:24:05,258 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 26 states have internal predecessors, (43), 12 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-21 11:24:05,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:05,259 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2024-09-21 11:24:05,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-09-21 11:24:05,259 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:05,259 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:05,272 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-09-21 11:24:05,459 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 [2024-09-21 11:24:05,460 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:05,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:05,460 INFO L85 PathProgramCache]: Analyzing trace with hash 774177495, now seen corresponding path program 20 times [2024-09-21 11:24:05,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:05,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748414590] [2024-09-21 11:24:05,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:05,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:05,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:05,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:05,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-21 11:24:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:05,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-21 11:24:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:05,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-21 11:24:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:05,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-21 11:24:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:05,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-21 11:24:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:05,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-21 11:24:05,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:05,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-21 11:24:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:05,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-21 11:24:05,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:05,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-21 11:24:05,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:05,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-21 11:24:05,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:05,628 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 75 proven. 166 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-21 11:24:05,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:05,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748414590] [2024-09-21 11:24:05,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748414590] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:05,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110775687] [2024-09-21 11:24:05,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 11:24:05,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:05,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:05,631 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) [2024-09-21 11:24:05,631 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-21 11:24:05,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 11:24:05,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:24:05,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-21 11:24:05,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:05,739 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 86 proven. 155 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-21 11:24:05,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:05,922 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 86 proven. 155 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-21 11:24:05,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110775687] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:05,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:05,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 19 [2024-09-21 11:24:05,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394215871] [2024-09-21 11:24:05,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:05,923 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-21 11:24:05,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:05,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-21 11:24:05,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2024-09-21 11:24:05,923 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) [2024-09-21 11:24:05,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:05,987 INFO L93 Difference]: Finished difference Result 109 states and 111 transitions. [2024-09-21 11:24:05,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-21 11:24:05,988 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 [2024-09-21 11:24:05,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:05,988 INFO L225 Difference]: With dead ends: 109 [2024-09-21 11:24:05,989 INFO L226 Difference]: Without dead ends: 107 [2024-09-21 11:24:05,989 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 192 SyntacticMatches, 24 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2024-09-21 11:24:05,989 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:05,989 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 55 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:24:05,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-09-21 11:24:05,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103. [2024-09-21 11:24:05,994 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) [2024-09-21 11:24:05,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2024-09-21 11:24:05,994 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 93 [2024-09-21 11:24:05,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:05,995 INFO L474 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2024-09-21 11:24:05,995 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) [2024-09-21 11:24:05,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:05,995 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2024-09-21 11:24:05,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-09-21 11:24:05,996 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:05,996 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:06,008 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-09-21 11:24:06,199 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 [2024-09-21 11:24:06,200 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:06,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:06,200 INFO L85 PathProgramCache]: Analyzing trace with hash 945524205, now seen corresponding path program 21 times [2024-09-21 11:24:06,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:06,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496329351] [2024-09-21 11:24:06,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:06,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:06,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:06,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-21 11:24:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:06,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-21 11:24:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:06,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-21 11:24:06,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:06,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-21 11:24:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:06,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-21 11:24:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:06,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-21 11:24:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:06,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-21 11:24:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:06,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-21 11:24:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:06,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-21 11:24:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:06,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-21 11:24:06,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:06,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-21 11:24:06,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:06,528 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-21 11:24:06,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:06,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496329351] [2024-09-21 11:24:06,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496329351] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:06,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219538061] [2024-09-21 11:24:06,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-21 11:24:06,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:06,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:06,530 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) [2024-09-21 11:24:06,534 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-21 11:24:06,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-09-21 11:24:06,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:24:06,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-21 11:24:06,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:06,672 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-21 11:24:06,672 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:07,073 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-21 11:24:07,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219538061] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:07,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:07,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 28 [2024-09-21 11:24:07,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010039348] [2024-09-21 11:24:07,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:07,074 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-21 11:24:07,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:07,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-21 11:24:07,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2024-09-21 11:24:07,075 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 28 states have internal predecessors, (46), 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) [2024-09-21 11:24:07,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:07,256 INFO L93 Difference]: Finished difference Result 148 states and 161 transitions. [2024-09-21 11:24:07,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-21 11:24:07,256 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 28 states have internal predecessors, (46), 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 100 [2024-09-21 11:24:07,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:07,257 INFO L225 Difference]: With dead ends: 148 [2024-09-21 11:24:07,257 INFO L226 Difference]: Without dead ends: 104 [2024-09-21 11:24:07,257 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 200 SyntacticMatches, 24 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2024-09-21 11:24:07,258 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:07,258 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 232 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:24:07,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-09-21 11:24:07,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-09-21 11:24:07,264 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) [2024-09-21 11:24:07,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2024-09-21 11:24:07,265 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 100 [2024-09-21 11:24:07,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:07,265 INFO L474 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2024-09-21 11:24:07,265 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 28 states have internal predecessors, (46), 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) [2024-09-21 11:24:07,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:07,265 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2024-09-21 11:24:07,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-09-21 11:24:07,266 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:07,266 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:07,277 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-09-21 11:24:07,469 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 [2024-09-21 11:24:07,470 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:07,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:07,470 INFO L85 PathProgramCache]: Analyzing trace with hash 156826233, now seen corresponding path program 22 times [2024-09-21 11:24:07,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:07,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426494282] [2024-09-21 11:24:07,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:07,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:07,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:07,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-21 11:24:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:07,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-21 11:24:07,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:07,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-21 11:24:07,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:07,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-21 11:24:07,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:07,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-21 11:24:07,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:07,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-21 11:24:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:07,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-21 11:24:07,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:07,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-21 11:24:07,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:07,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-21 11:24:07,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:07,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-21 11:24:07,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:07,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-21 11:24:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:07,685 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 88 proven. 199 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-21 11:24:07,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:07,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426494282] [2024-09-21 11:24:07,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426494282] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:07,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790862813] [2024-09-21 11:24:07,685 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-21 11:24:07,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:07,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:07,687 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) [2024-09-21 11:24:07,691 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-21 11:24:07,735 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-21 11:24:07,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:24:07,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-21 11:24:07,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:07,800 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 100 proven. 187 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-21 11:24:07,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:07,988 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 100 proven. 187 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-21 11:24:07,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790862813] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:07,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:07,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 20 [2024-09-21 11:24:07,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220467438] [2024-09-21 11:24:07,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:07,989 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-21 11:24:07,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:07,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-21 11:24:07,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2024-09-21 11:24:07,990 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) [2024-09-21 11:24:08,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:08,071 INFO L93 Difference]: Finished difference Result 117 states and 119 transitions. [2024-09-21 11:24:08,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-21 11:24:08,071 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 [2024-09-21 11:24:08,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:08,072 INFO L225 Difference]: With dead ends: 117 [2024-09-21 11:24:08,072 INFO L226 Difference]: Without dead ends: 115 [2024-09-21 11:24:08,072 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 [2024-09-21 11:24:08,073 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:08,073 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 91 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:24:08,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-09-21 11:24:08,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2024-09-21 11:24:08,077 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) [2024-09-21 11:24:08,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2024-09-21 11:24:08,078 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 101 [2024-09-21 11:24:08,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:08,078 INFO L474 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2024-09-21 11:24:08,078 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) [2024-09-21 11:24:08,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:08,079 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2024-09-21 11:24:08,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-09-21 11:24:08,079 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:08,079 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:08,093 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-09-21 11:24:08,280 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 [2024-09-21 11:24:08,280 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:08,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:08,280 INFO L85 PathProgramCache]: Analyzing trace with hash -325968885, now seen corresponding path program 23 times [2024-09-21 11:24:08,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:08,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189298536] [2024-09-21 11:24:08,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:08,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:08,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:08,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-21 11:24:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:08,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-21 11:24:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:08,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-21 11:24:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:08,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-21 11:24:08,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:08,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-21 11:24:08,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:08,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-21 11:24:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:08,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-21 11:24:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:08,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-21 11:24:08,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:08,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-21 11:24:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:08,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-21 11:24:08,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:08,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-21 11:24:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:08,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-21 11:24:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:08,606 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-21 11:24:08,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:08,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189298536] [2024-09-21 11:24:08,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189298536] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:08,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796449618] [2024-09-21 11:24:08,607 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-21 11:24:08,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:08,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:08,608 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) [2024-09-21 11:24:08,609 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-09-21 11:24:08,660 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-09-21 11:24:08,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:24:08,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-21 11:24:08,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:08,715 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-21 11:24:08,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:08,980 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-21 11:24:08,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796449618] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:08,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:08,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 30 [2024-09-21 11:24:08,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639447327] [2024-09-21 11:24:08,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:08,981 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-21 11:24:08,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:08,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-21 11:24:08,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2024-09-21 11:24:08,983 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 14 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-21 11:24:09,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:09,084 INFO L93 Difference]: Finished difference Result 159 states and 173 transitions. [2024-09-21 11:24:09,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-21 11:24:09,084 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 14 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 108 [2024-09-21 11:24:09,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:09,085 INFO L225 Difference]: With dead ends: 159 [2024-09-21 11:24:09,085 INFO L226 Difference]: Without dead ends: 112 [2024-09-21 11:24:09,085 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 216 SyntacticMatches, 26 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2024-09-21 11:24:09,086 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:09,086 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 193 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:24:09,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-09-21 11:24:09,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-09-21 11:24:09,107 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) [2024-09-21 11:24:09,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2024-09-21 11:24:09,108 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 108 [2024-09-21 11:24:09,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:09,108 INFO L474 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2024-09-21 11:24:09,108 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 14 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-21 11:24:09,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:09,108 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2024-09-21 11:24:09,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-09-21 11:24:09,109 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:09,109 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:09,124 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-09-21 11:24:09,310 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 [2024-09-21 11:24:09,310 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:09,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:09,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1691368599, now seen corresponding path program 24 times [2024-09-21 11:24:09,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:09,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597937688] [2024-09-21 11:24:09,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:09,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:09,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:09,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-21 11:24:09,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:09,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-21 11:24:09,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:09,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-21 11:24:09,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:09,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-21 11:24:09,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:09,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-21 11:24:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:09,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-21 11:24:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:09,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-21 11:24:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:09,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-21 11:24:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:09,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-21 11:24:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:09,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-21 11:24:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:09,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-21 11:24:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:09,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-21 11:24:09,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:09,569 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 102 proven. 235 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-21 11:24:09,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:09,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597937688] [2024-09-21 11:24:09,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597937688] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:09,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405076593] [2024-09-21 11:24:09,570 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-21 11:24:09,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:09,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:09,571 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) [2024-09-21 11:24:09,576 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-09-21 11:24:09,640 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-21 11:24:09,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:24:09,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-21 11:24:09,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:09,796 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 115 proven. 222 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-21 11:24:09,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:09,992 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 115 proven. 222 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-21 11:24:09,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405076593] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:09,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:09,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 21 [2024-09-21 11:24:09,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547571259] [2024-09-21 11:24:09,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:09,994 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-21 11:24:09,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:09,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-21 11:24:09,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2024-09-21 11:24:09,997 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) [2024-09-21 11:24:10,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:10,094 INFO L93 Difference]: Finished difference Result 125 states and 127 transitions. [2024-09-21 11:24:10,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-21 11:24:10,095 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 [2024-09-21 11:24:10,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:10,099 INFO L225 Difference]: With dead ends: 125 [2024-09-21 11:24:10,099 INFO L226 Difference]: Without dead ends: 123 [2024-09-21 11:24:10,100 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 [2024-09-21 11:24:10,100 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:10,100 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 78 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:24:10,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-09-21 11:24:10,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2024-09-21 11:24:10,107 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) [2024-09-21 11:24:10,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2024-09-21 11:24:10,111 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 109 [2024-09-21 11:24:10,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:10,113 INFO L474 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2024-09-21 11:24:10,113 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) [2024-09-21 11:24:10,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:10,113 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2024-09-21 11:24:10,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-09-21 11:24:10,114 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:10,114 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:10,128 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-09-21 11:24:10,317 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 [2024-09-21 11:24:10,318 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:10,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:10,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1194318893, now seen corresponding path program 25 times [2024-09-21 11:24:10,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:10,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017069732] [2024-09-21 11:24:10,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:10,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:10,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:10,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-21 11:24:10,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:10,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-21 11:24:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:10,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-21 11:24:10,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:10,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-21 11:24:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:10,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-21 11:24:10,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:10,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-21 11:24:10,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:10,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-21 11:24:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:10,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-21 11:24:10,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:10,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-21 11:24:10,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:10,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-21 11:24:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:10,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-21 11:24:10,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:10,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-21 11:24:10,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:10,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-21 11:24:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:10,699 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-21 11:24:10,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:10,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017069732] [2024-09-21 11:24:10,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017069732] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:10,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062427726] [2024-09-21 11:24:10,699 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-21 11:24:10,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:10,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:10,701 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) [2024-09-21 11:24:10,708 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-09-21 11:24:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:10,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-21 11:24:10,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:10,826 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-21 11:24:10,826 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:11,145 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-21 11:24:11,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062427726] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:11,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:11,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 32 [2024-09-21 11:24:11,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077161942] [2024-09-21 11:24:11,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:11,148 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-21 11:24:11,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:11,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-21 11:24:11,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2024-09-21 11:24:11,152 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand has 32 states, 32 states have (on average 1.625) internal successors, (52), 32 states have internal predecessors, (52), 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) [2024-09-21 11:24:11,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:11,328 INFO L93 Difference]: Finished difference Result 170 states and 185 transitions. [2024-09-21 11:24:11,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-21 11:24:11,329 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.625) internal successors, (52), 32 states have internal predecessors, (52), 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 116 [2024-09-21 11:24:11,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:11,330 INFO L225 Difference]: With dead ends: 170 [2024-09-21 11:24:11,330 INFO L226 Difference]: Without dead ends: 120 [2024-09-21 11:24:11,330 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 232 SyntacticMatches, 28 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2024-09-21 11:24:11,331 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:11,331 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 238 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:24:11,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-09-21 11:24:11,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2024-09-21 11:24:11,339 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) [2024-09-21 11:24:11,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2024-09-21 11:24:11,340 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 116 [2024-09-21 11:24:11,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:11,340 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 121 transitions. [2024-09-21 11:24:11,340 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.625) internal successors, (52), 32 states have internal predecessors, (52), 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) [2024-09-21 11:24:11,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:11,340 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 121 transitions. [2024-09-21 11:24:11,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-09-21 11:24:11,341 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:11,341 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:11,357 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-09-21 11:24:11,545 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 [2024-09-21 11:24:11,546 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:11,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:11,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1153085625, now seen corresponding path program 26 times [2024-09-21 11:24:11,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:11,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107685100] [2024-09-21 11:24:11,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:11,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:11,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:11,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-21 11:24:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:11,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-21 11:24:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:11,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-21 11:24:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:11,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-21 11:24:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:11,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-21 11:24:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:11,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-21 11:24:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:11,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-21 11:24:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:11,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-21 11:24:11,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:11,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-21 11:24:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:11,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-21 11:24:11,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:11,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-21 11:24:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:11,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-21 11:24:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:11,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-21 11:24:11,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:11,898 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 117 proven. 274 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-21 11:24:11,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:11,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107685100] [2024-09-21 11:24:11,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107685100] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:11,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126305102] [2024-09-21 11:24:11,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 11:24:11,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:11,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:11,903 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) [2024-09-21 11:24:11,906 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-09-21 11:24:11,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 11:24:11,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:24:11,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-21 11:24:11,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:12,063 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 131 proven. 260 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-21 11:24:12,064 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:12,301 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 131 proven. 260 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-21 11:24:12,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126305102] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:12,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:12,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 22 [2024-09-21 11:24:12,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783694669] [2024-09-21 11:24:12,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:12,302 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-21 11:24:12,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:12,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-21 11:24:12,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2024-09-21 11:24:12,302 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) [2024-09-21 11:24:12,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:12,405 INFO L93 Difference]: Finished difference Result 133 states and 135 transitions. [2024-09-21 11:24:12,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-21 11:24:12,406 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 [2024-09-21 11:24:12,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:12,407 INFO L225 Difference]: With dead ends: 133 [2024-09-21 11:24:12,407 INFO L226 Difference]: Without dead ends: 131 [2024-09-21 11:24:12,407 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 243 SyntacticMatches, 30 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2024-09-21 11:24:12,408 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:12,408 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 79 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:24:12,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-09-21 11:24:12,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2024-09-21 11:24:12,413 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) [2024-09-21 11:24:12,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2024-09-21 11:24:12,414 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 117 [2024-09-21 11:24:12,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:12,414 INFO L474 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2024-09-21 11:24:12,414 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) [2024-09-21 11:24:12,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:12,414 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2024-09-21 11:24:12,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-09-21 11:24:12,415 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:12,415 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:12,428 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-09-21 11:24:12,619 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 [2024-09-21 11:24:12,619 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:12,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:12,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1614994891, now seen corresponding path program 27 times [2024-09-21 11:24:12,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:12,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360930822] [2024-09-21 11:24:12,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:12,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:13,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:13,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-21 11:24:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:13,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-21 11:24:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:13,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-21 11:24:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:13,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-21 11:24:13,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:13,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-21 11:24:13,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:13,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-21 11:24:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:13,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-21 11:24:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:13,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-21 11:24:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:13,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-21 11:24:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:13,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-21 11:24:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:13,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-21 11:24:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:13,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-21 11:24:13,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:13,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-21 11:24:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:13,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-21 11:24:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:13,061 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-21 11:24:13,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:13,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360930822] [2024-09-21 11:24:13,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360930822] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:13,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151189983] [2024-09-21 11:24:13,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-21 11:24:13,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:13,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:13,063 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) [2024-09-21 11:24:13,064 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-09-21 11:24:13,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-09-21 11:24:13,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:24:13,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-21 11:24:13,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:13,185 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-21 11:24:13,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:13,516 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-21 11:24:13,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151189983] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:13,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:13,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 34 [2024-09-21 11:24:13,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970300327] [2024-09-21 11:24:13,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:13,517 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-21 11:24:13,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:13,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-21 11:24:13,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=832, Unknown=0, NotChecked=0, Total=1122 [2024-09-21 11:24:13,518 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand has 34 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 34 states have internal predecessors, (55), 16 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-21 11:24:13,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:13,651 INFO L93 Difference]: Finished difference Result 181 states and 197 transitions. [2024-09-21 11:24:13,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-21 11:24:13,651 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 34 states have internal predecessors, (55), 16 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 124 [2024-09-21 11:24:13,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:13,652 INFO L225 Difference]: With dead ends: 181 [2024-09-21 11:24:13,652 INFO L226 Difference]: Without dead ends: 128 [2024-09-21 11:24:13,652 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 248 SyntacticMatches, 30 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=290, Invalid=832, Unknown=0, NotChecked=0, Total=1122 [2024-09-21 11:24:13,653 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 228 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 [2024-09-21 11:24:13,653 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 228 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:24:13,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-09-21 11:24:13,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-09-21 11:24:13,663 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) [2024-09-21 11:24:13,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2024-09-21 11:24:13,664 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 124 [2024-09-21 11:24:13,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:13,664 INFO L474 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2024-09-21 11:24:13,664 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 34 states have internal predecessors, (55), 16 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-21 11:24:13,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:13,664 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2024-09-21 11:24:13,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-09-21 11:24:13,665 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:13,665 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:13,677 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-09-21 11:24:13,865 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 [2024-09-21 11:24:13,865 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:13,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:13,865 INFO L85 PathProgramCache]: Analyzing trace with hash -182032809, now seen corresponding path program 28 times [2024-09-21 11:24:13,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:13,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424150289] [2024-09-21 11:24:13,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:13,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:14,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:14,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-21 11:24:14,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:14,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-21 11:24:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:14,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-21 11:24:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:14,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-21 11:24:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:14,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-21 11:24:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:14,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-21 11:24:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:14,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-21 11:24:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:14,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-21 11:24:14,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:14,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-21 11:24:14,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:14,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-21 11:24:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:14,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-21 11:24:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:14,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-21 11:24:14,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:14,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-21 11:24:14,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:14,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-21 11:24:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:14,125 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 133 proven. 316 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-21 11:24:14,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:14,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424150289] [2024-09-21 11:24:14,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424150289] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:14,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282170233] [2024-09-21 11:24:14,126 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-21 11:24:14,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:14,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:14,127 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) [2024-09-21 11:24:14,128 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-09-21 11:24:14,182 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-21 11:24:14,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:24:14,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-21 11:24:14,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:14,270 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 148 proven. 301 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-21 11:24:14,270 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:14,565 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 148 proven. 301 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-21 11:24:14,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282170233] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:14,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:14,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 23 [2024-09-21 11:24:14,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739120947] [2024-09-21 11:24:14,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:14,566 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-21 11:24:14,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:14,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-21 11:24:14,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2024-09-21 11:24:14,567 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) [2024-09-21 11:24:14,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:14,653 INFO L93 Difference]: Finished difference Result 141 states and 143 transitions. [2024-09-21 11:24:14,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-21 11:24:14,654 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 [2024-09-21 11:24:14,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:14,655 INFO L225 Difference]: With dead ends: 141 [2024-09-21 11:24:14,655 INFO L226 Difference]: Without dead ends: 139 [2024-09-21 11:24:14,655 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 [2024-09-21 11:24:14,655 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:14,655 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 87 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:24:14,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-09-21 11:24:14,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2024-09-21 11:24:14,661 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) [2024-09-21 11:24:14,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2024-09-21 11:24:14,662 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 125 [2024-09-21 11:24:14,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:14,662 INFO L474 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2024-09-21 11:24:14,662 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) [2024-09-21 11:24:14,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:14,663 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2024-09-21 11:24:14,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-09-21 11:24:14,663 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:14,664 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:14,675 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-09-21 11:24:14,867 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 [2024-09-21 11:24:14,868 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:14,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:14,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1020577171, now seen corresponding path program 29 times [2024-09-21 11:24:14,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:14,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828732809] [2024-09-21 11:24:14,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:14,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:14,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:15,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:15,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-21 11:24:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:15,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-21 11:24:15,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:15,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-21 11:24:15,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:15,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-21 11:24:15,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:15,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-21 11:24:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:15,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-21 11:24:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:15,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-21 11:24:15,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:15,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-21 11:24:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:15,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-21 11:24:15,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:15,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-21 11:24:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:15,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-21 11:24:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:15,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-21 11:24:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:15,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-21 11:24:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:15,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-21 11:24:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:15,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-21 11:24:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:15,355 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-21 11:24:15,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:15,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828732809] [2024-09-21 11:24:15,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828732809] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:15,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044257253] [2024-09-21 11:24:15,355 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-21 11:24:15,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:15,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:15,357 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) [2024-09-21 11:24:15,358 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-09-21 11:24:15,418 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-09-21 11:24:15,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:24:15,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-21 11:24:15,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:15,485 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-21 11:24:15,485 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:15,855 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-21 11:24:15,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044257253] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:15,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:15,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 36 [2024-09-21 11:24:15,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839952685] [2024-09-21 11:24:15,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:15,856 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-21 11:24:15,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:15,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-21 11:24:15,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=935, Unknown=0, NotChecked=0, Total=1260 [2024-09-21 11:24:15,857 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 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) [2024-09-21 11:24:15,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:15,983 INFO L93 Difference]: Finished difference Result 192 states and 209 transitions. [2024-09-21 11:24:15,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-21 11:24:15,983 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 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 132 [2024-09-21 11:24:15,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:15,987 INFO L225 Difference]: With dead ends: 192 [2024-09-21 11:24:15,987 INFO L226 Difference]: Without dead ends: 136 [2024-09-21 11:24:15,988 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 264 SyntacticMatches, 32 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=325, Invalid=935, Unknown=0, NotChecked=0, Total=1260 [2024-09-21 11:24:15,988 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:15,988 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 240 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:24:15,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-09-21 11:24:15,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-09-21 11:24:15,997 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) [2024-09-21 11:24:15,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2024-09-21 11:24:15,998 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 132 [2024-09-21 11:24:15,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:15,998 INFO L474 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2024-09-21 11:24:15,998 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 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) [2024-09-21 11:24:15,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:15,999 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2024-09-21 11:24:16,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-09-21 11:24:16,000 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:16,001 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:16,026 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-09-21 11:24:16,201 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 [2024-09-21 11:24:16,201 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:16,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:16,201 INFO L85 PathProgramCache]: Analyzing trace with hash 896759545, now seen corresponding path program 30 times [2024-09-21 11:24:16,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:16,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164296262] [2024-09-21 11:24:16,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:16,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:16,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:16,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-21 11:24:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:16,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-21 11:24:16,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:16,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-21 11:24:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:16,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-21 11:24:16,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:16,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-21 11:24:16,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:16,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-21 11:24:16,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:16,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-21 11:24:16,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:16,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-21 11:24:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:16,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-21 11:24:16,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:16,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-21 11:24:16,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:16,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-21 11:24:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:16,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-21 11:24:16,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:16,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-21 11:24:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:16,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-21 11:24:16,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:16,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-21 11:24:16,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:16,515 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 150 proven. 361 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-21 11:24:16,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:16,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164296262] [2024-09-21 11:24:16,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164296262] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:16,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796510088] [2024-09-21 11:24:16,515 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-21 11:24:16,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:16,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:16,517 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) [2024-09-21 11:24:16,518 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-09-21 11:24:16,577 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2024-09-21 11:24:16,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:24:16,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-21 11:24:16,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:16,659 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 166 proven. 345 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-21 11:24:16,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:16,946 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 166 proven. 345 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-21 11:24:16,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796510088] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:16,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:16,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 24 [2024-09-21 11:24:16,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462176341] [2024-09-21 11:24:16,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:16,947 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-21 11:24:16,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:16,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-21 11:24:16,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=368, Unknown=0, NotChecked=0, Total=552 [2024-09-21 11:24:16,948 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) [2024-09-21 11:24:17,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:17,047 INFO L93 Difference]: Finished difference Result 149 states and 151 transitions. [2024-09-21 11:24:17,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-21 11:24:17,048 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 [2024-09-21 11:24:17,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:17,049 INFO L225 Difference]: With dead ends: 149 [2024-09-21 11:24:17,049 INFO L226 Difference]: Without dead ends: 147 [2024-09-21 11:24:17,049 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 [2024-09-21 11:24:17,049 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:17,049 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 92 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:24:17,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-09-21 11:24:17,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 143. [2024-09-21 11:24:17,055 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) [2024-09-21 11:24:17,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2024-09-21 11:24:17,056 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 133 [2024-09-21 11:24:17,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:17,056 INFO L474 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2024-09-21 11:24:17,056 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) [2024-09-21 11:24:17,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:17,057 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2024-09-21 11:24:17,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-09-21 11:24:17,057 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:17,057 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:17,076 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-09-21 11:24:17,261 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 [2024-09-21 11:24:17,262 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:17,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:17,262 INFO L85 PathProgramCache]: Analyzing trace with hash -779448437, now seen corresponding path program 31 times [2024-09-21 11:24:17,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:17,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119723898] [2024-09-21 11:24:17,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:17,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:17,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:17,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:17,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:17,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-21 11:24:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:17,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-21 11:24:17,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:17,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-21 11:24:17,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:17,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-21 11:24:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:17,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-21 11:24:17,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:17,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-21 11:24:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:17,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-21 11:24:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:17,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-21 11:24:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:17,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-21 11:24:17,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:17,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-21 11:24:17,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:17,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-21 11:24:17,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:17,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-21 11:24:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:17,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-21 11:24:17,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:17,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-21 11:24:17,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:17,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-21 11:24:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:17,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-21 11:24:17,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:17,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-21 11:24:17,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:17,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119723898] [2024-09-21 11:24:17,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119723898] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:17,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267533058] [2024-09-21 11:24:17,754 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-21 11:24:17,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:17,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:17,759 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) [2024-09-21 11:24:17,760 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-09-21 11:24:17,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:17,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-21 11:24:17,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:17,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-21 11:24:17,907 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:18,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-21 11:24:18,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267533058] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:18,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:18,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 38 [2024-09-21 11:24:18,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645679628] [2024-09-21 11:24:18,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:18,312 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-21 11:24:18,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:18,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-21 11:24:18,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=1044, Unknown=0, NotChecked=0, Total=1406 [2024-09-21 11:24:18,313 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand has 38 states, 38 states have (on average 1.605263157894737) internal successors, (61), 38 states have internal predecessors, (61), 18 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-21 11:24:18,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:18,539 INFO L93 Difference]: Finished difference Result 203 states and 221 transitions. [2024-09-21 11:24:18,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-21 11:24:18,539 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.605263157894737) internal successors, (61), 38 states have internal predecessors, (61), 18 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 140 [2024-09-21 11:24:18,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:18,540 INFO L225 Difference]: With dead ends: 203 [2024-09-21 11:24:18,540 INFO L226 Difference]: Without dead ends: 144 [2024-09-21 11:24:18,541 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 280 SyntacticMatches, 34 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=362, Invalid=1044, Unknown=0, NotChecked=0, Total=1406 [2024-09-21 11:24:18,541 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:18,541 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 552 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:24:18,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-09-21 11:24:18,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-09-21 11:24:18,548 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) [2024-09-21 11:24:18,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2024-09-21 11:24:18,548 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 140 [2024-09-21 11:24:18,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:18,548 INFO L474 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2024-09-21 11:24:18,549 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.605263157894737) internal successors, (61), 38 states have internal predecessors, (61), 18 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-21 11:24:18,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:18,549 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2024-09-21 11:24:18,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-09-21 11:24:18,549 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:18,549 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:18,562 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-09-21 11:24:18,753 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 [2024-09-21 11:24:18,754 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:18,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:18,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1690075113, now seen corresponding path program 32 times [2024-09-21 11:24:18,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:18,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743948596] [2024-09-21 11:24:18,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:18,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:19,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:19,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-21 11:24:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:19,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-21 11:24:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:19,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-21 11:24:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:19,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-21 11:24:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:19,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-21 11:24:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:19,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-21 11:24:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:19,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-21 11:24:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:19,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-21 11:24:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:19,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-21 11:24:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:19,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-21 11:24:19,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:19,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-21 11:24:19,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:19,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-21 11:24:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:19,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-21 11:24:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:19,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-21 11:24:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:19,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-21 11:24:19,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:19,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-21 11:24:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:19,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 168 proven. 409 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-21 11:24:19,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:19,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743948596] [2024-09-21 11:24:19,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743948596] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:19,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002237735] [2024-09-21 11:24:19,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 11:24:19,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:19,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:19,107 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) [2024-09-21 11:24:19,107 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-09-21 11:24:19,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 11:24:19,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:24:19,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-21 11:24:19,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:19,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 185 proven. 392 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-21 11:24:19,252 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:19,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 185 proven. 392 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-21 11:24:19,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002237735] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:19,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:19,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 25 [2024-09-21 11:24:19,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194478063] [2024-09-21 11:24:19,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:19,601 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-21 11:24:19,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:19,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-21 11:24:19,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=397, Unknown=0, NotChecked=0, Total=600 [2024-09-21 11:24:19,601 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) [2024-09-21 11:24:19,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:19,708 INFO L93 Difference]: Finished difference Result 157 states and 159 transitions. [2024-09-21 11:24:19,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-21 11:24:19,708 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 [2024-09-21 11:24:19,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:19,709 INFO L225 Difference]: With dead ends: 157 [2024-09-21 11:24:19,709 INFO L226 Difference]: Without dead ends: 155 [2024-09-21 11:24:19,709 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 [2024-09-21 11:24:19,710 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:19,710 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 103 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:24:19,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-09-21 11:24:19,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2024-09-21 11:24:19,716 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) [2024-09-21 11:24:19,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2024-09-21 11:24:19,717 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 141 [2024-09-21 11:24:19,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:19,717 INFO L474 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2024-09-21 11:24:19,718 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) [2024-09-21 11:24:19,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:19,718 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2024-09-21 11:24:19,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-09-21 11:24:19,718 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:19,718 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:19,730 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-09-21 11:24:19,919 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 [2024-09-21 11:24:19,919 INFO L399 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:19,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:19,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1488038061, now seen corresponding path program 33 times [2024-09-21 11:24:19,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:19,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548911897] [2024-09-21 11:24:19,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:19,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:20,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:20,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:20,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-21 11:24:20,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:20,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-21 11:24:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:20,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-21 11:24:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:20,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-21 11:24:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:20,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-21 11:24:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:20,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-21 11:24:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:20,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-21 11:24:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:20,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-21 11:24:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:20,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-21 11:24:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:20,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-21 11:24:20,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:20,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-21 11:24:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:20,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-21 11:24:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:20,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-21 11:24:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:20,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-21 11:24:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:20,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-21 11:24:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:20,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-21 11:24:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:20,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-21 11:24:20,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:20,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-21 11:24:20,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:20,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548911897] [2024-09-21 11:24:20,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548911897] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:20,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006387022] [2024-09-21 11:24:20,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-21 11:24:20,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:20,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:20,465 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) [2024-09-21 11:24:20,466 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-09-21 11:24:20,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-09-21 11:24:20,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:24:20,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-21 11:24:20,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:20,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-21 11:24:20,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:21,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-21 11:24:21,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006387022] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:21,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:21,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 40 [2024-09-21 11:24:21,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142885947] [2024-09-21 11:24:21,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:21,043 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-21 11:24:21,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:21,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-21 11:24:21,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=1159, Unknown=0, NotChecked=0, Total=1560 [2024-09-21 11:24:21,044 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand has 40 states, 40 states have (on average 1.6) internal successors, (64), 40 states have internal predecessors, (64), 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) [2024-09-21 11:24:21,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:21,223 INFO L93 Difference]: Finished difference Result 214 states and 233 transitions. [2024-09-21 11:24:21,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-21 11:24:21,223 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.6) internal successors, (64), 40 states have internal predecessors, (64), 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 148 [2024-09-21 11:24:21,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:21,224 INFO L225 Difference]: With dead ends: 214 [2024-09-21 11:24:21,224 INFO L226 Difference]: Without dead ends: 152 [2024-09-21 11:24:21,225 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 296 SyntacticMatches, 36 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=401, Invalid=1159, Unknown=0, NotChecked=0, Total=1560 [2024-09-21 11:24:21,225 INFO L434 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:21,225 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 306 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:24:21,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-09-21 11:24:21,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2024-09-21 11:24:21,232 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) [2024-09-21 11:24:21,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 153 transitions. [2024-09-21 11:24:21,233 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 153 transitions. Word has length 148 [2024-09-21 11:24:21,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:21,233 INFO L474 AbstractCegarLoop]: Abstraction has 152 states and 153 transitions. [2024-09-21 11:24:21,233 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.6) internal successors, (64), 40 states have internal predecessors, (64), 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) [2024-09-21 11:24:21,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:21,233 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 153 transitions. [2024-09-21 11:24:21,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-09-21 11:24:21,234 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:21,234 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:21,252 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-09-21 11:24:21,434 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 [2024-09-21 11:24:21,434 INFO L399 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:21,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:21,435 INFO L85 PathProgramCache]: Analyzing trace with hash 669470009, now seen corresponding path program 34 times [2024-09-21 11:24:21,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:21,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615699350] [2024-09-21 11:24:21,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:21,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:21,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:21,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-21 11:24:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:21,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-21 11:24:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:21,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-21 11:24:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:21,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-21 11:24:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:21,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-21 11:24:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:21,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-21 11:24:21,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:21,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-21 11:24:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:21,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-21 11:24:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:21,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-21 11:24:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:21,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-21 11:24:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:21,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-21 11:24:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:21,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-21 11:24:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:21,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-21 11:24:21,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:21,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-21 11:24:21,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:21,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-21 11:24:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:21,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-21 11:24:21,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:21,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-21 11:24:21,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:21,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 187 proven. 460 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-21 11:24:21,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:21,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615699350] [2024-09-21 11:24:21,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615699350] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:21,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722234051] [2024-09-21 11:24:21,938 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-21 11:24:21,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:21,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:21,941 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) [2024-09-21 11:24:21,942 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-09-21 11:24:22,000 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-21 11:24:22,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:24:22,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-21 11:24:22,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:22,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 205 proven. 442 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-21 11:24:22,098 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:22,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 205 proven. 442 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-21 11:24:22,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722234051] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:22,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:22,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 26 [2024-09-21 11:24:22,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188788310] [2024-09-21 11:24:22,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:22,448 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-21 11:24:22,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:22,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-21 11:24:22,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=427, Unknown=0, NotChecked=0, Total=650 [2024-09-21 11:24:22,449 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) [2024-09-21 11:24:22,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:22,553 INFO L93 Difference]: Finished difference Result 165 states and 167 transitions. [2024-09-21 11:24:22,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-21 11:24:22,554 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 [2024-09-21 11:24:22,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:22,555 INFO L225 Difference]: With dead ends: 165 [2024-09-21 11:24:22,555 INFO L226 Difference]: Without dead ends: 163 [2024-09-21 11:24:22,555 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 313 SyntacticMatches, 36 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=229, Invalid=473, Unknown=0, NotChecked=0, Total=702 [2024-09-21 11:24:22,555 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:22,555 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 100 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:24:22,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-09-21 11:24:22,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2024-09-21 11:24:22,562 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) [2024-09-21 11:24:22,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2024-09-21 11:24:22,563 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 149 [2024-09-21 11:24:22,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:22,564 INFO L474 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2024-09-21 11:24:22,564 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) [2024-09-21 11:24:22,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:22,564 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2024-09-21 11:24:22,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-09-21 11:24:22,564 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:22,564 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:22,577 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-09-21 11:24:22,768 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 [2024-09-21 11:24:22,769 INFO L399 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:22,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:22,769 INFO L85 PathProgramCache]: Analyzing trace with hash -75157173, now seen corresponding path program 35 times [2024-09-21 11:24:22,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:22,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946551064] [2024-09-21 11:24:22,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:22,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:23,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:23,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-21 11:24:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:23,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-21 11:24:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:23,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-21 11:24:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:23,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-21 11:24:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:23,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-21 11:24:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:23,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-21 11:24:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:23,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-21 11:24:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:23,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-21 11:24:23,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:23,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-21 11:24:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:23,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-21 11:24:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:23,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-21 11:24:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:23,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-21 11:24:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:23,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-21 11:24:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:23,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-21 11:24:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:23,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-21 11:24:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:23,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-21 11:24:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:23,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-21 11:24:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:23,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-21 11:24:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:23,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-21 11:24:23,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:23,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946551064] [2024-09-21 11:24:23,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946551064] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:23,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219518490] [2024-09-21 11:24:23,359 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-21 11:24:23,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:23,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:23,361 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) [2024-09-21 11:24:23,362 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-09-21 11:24:23,428 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2024-09-21 11:24:23,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:24:23,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-21 11:24:23,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:23,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-21 11:24:23,504 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:23,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-21 11:24:23,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219518490] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:23,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:23,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 42 [2024-09-21 11:24:23,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852897860] [2024-09-21 11:24:23,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:23,995 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-21 11:24:23,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:23,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-21 11:24:23,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=442, Invalid=1280, Unknown=0, NotChecked=0, Total=1722 [2024-09-21 11:24:23,996 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand has 42 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 42 states have internal predecessors, (67), 20 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-21 11:24:24,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:24,181 INFO L93 Difference]: Finished difference Result 225 states and 245 transitions. [2024-09-21 11:24:24,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-21 11:24:24,182 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 42 states have internal predecessors, (67), 20 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 156 [2024-09-21 11:24:24,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:24,183 INFO L225 Difference]: With dead ends: 225 [2024-09-21 11:24:24,183 INFO L226 Difference]: Without dead ends: 160 [2024-09-21 11:24:24,183 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 312 SyntacticMatches, 38 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1203 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=442, Invalid=1280, Unknown=0, NotChecked=0, Total=1722 [2024-09-21 11:24:24,184 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:24,184 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 418 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:24:24,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-09-21 11:24:24,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2024-09-21 11:24:24,191 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) [2024-09-21 11:24:24,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 161 transitions. [2024-09-21 11:24:24,192 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 161 transitions. Word has length 156 [2024-09-21 11:24:24,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:24,192 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 161 transitions. [2024-09-21 11:24:24,192 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 42 states have internal predecessors, (67), 20 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-21 11:24:24,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:24,193 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 161 transitions. [2024-09-21 11:24:24,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-09-21 11:24:24,193 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:24,193 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:24,217 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-09-21 11:24:24,393 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 [2024-09-21 11:24:24,394 INFO L399 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:24,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:24,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1304196649, now seen corresponding path program 36 times [2024-09-21 11:24:24,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:24,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555180330] [2024-09-21 11:24:24,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:24,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:24,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:24,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-21 11:24:24,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:24,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-21 11:24:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:24,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-21 11:24:24,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:24,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-21 11:24:24,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:24,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-21 11:24:24,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:24,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-21 11:24:24,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:24,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-21 11:24:24,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:24,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-21 11:24:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:24,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-21 11:24:24,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:24,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-21 11:24:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:24,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-21 11:24:24,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:24,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-21 11:24:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:24,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-21 11:24:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:24,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-21 11:24:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:24,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-21 11:24:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:24,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-21 11:24:24,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:24,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-21 11:24:24,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:24,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-21 11:24:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:24,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 207 proven. 514 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-21 11:24:24,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:24,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555180330] [2024-09-21 11:24:24,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555180330] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:24,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100135770] [2024-09-21 11:24:24,807 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-21 11:24:24,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:24,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:24,809 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) [2024-09-21 11:24:24,810 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-09-21 11:24:24,894 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-09-21 11:24:24,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:24:24,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-21 11:24:24,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:25,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 226 proven. 495 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-21 11:24:25,021 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:25,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 226 proven. 495 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-21 11:24:25,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100135770] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:25,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:25,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 27 [2024-09-21 11:24:25,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774664353] [2024-09-21 11:24:25,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:25,479 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-21 11:24:25,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:25,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-21 11:24:25,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=458, Unknown=0, NotChecked=0, Total=702 [2024-09-21 11:24:25,480 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) [2024-09-21 11:24:25,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:25,574 INFO L93 Difference]: Finished difference Result 173 states and 175 transitions. [2024-09-21 11:24:25,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-21 11:24:25,575 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 [2024-09-21 11:24:25,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:25,579 INFO L225 Difference]: With dead ends: 173 [2024-09-21 11:24:25,579 INFO L226 Difference]: Without dead ends: 171 [2024-09-21 11:24:25,580 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 330 SyntacticMatches, 38 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=250, Invalid=506, Unknown=0, NotChecked=0, Total=756 [2024-09-21 11:24:25,580 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:25,580 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 102 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:24:25,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-09-21 11:24:25,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2024-09-21 11:24:25,603 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) [2024-09-21 11:24:25,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2024-09-21 11:24:25,604 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 157 [2024-09-21 11:24:25,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:25,604 INFO L474 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2024-09-21 11:24:25,605 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) [2024-09-21 11:24:25,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:25,605 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2024-09-21 11:24:25,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-09-21 11:24:25,605 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:25,605 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:25,618 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-09-21 11:24:25,806 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 [2024-09-21 11:24:25,806 INFO L399 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:25,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:25,806 INFO L85 PathProgramCache]: Analyzing trace with hash 891758317, now seen corresponding path program 37 times [2024-09-21 11:24:25,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:25,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392873089] [2024-09-21 11:24:25,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:25,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:25,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:26,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:26,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-21 11:24:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:26,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-21 11:24:26,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:26,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-21 11:24:26,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:26,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-21 11:24:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:26,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-21 11:24:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:26,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-21 11:24:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:26,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-21 11:24:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:26,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-21 11:24:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:26,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-21 11:24:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:26,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-21 11:24:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:26,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-21 11:24:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:26,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-21 11:24:26,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:26,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-21 11:24:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:26,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-21 11:24:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:26,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-21 11:24:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:26,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-21 11:24:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:26,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-21 11:24:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:26,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-21 11:24:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:26,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-21 11:24:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:26,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-21 11:24:26,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:26,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392873089] [2024-09-21 11:24:26,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392873089] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:26,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920192069] [2024-09-21 11:24:26,384 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-21 11:24:26,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:26,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:26,388 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) [2024-09-21 11:24:26,389 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-09-21 11:24:26,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:26,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-21 11:24:26,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:26,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-21 11:24:26,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:27,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-21 11:24:27,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920192069] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:27,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:27,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 44 [2024-09-21 11:24:27,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007351571] [2024-09-21 11:24:27,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:27,088 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-21 11:24:27,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:27,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-21 11:24:27,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=485, Invalid=1407, Unknown=0, NotChecked=0, Total=1892 [2024-09-21 11:24:27,089 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand has 44 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 44 states have internal predecessors, (70), 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) [2024-09-21 11:24:27,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:27,231 INFO L93 Difference]: Finished difference Result 236 states and 257 transitions. [2024-09-21 11:24:27,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-21 11:24:27,231 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 44 states have internal predecessors, (70), 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 164 [2024-09-21 11:24:27,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:27,232 INFO L225 Difference]: With dead ends: 236 [2024-09-21 11:24:27,232 INFO L226 Difference]: Without dead ends: 168 [2024-09-21 11:24:27,233 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 328 SyntacticMatches, 40 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1327 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=485, Invalid=1407, Unknown=0, NotChecked=0, Total=1892 [2024-09-21 11:24:27,236 INFO L434 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:27,236 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 344 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:24:27,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-09-21 11:24:27,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-09-21 11:24:27,253 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) [2024-09-21 11:24:27,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 169 transitions. [2024-09-21 11:24:27,258 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 169 transitions. Word has length 164 [2024-09-21 11:24:27,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:27,258 INFO L474 AbstractCegarLoop]: Abstraction has 168 states and 169 transitions. [2024-09-21 11:24:27,259 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 44 states have internal predecessors, (70), 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) [2024-09-21 11:24:27,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:27,259 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 169 transitions. [2024-09-21 11:24:27,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-09-21 11:24:27,260 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:27,264 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:27,287 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-09-21 11:24:27,464 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 [2024-09-21 11:24:27,465 INFO L399 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:27,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:27,465 INFO L85 PathProgramCache]: Analyzing trace with hash -377867399, now seen corresponding path program 38 times [2024-09-21 11:24:27,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:27,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044162208] [2024-09-21 11:24:27,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:27,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:27,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:27,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-21 11:24:27,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:27,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-21 11:24:27,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:27,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-21 11:24:27,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:27,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-21 11:24:27,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:27,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-21 11:24:27,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:27,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-21 11:24:27,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:27,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-21 11:24:27,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:27,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-21 11:24:27,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:27,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-21 11:24:27,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:27,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-21 11:24:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:27,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-21 11:24:27,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:27,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-21 11:24:27,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:27,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-21 11:24:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:27,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-21 11:24:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:27,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-21 11:24:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:27,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-21 11:24:27,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:27,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-21 11:24:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:27,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-21 11:24:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:27,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-21 11:24:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:28,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 228 proven. 571 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-21 11:24:28,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:28,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044162208] [2024-09-21 11:24:28,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044162208] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:28,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437268536] [2024-09-21 11:24:28,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 11:24:28,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:28,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:28,004 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) [2024-09-21 11:24:28,008 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-09-21 11:24:28,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 11:24:28,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:24:28,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-21 11:24:28,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:28,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 248 proven. 551 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-21 11:24:28,173 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:28,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 248 proven. 551 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-21 11:24:28,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437268536] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:28,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:28,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 28 [2024-09-21 11:24:28,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431579512] [2024-09-21 11:24:28,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:28,534 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-21 11:24:28,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:28,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-21 11:24:28,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=490, Unknown=0, NotChecked=0, Total=756 [2024-09-21 11:24:28,534 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) [2024-09-21 11:24:28,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:28,646 INFO L93 Difference]: Finished difference Result 181 states and 183 transitions. [2024-09-21 11:24:28,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-21 11:24:28,647 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 [2024-09-21 11:24:28,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:28,648 INFO L225 Difference]: With dead ends: 181 [2024-09-21 11:24:28,648 INFO L226 Difference]: Without dead ends: 179 [2024-09-21 11:24:28,648 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 345 SyntacticMatches, 42 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=272, Invalid=540, Unknown=0, NotChecked=0, Total=812 [2024-09-21 11:24:28,649 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:28,649 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 103 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:24:28,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-09-21 11:24:28,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 175. [2024-09-21 11:24:28,660 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) [2024-09-21 11:24:28,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2024-09-21 11:24:28,661 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 165 [2024-09-21 11:24:28,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:28,662 INFO L474 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2024-09-21 11:24:28,662 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) [2024-09-21 11:24:28,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:28,662 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2024-09-21 11:24:28,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-09-21 11:24:28,662 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:28,663 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:28,675 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-09-21 11:24:28,866 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 [2024-09-21 11:24:28,866 INFO L399 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:28,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:28,867 INFO L85 PathProgramCache]: Analyzing trace with hash -129055989, now seen corresponding path program 39 times [2024-09-21 11:24:28,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:28,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807823088] [2024-09-21 11:24:28,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:28,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:28,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:29,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:29,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:29,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-21 11:24:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:29,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-21 11:24:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:29,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-21 11:24:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:29,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-21 11:24:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:29,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-21 11:24:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:29,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-21 11:24:29,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:29,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-21 11:24:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:29,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-21 11:24:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:29,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-21 11:24:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:29,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-21 11:24:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:29,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-21 11:24:29,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:29,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-21 11:24:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:29,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-21 11:24:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:29,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-21 11:24:29,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:29,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-21 11:24:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:29,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-21 11:24:29,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:29,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-21 11:24:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:29,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-21 11:24:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:29,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-21 11:24:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:29,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-21 11:24:29,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:29,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-21 11:24:29,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:29,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807823088] [2024-09-21 11:24:29,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807823088] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:29,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676922953] [2024-09-21 11:24:29,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-21 11:24:29,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:29,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:29,508 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) [2024-09-21 11:24:29,511 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-09-21 11:24:29,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2024-09-21 11:24:29,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:24:29,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-21 11:24:29,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:29,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-21 11:24:29,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:30,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-21 11:24:30,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676922953] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:30,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:30,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 46 [2024-09-21 11:24:30,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400913441] [2024-09-21 11:24:30,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:30,197 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-21 11:24:30,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:30,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-21 11:24:30,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=1540, Unknown=0, NotChecked=0, Total=2070 [2024-09-21 11:24:30,198 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand has 46 states, 46 states have (on average 1.5869565217391304) internal successors, (73), 46 states have internal predecessors, (73), 22 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-21 11:24:30,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:30,431 INFO L93 Difference]: Finished difference Result 247 states and 269 transitions. [2024-09-21 11:24:30,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-21 11:24:30,431 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.5869565217391304) internal successors, (73), 46 states have internal predecessors, (73), 22 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 172 [2024-09-21 11:24:30,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:30,432 INFO L225 Difference]: With dead ends: 247 [2024-09-21 11:24:30,436 INFO L226 Difference]: Without dead ends: 176 [2024-09-21 11:24:30,437 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 344 SyntacticMatches, 42 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1457 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=530, Invalid=1540, Unknown=0, NotChecked=0, Total=2070 [2024-09-21 11:24:30,438 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:30,438 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 406 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:24:30,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-09-21 11:24:30,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-09-21 11:24:30,454 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) [2024-09-21 11:24:30,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 177 transitions. [2024-09-21 11:24:30,456 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 177 transitions. Word has length 172 [2024-09-21 11:24:30,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:30,457 INFO L474 AbstractCegarLoop]: Abstraction has 176 states and 177 transitions. [2024-09-21 11:24:30,457 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.5869565217391304) internal successors, (73), 46 states have internal predecessors, (73), 22 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-21 11:24:30,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:30,457 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 177 transitions. [2024-09-21 11:24:30,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-09-21 11:24:30,458 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:30,458 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:30,477 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-09-21 11:24:30,662 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 [2024-09-21 11:24:30,663 INFO L399 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:30,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:30,663 INFO L85 PathProgramCache]: Analyzing trace with hash -196967529, now seen corresponding path program 40 times [2024-09-21 11:24:30,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:30,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979520995] [2024-09-21 11:24:30,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:30,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:30,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:31,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:31,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:31,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-21 11:24:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:31,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-21 11:24:31,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:31,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-21 11:24:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:31,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-21 11:24:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:31,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-21 11:24:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:31,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-21 11:24:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:31,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-21 11:24:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:31,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-21 11:24:31,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:31,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-21 11:24:31,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:31,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-21 11:24:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:31,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-21 11:24:31,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:31,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-21 11:24:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:31,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-21 11:24:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:31,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-21 11:24:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:31,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-21 11:24:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:31,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-21 11:24:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:31,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-21 11:24:31,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:31,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-21 11:24:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:31,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-21 11:24:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:31,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-21 11:24:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:31,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 250 proven. 631 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-21 11:24:31,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:31,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979520995] [2024-09-21 11:24:31,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979520995] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:31,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31594176] [2024-09-21 11:24:31,111 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-21 11:24:31,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:31,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:31,115 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) [2024-09-21 11:24:31,116 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-09-21 11:24:31,178 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-21 11:24:31,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:24:31,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-21 11:24:31,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:31,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 271 proven. 610 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-21 11:24:31,266 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:31,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 271 proven. 610 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-21 11:24:31,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31594176] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:31,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:31,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 29 [2024-09-21 11:24:31,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730972234] [2024-09-21 11:24:31,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:31,683 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-21 11:24:31,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:31,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-21 11:24:31,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=523, Unknown=0, NotChecked=0, Total=812 [2024-09-21 11:24:31,685 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) [2024-09-21 11:24:31,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:31,812 INFO L93 Difference]: Finished difference Result 189 states and 191 transitions. [2024-09-21 11:24:31,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-21 11:24:31,812 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 [2024-09-21 11:24:31,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:31,814 INFO L225 Difference]: With dead ends: 189 [2024-09-21 11:24:31,814 INFO L226 Difference]: Without dead ends: 187 [2024-09-21 11:24:31,814 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 [2024-09-21 11:24:31,815 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:31,815 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 104 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:24:31,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-09-21 11:24:31,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2024-09-21 11:24:31,826 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) [2024-09-21 11:24:31,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2024-09-21 11:24:31,829 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 173 [2024-09-21 11:24:31,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:31,830 INFO L474 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2024-09-21 11:24:31,830 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) [2024-09-21 11:24:31,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:31,830 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2024-09-21 11:24:31,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-09-21 11:24:31,831 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:31,831 INFO L216 NwaCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:31,844 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2024-09-21 11:24:32,035 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 [2024-09-21 11:24:32,036 INFO L399 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:32,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:32,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1190114605, now seen corresponding path program 41 times [2024-09-21 11:24:32,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:32,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237687581] [2024-09-21 11:24:32,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:32,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:32,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:32,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-21 11:24:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:32,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-21 11:24:32,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:32,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-21 11:24:32,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:32,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-21 11:24:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:32,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-21 11:24:32,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:32,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-21 11:24:32,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:32,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-21 11:24:32,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:32,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-21 11:24:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:32,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-21 11:24:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:32,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-21 11:24:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:32,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-21 11:24:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:32,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-21 11:24:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:32,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-21 11:24:32,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:32,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-21 11:24:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:32,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-21 11:24:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:32,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-21 11:24:32,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:32,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-21 11:24:32,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:32,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-21 11:24:32,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:32,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-21 11:24:32,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:32,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-21 11:24:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:32,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-21 11:24:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:32,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-21 11:24:32,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:32,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237687581] [2024-09-21 11:24:32,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237687581] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:32,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974157014] [2024-09-21 11:24:32,768 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-21 11:24:32,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:32,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:32,770 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) [2024-09-21 11:24:32,771 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-09-21 11:24:32,858 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-09-21 11:24:32,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:24:32,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-21 11:24:32,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:32,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-21 11:24:32,948 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:33,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-21 11:24:33,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974157014] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:33,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:33,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 48 [2024-09-21 11:24:33,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525572696] [2024-09-21 11:24:33,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:33,560 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-21 11:24:33,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:33,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-21 11:24:33,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=577, Invalid=1679, Unknown=0, NotChecked=0, Total=2256 [2024-09-21 11:24:33,561 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand has 48 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 48 states have internal predecessors, (76), 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) [2024-09-21 11:24:33,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:33,809 INFO L93 Difference]: Finished difference Result 258 states and 281 transitions. [2024-09-21 11:24:33,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-21 11:24:33,810 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 48 states have internal predecessors, (76), 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 180 [2024-09-21 11:24:33,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:33,812 INFO L225 Difference]: With dead ends: 258 [2024-09-21 11:24:33,812 INFO L226 Difference]: Without dead ends: 184 [2024-09-21 11:24:33,812 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 360 SyntacticMatches, 44 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1593 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=577, Invalid=1679, Unknown=0, NotChecked=0, Total=2256 [2024-09-21 11:24:33,813 INFO L434 NwaCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:33,813 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 412 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:24:33,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-09-21 11:24:33,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2024-09-21 11:24:33,825 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) [2024-09-21 11:24:33,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 185 transitions. [2024-09-21 11:24:33,826 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 185 transitions. Word has length 180 [2024-09-21 11:24:33,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:33,827 INFO L474 AbstractCegarLoop]: Abstraction has 184 states and 185 transitions. [2024-09-21 11:24:33,827 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 48 states have internal predecessors, (76), 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) [2024-09-21 11:24:33,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:33,827 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 185 transitions. [2024-09-21 11:24:33,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-09-21 11:24:33,828 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:33,828 INFO L216 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:33,844 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-09-21 11:24:34,032 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 [2024-09-21 11:24:34,033 INFO L399 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:34,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:34,033 INFO L85 PathProgramCache]: Analyzing trace with hash 143665593, now seen corresponding path program 42 times [2024-09-21 11:24:34,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:34,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882610539] [2024-09-21 11:24:34,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:34,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:34,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:34,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:34,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-21 11:24:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:34,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-21 11:24:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:34,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-21 11:24:34,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:34,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-21 11:24:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:34,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-21 11:24:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:34,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-21 11:24:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:34,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-21 11:24:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:34,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-21 11:24:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:34,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-21 11:24:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:34,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-21 11:24:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:34,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-21 11:24:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:34,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-21 11:24:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:34,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-21 11:24:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:34,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-21 11:24:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:34,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-21 11:24:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:34,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-21 11:24:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:34,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-21 11:24:34,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:34,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-21 11:24:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:34,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-21 11:24:34,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:34,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-21 11:24:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:34,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-21 11:24:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:34,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 273 proven. 694 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-21 11:24:34,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:34,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882610539] [2024-09-21 11:24:34,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882610539] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:34,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289554167] [2024-09-21 11:24:34,540 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-21 11:24:34,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:34,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:34,541 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) [2024-09-21 11:24:34,545 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-09-21 11:24:34,623 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2024-09-21 11:24:34,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:24:34,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-21 11:24:34,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:34,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 295 proven. 672 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-21 11:24:34,735 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:35,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 295 proven. 672 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-21 11:24:35,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289554167] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:35,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:35,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 30 [2024-09-21 11:24:35,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726675472] [2024-09-21 11:24:35,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:35,216 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-21 11:24:35,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:35,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-21 11:24:35,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=557, Unknown=0, NotChecked=0, Total=870 [2024-09-21 11:24:35,217 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) [2024-09-21 11:24:35,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:35,385 INFO L93 Difference]: Finished difference Result 197 states and 199 transitions. [2024-09-21 11:24:35,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-21 11:24:35,386 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 [2024-09-21 11:24:35,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:35,391 INFO L225 Difference]: With dead ends: 197 [2024-09-21 11:24:35,391 INFO L226 Difference]: Without dead ends: 195 [2024-09-21 11:24:35,392 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 [2024-09-21 11:24:35,392 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:35,392 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 97 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:24:35,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-09-21 11:24:35,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 191. [2024-09-21 11:24:35,414 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) [2024-09-21 11:24:35,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2024-09-21 11:24:35,415 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 181 [2024-09-21 11:24:35,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:35,415 INFO L474 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2024-09-21 11:24:35,416 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) [2024-09-21 11:24:35,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:35,416 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2024-09-21 11:24:35,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-09-21 11:24:35,416 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:35,416 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:35,443 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-09-21 11:24:35,617 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 [2024-09-21 11:24:35,617 INFO L399 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:35,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:35,618 INFO L85 PathProgramCache]: Analyzing trace with hash 16991435, now seen corresponding path program 43 times [2024-09-21 11:24:35,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:35,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817431874] [2024-09-21 11:24:35,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:35,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:36,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:36,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-21 11:24:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:36,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-21 11:24:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:36,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-21 11:24:36,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:36,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-21 11:24:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:36,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-21 11:24:36,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:36,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-21 11:24:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:36,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-21 11:24:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:36,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-21 11:24:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:36,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-21 11:24:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:36,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-21 11:24:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:36,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-21 11:24:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:36,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-21 11:24:36,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:36,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-21 11:24:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:36,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-21 11:24:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:36,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-21 11:24:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:36,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-21 11:24:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:36,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-21 11:24:36,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:36,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-21 11:24:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:36,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-21 11:24:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:36,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-21 11:24:36,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:36,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-21 11:24:36,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:36,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-21 11:24:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:36,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-21 11:24:36,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:36,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817431874] [2024-09-21 11:24:36,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817431874] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:36,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009518608] [2024-09-21 11:24:36,580 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-21 11:24:36,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:36,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:36,581 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) [2024-09-21 11:24:36,582 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-09-21 11:24:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:36,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-21 11:24:36,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:36,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-21 11:24:36,760 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:37,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-21 11:24:37,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009518608] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:37,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:37,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 50 [2024-09-21 11:24:37,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360548012] [2024-09-21 11:24:37,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:37,521 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-09-21 11:24:37,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:37,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-09-21 11:24:37,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=626, Invalid=1824, Unknown=0, NotChecked=0, Total=2450 [2024-09-21 11:24:37,522 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand has 50 states, 50 states have (on average 1.58) internal successors, (79), 50 states have internal predecessors, (79), 24 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-21 11:24:37,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:37,765 INFO L93 Difference]: Finished difference Result 269 states and 293 transitions. [2024-09-21 11:24:37,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-09-21 11:24:37,765 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.58) internal successors, (79), 50 states have internal predecessors, (79), 24 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 188 [2024-09-21 11:24:37,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:37,767 INFO L225 Difference]: With dead ends: 269 [2024-09-21 11:24:37,767 INFO L226 Difference]: Without dead ends: 192 [2024-09-21 11:24:37,772 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 376 SyntacticMatches, 46 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1735 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=626, Invalid=1824, Unknown=0, NotChecked=0, Total=2450 [2024-09-21 11:24:37,772 INFO L434 NwaCegarLoop]: 53 mSDtfsCounter, 0 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:37,772 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 407 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:24:37,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-09-21 11:24:37,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2024-09-21 11:24:37,792 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) [2024-09-21 11:24:37,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 193 transitions. [2024-09-21 11:24:37,793 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 193 transitions. Word has length 188 [2024-09-21 11:24:37,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:37,797 INFO L474 AbstractCegarLoop]: Abstraction has 192 states and 193 transitions. [2024-09-21 11:24:37,797 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.58) internal successors, (79), 50 states have internal predecessors, (79), 24 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-21 11:24:37,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:37,797 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 193 transitions. [2024-09-21 11:24:37,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-09-21 11:24:37,798 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:37,798 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:37,822 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-09-21 11:24:37,998 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 [2024-09-21 11:24:37,999 INFO L399 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:37,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:37,999 INFO L85 PathProgramCache]: Analyzing trace with hash 979135831, now seen corresponding path program 44 times [2024-09-21 11:24:37,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:38,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008605970] [2024-09-21 11:24:38,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:38,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:38,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:38,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-21 11:24:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:38,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-21 11:24:38,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:38,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-21 11:24:38,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:38,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-21 11:24:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:38,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-21 11:24:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:38,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-21 11:24:38,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:38,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-21 11:24:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:38,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-21 11:24:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:38,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-21 11:24:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:38,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-21 11:24:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:38,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-21 11:24:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:38,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-21 11:24:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:38,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-21 11:24:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:38,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-21 11:24:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:38,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-21 11:24:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:38,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-21 11:24:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:38,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-21 11:24:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:38,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-21 11:24:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:38,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-21 11:24:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:38,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-21 11:24:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:38,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-21 11:24:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:38,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-21 11:24:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:38,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 297 proven. 760 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-21 11:24:38,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:38,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008605970] [2024-09-21 11:24:38,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008605970] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:38,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399359205] [2024-09-21 11:24:38,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 11:24:38,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:38,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:38,559 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) [2024-09-21 11:24:38,560 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-09-21 11:24:38,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 11:24:38,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:24:38,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-09-21 11:24:38,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:38,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 320 proven. 737 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-21 11:24:38,782 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:39,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 320 proven. 737 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-21 11:24:39,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399359205] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:39,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:39,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 31 [2024-09-21 11:24:39,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507920411] [2024-09-21 11:24:39,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:39,309 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-21 11:24:39,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:39,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-21 11:24:39,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=592, Unknown=0, NotChecked=0, Total=930 [2024-09-21 11:24:39,310 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) [2024-09-21 11:24:39,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:39,474 INFO L93 Difference]: Finished difference Result 205 states and 207 transitions. [2024-09-21 11:24:39,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-21 11:24:39,474 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 [2024-09-21 11:24:39,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:39,475 INFO L225 Difference]: With dead ends: 205 [2024-09-21 11:24:39,475 INFO L226 Difference]: Without dead ends: 203 [2024-09-21 11:24:39,476 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 [2024-09-21 11:24:39,476 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:39,476 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 98 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:24:39,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-09-21 11:24:39,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 199. [2024-09-21 11:24:39,505 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) [2024-09-21 11:24:39,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2024-09-21 11:24:39,506 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 189 [2024-09-21 11:24:39,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:39,506 INFO L474 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2024-09-21 11:24:39,506 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) [2024-09-21 11:24:39,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:39,506 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2024-09-21 11:24:39,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-09-21 11:24:39,507 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:39,507 INFO L216 NwaCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:39,519 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-09-21 11:24:39,707 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 [2024-09-21 11:24:39,708 INFO L399 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:39,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:39,708 INFO L85 PathProgramCache]: Analyzing trace with hash 2104447853, now seen corresponding path program 45 times [2024-09-21 11:24:39,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:39,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436171522] [2024-09-21 11:24:39,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:39,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:40,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:40,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:40,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-21 11:24:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:40,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-21 11:24:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:40,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-21 11:24:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:40,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-21 11:24:40,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:40,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-21 11:24:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:40,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-21 11:24:40,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:40,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-21 11:24:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:40,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-21 11:24:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:40,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-21 11:24:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:40,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-21 11:24:40,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:40,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-21 11:24:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:40,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-21 11:24:40,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:40,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-21 11:24:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:40,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-21 11:24:40,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:40,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-21 11:24:40,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:40,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-21 11:24:40,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:40,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-21 11:24:40,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:40,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-21 11:24:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:40,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-21 11:24:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:40,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-21 11:24:40,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:40,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-21 11:24:40,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:40,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-21 11:24:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:40,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-21 11:24:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:40,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-21 11:24:40,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:40,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436171522] [2024-09-21 11:24:40,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436171522] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:40,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699531763] [2024-09-21 11:24:40,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-21 11:24:40,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:40,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:40,481 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) [2024-09-21 11:24:40,482 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-09-21 11:24:40,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2024-09-21 11:24:40,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:24:40,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-21 11:24:40,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:40,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-21 11:24:40,689 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:41,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-21 11:24:41,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699531763] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:41,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:41,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 52 [2024-09-21 11:24:41,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292247628] [2024-09-21 11:24:41,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:41,634 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-09-21 11:24:41,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:41,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-09-21 11:24:41,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=677, Invalid=1975, Unknown=0, NotChecked=0, Total=2652 [2024-09-21 11:24:41,638 INFO L87 Difference]: Start difference. First operand 199 states and 200 transitions. Second operand has 52 states, 52 states have (on average 1.5769230769230769) internal successors, (82), 52 states have internal predecessors, (82), 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) [2024-09-21 11:24:41,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:41,887 INFO L93 Difference]: Finished difference Result 280 states and 305 transitions. [2024-09-21 11:24:41,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-09-21 11:24:41,887 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.5769230769230769) internal successors, (82), 52 states have internal predecessors, (82), 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 196 [2024-09-21 11:24:41,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:41,889 INFO L225 Difference]: With dead ends: 280 [2024-09-21 11:24:41,889 INFO L226 Difference]: Without dead ends: 200 [2024-09-21 11:24:41,890 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 392 SyntacticMatches, 48 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1883 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=677, Invalid=1975, Unknown=0, NotChecked=0, Total=2652 [2024-09-21 11:24:41,890 INFO L434 NwaCegarLoop]: 55 mSDtfsCounter, 0 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:41,890 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 454 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:24:41,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-09-21 11:24:41,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2024-09-21 11:24:41,913 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) [2024-09-21 11:24:41,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 201 transitions. [2024-09-21 11:24:41,918 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 201 transitions. Word has length 196 [2024-09-21 11:24:41,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:41,918 INFO L474 AbstractCegarLoop]: Abstraction has 200 states and 201 transitions. [2024-09-21 11:24:41,918 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.5769230769230769) internal successors, (82), 52 states have internal predecessors, (82), 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) [2024-09-21 11:24:41,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:41,918 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 201 transitions. [2024-09-21 11:24:41,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-09-21 11:24:41,919 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:41,919 INFO L216 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:41,944 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2024-09-21 11:24:42,122 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 [2024-09-21 11:24:42,122 INFO L399 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:42,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:42,123 INFO L85 PathProgramCache]: Analyzing trace with hash 344797177, now seen corresponding path program 46 times [2024-09-21 11:24:42,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:42,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852786503] [2024-09-21 11:24:42,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:42,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:42,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:42,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:42,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-21 11:24:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:42,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-21 11:24:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:42,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-21 11:24:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:42,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-21 11:24:42,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:42,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-21 11:24:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:42,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-21 11:24:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:42,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-21 11:24:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:42,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-21 11:24:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:42,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-21 11:24:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:42,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-21 11:24:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:42,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-21 11:24:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:42,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-21 11:24:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:42,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-21 11:24:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:42,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-21 11:24:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:42,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-21 11:24:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:42,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-21 11:24:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:42,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-21 11:24:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:42,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-21 11:24:42,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:42,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-21 11:24:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:42,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-21 11:24:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:42,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-21 11:24:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:42,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-21 11:24:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:42,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-21 11:24:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:42,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 322 proven. 829 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-21 11:24:42,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:42,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852786503] [2024-09-21 11:24:42,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852786503] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:42,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24846397] [2024-09-21 11:24:42,892 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-21 11:24:42,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:42,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:42,893 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) [2024-09-21 11:24:42,894 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-09-21 11:24:42,967 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-21 11:24:42,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:24:42,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-21 11:24:42,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:43,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 346 proven. 805 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-21 11:24:43,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:43,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 346 proven. 805 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-21 11:24:43,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24846397] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:43,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:43,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 32 [2024-09-21 11:24:43,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261314941] [2024-09-21 11:24:43,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:43,546 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-21 11:24:43,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:43,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-21 11:24:43,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=628, Unknown=0, NotChecked=0, Total=992 [2024-09-21 11:24:43,547 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) [2024-09-21 11:24:43,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:43,670 INFO L93 Difference]: Finished difference Result 213 states and 215 transitions. [2024-09-21 11:24:43,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-21 11:24:43,671 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 [2024-09-21 11:24:43,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:43,672 INFO L225 Difference]: With dead ends: 213 [2024-09-21 11:24:43,673 INFO L226 Difference]: Without dead ends: 211 [2024-09-21 11:24:43,673 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 415 SyntacticMatches, 48 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=370, Invalid=686, Unknown=0, NotChecked=0, Total=1056 [2024-09-21 11:24:43,673 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:43,673 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 99 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:24:43,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-09-21 11:24:43,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 207. [2024-09-21 11:24:43,683 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) [2024-09-21 11:24:43,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2024-09-21 11:24:43,684 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 197 [2024-09-21 11:24:43,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:43,684 INFO L474 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2024-09-21 11:24:43,685 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) [2024-09-21 11:24:43,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:43,685 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2024-09-21 11:24:43,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-09-21 11:24:43,685 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:43,686 INFO L216 NwaCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:43,698 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-09-21 11:24:43,886 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 [2024-09-21 11:24:43,886 INFO L399 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:43,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:43,887 INFO L85 PathProgramCache]: Analyzing trace with hash 767473291, now seen corresponding path program 47 times [2024-09-21 11:24:43,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:43,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984640346] [2024-09-21 11:24:43,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:43,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:44,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:44,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:44,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-21 11:24:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:44,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-21 11:24:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:44,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-21 11:24:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:44,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-21 11:24:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:44,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-21 11:24:44,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:44,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-21 11:24:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:44,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-21 11:24:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:44,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-21 11:24:44,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:44,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-21 11:24:44,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:44,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-21 11:24:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:44,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-21 11:24:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:44,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-21 11:24:44,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:44,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-21 11:24:44,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:44,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-21 11:24:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:44,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-21 11:24:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:44,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-21 11:24:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:44,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-21 11:24:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:44,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-21 11:24:44,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:44,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-21 11:24:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:44,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-21 11:24:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:44,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-21 11:24:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:44,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-21 11:24:44,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:44,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-21 11:24:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:44,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-21 11:24:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:44,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-21 11:24:44,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:44,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984640346] [2024-09-21 11:24:44,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984640346] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:44,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224378395] [2024-09-21 11:24:44,718 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-21 11:24:44,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:44,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:44,720 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) [2024-09-21 11:24:44,721 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-09-21 11:24:44,806 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2024-09-21 11:24:44,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:24:44,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-09-21 11:24:44,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:44,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-21 11:24:44,894 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:45,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-21 11:24:45,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224378395] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:45,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:45,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 54 [2024-09-21 11:24:45,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253852855] [2024-09-21 11:24:45,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:45,654 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-09-21 11:24:45,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:45,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-09-21 11:24:45,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=730, Invalid=2132, Unknown=0, NotChecked=0, Total=2862 [2024-09-21 11:24:45,656 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand has 54 states, 54 states have (on average 1.5740740740740742) internal successors, (85), 54 states have internal predecessors, (85), 26 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-21 11:24:45,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:45,881 INFO L93 Difference]: Finished difference Result 291 states and 317 transitions. [2024-09-21 11:24:45,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-09-21 11:24:45,882 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.5740740740740742) internal successors, (85), 54 states have internal predecessors, (85), 26 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 204 [2024-09-21 11:24:45,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:45,883 INFO L225 Difference]: With dead ends: 291 [2024-09-21 11:24:45,883 INFO L226 Difference]: Without dead ends: 208 [2024-09-21 11:24:45,884 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 408 SyntacticMatches, 50 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2037 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=730, Invalid=2132, Unknown=0, NotChecked=0, Total=2862 [2024-09-21 11:24:45,884 INFO L434 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:45,884 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 381 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:24:45,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-09-21 11:24:45,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2024-09-21 11:24:45,908 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) [2024-09-21 11:24:45,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 209 transitions. [2024-09-21 11:24:45,911 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 209 transitions. Word has length 204 [2024-09-21 11:24:45,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:45,911 INFO L474 AbstractCegarLoop]: Abstraction has 208 states and 209 transitions. [2024-09-21 11:24:45,912 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.5740740740740742) internal successors, (85), 54 states have internal predecessors, (85), 26 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-21 11:24:45,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:45,912 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 209 transitions. [2024-09-21 11:24:45,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-09-21 11:24:45,916 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:45,916 INFO L216 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:45,928 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-09-21 11:24:46,116 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 [2024-09-21 11:24:46,117 INFO L399 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:46,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:46,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1017988887, now seen corresponding path program 48 times [2024-09-21 11:24:46,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:46,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985972785] [2024-09-21 11:24:46,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:46,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:46,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:46,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-21 11:24:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:46,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-21 11:24:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:46,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-21 11:24:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:46,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-21 11:24:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:46,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-21 11:24:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:46,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-21 11:24:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:46,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-21 11:24:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:46,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-21 11:24:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:46,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-21 11:24:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:46,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-21 11:24:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:46,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-21 11:24:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:46,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-21 11:24:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:46,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-21 11:24:46,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:46,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-21 11:24:46,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:46,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-21 11:24:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:46,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-21 11:24:46,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:46,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-21 11:24:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:46,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-21 11:24:46,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:46,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-21 11:24:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:46,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-21 11:24:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:46,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-21 11:24:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:46,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-21 11:24:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:46,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-21 11:24:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:46,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-21 11:24:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:46,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 348 proven. 901 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-21 11:24:46,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:46,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985972785] [2024-09-21 11:24:46,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985972785] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:46,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819892754] [2024-09-21 11:24:46,695 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-21 11:24:46,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:46,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:46,696 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) [2024-09-21 11:24:46,697 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-09-21 11:24:46,797 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2024-09-21 11:24:46,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:24:46,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-21 11:24:46,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:46,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 373 proven. 876 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-21 11:24:46,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:47,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 373 proven. 876 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-21 11:24:47,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819892754] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:47,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:47,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 33 [2024-09-21 11:24:47,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000025512] [2024-09-21 11:24:47,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:47,551 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-21 11:24:47,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:47,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-21 11:24:47,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=665, Unknown=0, NotChecked=0, Total=1056 [2024-09-21 11:24:47,552 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) [2024-09-21 11:24:47,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:47,704 INFO L93 Difference]: Finished difference Result 221 states and 223 transitions. [2024-09-21 11:24:47,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-21 11:24:47,705 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 [2024-09-21 11:24:47,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:47,706 INFO L225 Difference]: With dead ends: 221 [2024-09-21 11:24:47,706 INFO L226 Difference]: Without dead ends: 219 [2024-09-21 11:24:47,707 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 [2024-09-21 11:24:47,707 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:47,707 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 114 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:24:47,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-09-21 11:24:47,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 215. [2024-09-21 11:24:47,733 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) [2024-09-21 11:24:47,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 216 transitions. [2024-09-21 11:24:47,734 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 216 transitions. Word has length 205 [2024-09-21 11:24:47,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:47,735 INFO L474 AbstractCegarLoop]: Abstraction has 215 states and 216 transitions. [2024-09-21 11:24:47,735 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) [2024-09-21 11:24:47,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:47,735 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 216 transitions. [2024-09-21 11:24:47,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-09-21 11:24:47,736 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:47,736 INFO L216 NwaCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:47,749 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-09-21 11:24:47,936 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 [2024-09-21 11:24:47,937 INFO L399 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:47,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:47,938 INFO L85 PathProgramCache]: Analyzing trace with hash 151650733, now seen corresponding path program 49 times [2024-09-21 11:24:47,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:47,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680184056] [2024-09-21 11:24:47,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:47,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:48,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:48,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-21 11:24:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:48,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-21 11:24:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:48,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-21 11:24:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:48,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-21 11:24:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:48,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-21 11:24:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:48,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-21 11:24:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:48,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-21 11:24:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:48,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-21 11:24:48,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:48,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-21 11:24:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:48,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-21 11:24:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:48,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-21 11:24:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:48,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-21 11:24:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:48,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-21 11:24:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:48,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-21 11:24:48,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:48,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-21 11:24:48,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:48,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-21 11:24:48,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:48,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-21 11:24:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:48,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-21 11:24:48,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:48,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-21 11:24:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:48,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-21 11:24:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:48,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-21 11:24:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:48,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-21 11:24:48,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:48,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-21 11:24:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:48,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-21 11:24:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:48,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-21 11:24:48,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:48,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-21 11:24:48,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:48,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680184056] [2024-09-21 11:24:48,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680184056] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:48,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916657301] [2024-09-21 11:24:48,997 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-21 11:24:48,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:48,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:48,998 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) [2024-09-21 11:24:49,000 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-09-21 11:24:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:49,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-21 11:24:49,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:49,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-21 11:24:49,222 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:49,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-21 11:24:49,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916657301] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:49,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:49,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 56 [2024-09-21 11:24:49,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019389701] [2024-09-21 11:24:49,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:49,995 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-09-21 11:24:49,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:49,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-09-21 11:24:49,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=785, Invalid=2295, Unknown=0, NotChecked=0, Total=3080 [2024-09-21 11:24:49,996 INFO L87 Difference]: Start difference. First operand 215 states and 216 transitions. Second operand has 56 states, 56 states have (on average 1.5714285714285714) internal successors, (88), 56 states have internal predecessors, (88), 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) [2024-09-21 11:24:50,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:50,282 INFO L93 Difference]: Finished difference Result 302 states and 329 transitions. [2024-09-21 11:24:50,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-09-21 11:24:50,282 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.5714285714285714) internal successors, (88), 56 states have internal predecessors, (88), 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 212 [2024-09-21 11:24:50,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:50,284 INFO L225 Difference]: With dead ends: 302 [2024-09-21 11:24:50,284 INFO L226 Difference]: Without dead ends: 216 [2024-09-21 11:24:50,284 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 424 SyntacticMatches, 52 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2197 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=785, Invalid=2295, Unknown=0, NotChecked=0, Total=3080 [2024-09-21 11:24:50,284 INFO L434 NwaCegarLoop]: 59 mSDtfsCounter, 0 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:50,284 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 510 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:24:50,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-09-21 11:24:50,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2024-09-21 11:24:50,311 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) [2024-09-21 11:24:50,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 217 transitions. [2024-09-21 11:24:50,312 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 217 transitions. Word has length 212 [2024-09-21 11:24:50,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:50,316 INFO L474 AbstractCegarLoop]: Abstraction has 216 states and 217 transitions. [2024-09-21 11:24:50,316 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.5714285714285714) internal successors, (88), 56 states have internal predecessors, (88), 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) [2024-09-21 11:24:50,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:50,316 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 217 transitions. [2024-09-21 11:24:50,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-09-21 11:24:50,317 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:50,317 INFO L216 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:50,343 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-09-21 11:24:50,517 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 [2024-09-21 11:24:50,518 INFO L399 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:50,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:50,518 INFO L85 PathProgramCache]: Analyzing trace with hash -573225415, now seen corresponding path program 50 times [2024-09-21 11:24:50,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:50,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638894326] [2024-09-21 11:24:50,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:50,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:51,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:51,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-21 11:24:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:51,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-21 11:24:51,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:51,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-21 11:24:51,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:51,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-21 11:24:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:51,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-21 11:24:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:51,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-21 11:24:51,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:51,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-21 11:24:51,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:51,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-21 11:24:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:51,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-21 11:24:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:51,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-21 11:24:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:51,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-21 11:24:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:51,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-21 11:24:51,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:51,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-21 11:24:51,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:51,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-21 11:24:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:51,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-21 11:24:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:51,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-21 11:24:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:51,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-21 11:24:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:51,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-21 11:24:51,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:51,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-21 11:24:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:51,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-21 11:24:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:51,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-21 11:24:51,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:51,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-21 11:24:51,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:51,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-21 11:24:51,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:51,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-21 11:24:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:51,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-21 11:24:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:51,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 375 proven. 976 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-21 11:24:51,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:51,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638894326] [2024-09-21 11:24:51,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638894326] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:51,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742400005] [2024-09-21 11:24:51,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 11:24:51,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:51,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:51,155 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) [2024-09-21 11:24:51,157 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-09-21 11:24:51,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 11:24:51,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:24:51,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-09-21 11:24:51,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:51,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 401 proven. 950 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-21 11:24:51,469 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:52,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 401 proven. 950 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-21 11:24:52,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742400005] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:52,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:52,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 34 [2024-09-21 11:24:52,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493100371] [2024-09-21 11:24:52,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:52,234 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-21 11:24:52,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:52,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-21 11:24:52,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=703, Unknown=0, NotChecked=0, Total=1122 [2024-09-21 11:24:52,235 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) [2024-09-21 11:24:52,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:52,387 INFO L93 Difference]: Finished difference Result 229 states and 231 transitions. [2024-09-21 11:24:52,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-21 11:24:52,387 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 [2024-09-21 11:24:52,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:52,388 INFO L225 Difference]: With dead ends: 229 [2024-09-21 11:24:52,389 INFO L226 Difference]: Without dead ends: 227 [2024-09-21 11:24:52,389 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 447 SyntacticMatches, 54 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=425, Invalid=765, Unknown=0, NotChecked=0, Total=1190 [2024-09-21 11:24:52,389 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:52,390 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 112 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:24:52,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-09-21 11:24:52,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 223. [2024-09-21 11:24:52,401 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) [2024-09-21 11:24:52,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 224 transitions. [2024-09-21 11:24:52,402 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 224 transitions. Word has length 213 [2024-09-21 11:24:52,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:52,402 INFO L474 AbstractCegarLoop]: Abstraction has 223 states and 224 transitions. [2024-09-21 11:24:52,402 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) [2024-09-21 11:24:52,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:52,403 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 224 transitions. [2024-09-21 11:24:52,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-09-21 11:24:52,403 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:52,404 INFO L216 NwaCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:52,416 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-09-21 11:24:52,607 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 [2024-09-21 11:24:52,608 INFO L399 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:52,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:52,608 INFO L85 PathProgramCache]: Analyzing trace with hash 899487819, now seen corresponding path program 51 times [2024-09-21 11:24:52,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:52,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545154782] [2024-09-21 11:24:52,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:52,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:53,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:53,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-21 11:24:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:53,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-21 11:24:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:53,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-21 11:24:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:53,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-21 11:24:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:53,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-21 11:24:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:53,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-21 11:24:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:53,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-21 11:24:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:53,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-21 11:24:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:53,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-21 11:24:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:53,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-21 11:24:53,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:53,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-21 11:24:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:53,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-21 11:24:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:53,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-21 11:24:53,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:53,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-21 11:24:53,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:53,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-21 11:24:53,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:53,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-21 11:24:53,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:53,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-21 11:24:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:53,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-21 11:24:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:53,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-21 11:24:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:53,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-21 11:24:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:53,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-21 11:24:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:53,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-21 11:24:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:53,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-21 11:24:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:53,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-21 11:24:53,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:53,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-21 11:24:53,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:53,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-21 11:24:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:53,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-21 11:24:53,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:53,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545154782] [2024-09-21 11:24:53,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545154782] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:53,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294339748] [2024-09-21 11:24:53,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-21 11:24:53,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:53,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:53,705 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) [2024-09-21 11:24:53,706 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-09-21 11:24:53,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2024-09-21 11:24:53,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:24:53,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-21 11:24:53,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:53,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-21 11:24:53,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:54,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-21 11:24:54,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294339748] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:54,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:54,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57, 57] total 58 [2024-09-21 11:24:54,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498015861] [2024-09-21 11:24:54,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:54,835 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-09-21 11:24:54,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:54,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-09-21 11:24:54,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=842, Invalid=2464, Unknown=0, NotChecked=0, Total=3306 [2024-09-21 11:24:54,836 INFO L87 Difference]: Start difference. First operand 223 states and 224 transitions. Second operand has 58 states, 58 states have (on average 1.5689655172413792) internal successors, (91), 58 states have internal predecessors, (91), 28 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-21 11:24:55,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:55,145 INFO L93 Difference]: Finished difference Result 313 states and 341 transitions. [2024-09-21 11:24:55,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-09-21 11:24:55,145 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.5689655172413792) internal successors, (91), 58 states have internal predecessors, (91), 28 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 220 [2024-09-21 11:24:55,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:55,147 INFO L225 Difference]: With dead ends: 313 [2024-09-21 11:24:55,147 INFO L226 Difference]: Without dead ends: 224 [2024-09-21 11:24:55,147 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 440 SyntacticMatches, 54 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2363 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=842, Invalid=2464, Unknown=0, NotChecked=0, Total=3306 [2024-09-21 11:24:55,147 INFO L434 NwaCegarLoop]: 61 mSDtfsCounter, 0 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:55,148 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 622 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:24:55,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-09-21 11:24:55,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2024-09-21 11:24:55,160 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) [2024-09-21 11:24:55,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 225 transitions. [2024-09-21 11:24:55,161 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 225 transitions. Word has length 220 [2024-09-21 11:24:55,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:55,161 INFO L474 AbstractCegarLoop]: Abstraction has 224 states and 225 transitions. [2024-09-21 11:24:55,161 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.5689655172413792) internal successors, (91), 58 states have internal predecessors, (91), 28 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-21 11:24:55,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:55,161 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 225 transitions. [2024-09-21 11:24:55,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-09-21 11:24:55,162 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:55,162 INFO L216 NwaCegarLoop]: trace histogram [27, 27, 27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:55,175 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-09-21 11:24:55,366 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 [2024-09-21 11:24:55,367 INFO L399 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:55,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:55,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1381044439, now seen corresponding path program 52 times [2024-09-21 11:24:55,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:55,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475395534] [2024-09-21 11:24:55,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:55,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:55,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:55,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:55,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-21 11:24:55,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:55,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-21 11:24:55,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:55,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-21 11:24:55,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:55,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-21 11:24:55,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:55,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-21 11:24:55,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:55,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-21 11:24:55,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:55,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-21 11:24:55,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:55,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-21 11:24:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:55,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-21 11:24:55,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:55,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-21 11:24:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:55,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-21 11:24:55,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:55,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-21 11:24:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:55,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-21 11:24:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:55,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-21 11:24:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:55,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-21 11:24:55,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:55,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-21 11:24:55,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:55,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-21 11:24:55,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:55,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-21 11:24:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:56,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-21 11:24:56,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:56,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-21 11:24:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:56,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-21 11:24:56,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:56,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-21 11:24:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:56,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-21 11:24:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:56,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-21 11:24:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:56,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-21 11:24:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:56,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-21 11:24:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:56,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 403 proven. 1054 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-21 11:24:56,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:56,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475395534] [2024-09-21 11:24:56,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475395534] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:56,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744602912] [2024-09-21 11:24:56,007 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-21 11:24:56,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:56,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:56,009 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) [2024-09-21 11:24:56,010 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-09-21 11:24:56,090 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-21 11:24:56,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:24:56,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-09-21 11:24:56,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:56,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 430 proven. 1027 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-21 11:24:56,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:56,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 430 proven. 1027 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-21 11:24:56,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744602912] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:56,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:56,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 35 [2024-09-21 11:24:56,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395691391] [2024-09-21 11:24:56,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:56,898 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-21 11:24:56,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:56,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-21 11:24:56,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=448, Invalid=742, Unknown=0, NotChecked=0, Total=1190 [2024-09-21 11:24:56,898 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) [2024-09-21 11:24:57,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:57,072 INFO L93 Difference]: Finished difference Result 237 states and 239 transitions. [2024-09-21 11:24:57,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-21 11:24:57,072 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 [2024-09-21 11:24:57,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:57,074 INFO L225 Difference]: With dead ends: 237 [2024-09-21 11:24:57,074 INFO L226 Difference]: Without dead ends: 235 [2024-09-21 11:24:57,074 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 [2024-09-21 11:24:57,074 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:57,075 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 113 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:24:57,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-09-21 11:24:57,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 231. [2024-09-21 11:24:57,087 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) [2024-09-21 11:24:57,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2024-09-21 11:24:57,088 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 221 [2024-09-21 11:24:57,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:57,088 INFO L474 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2024-09-21 11:24:57,088 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) [2024-09-21 11:24:57,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:57,088 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2024-09-21 11:24:57,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-09-21 11:24:57,089 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:57,089 INFO L216 NwaCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:57,105 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2024-09-21 11:24:57,289 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 [2024-09-21 11:24:57,290 INFO L399 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:24:57,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:57,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1692155923, now seen corresponding path program 53 times [2024-09-21 11:24:57,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:24:57,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814138797] [2024-09-21 11:24:57,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:24:57,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:24:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:58,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:24:58,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:58,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-21 11:24:58,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:58,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-21 11:24:58,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:58,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-21 11:24:58,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:58,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-21 11:24:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:58,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-21 11:24:58,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:58,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-21 11:24:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:58,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-21 11:24:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:58,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-21 11:24:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:58,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-21 11:24:58,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:58,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-21 11:24:58,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:58,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-21 11:24:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:58,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-21 11:24:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:58,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-21 11:24:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:58,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-21 11:24:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:58,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-21 11:24:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:58,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-21 11:24:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:58,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-21 11:24:58,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:58,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-21 11:24:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:58,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-21 11:24:58,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:58,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-21 11:24:58,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:58,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-21 11:24:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:58,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-21 11:24:58,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:58,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-21 11:24:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:58,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-21 11:24:58,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:58,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-21 11:24:58,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:58,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-21 11:24:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:58,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-21 11:24:58,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:24:58,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-21 11:24:58,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:24:58,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814138797] [2024-09-21 11:24:58,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814138797] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:24:58,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280679128] [2024-09-21 11:24:58,447 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-21 11:24:58,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:24:58,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:24:58,448 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) [2024-09-21 11:24:58,449 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-09-21 11:24:58,541 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2024-09-21 11:24:58,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:24:58,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-09-21 11:24:58,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:24:58,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-21 11:24:58,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:24:59,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-21 11:24:59,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280679128] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:24:59,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:24:59,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59, 59] total 60 [2024-09-21 11:24:59,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533885178] [2024-09-21 11:24:59,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:24:59,606 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-09-21 11:24:59,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:24:59,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-09-21 11:24:59,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=901, Invalid=2639, Unknown=0, NotChecked=0, Total=3540 [2024-09-21 11:24:59,607 INFO L87 Difference]: Start difference. First operand 231 states and 232 transitions. Second operand has 60 states, 60 states have (on average 1.5666666666666667) internal successors, (94), 60 states have internal predecessors, (94), 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) [2024-09-21 11:24:59,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:24:59,846 INFO L93 Difference]: Finished difference Result 324 states and 353 transitions. [2024-09-21 11:24:59,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-09-21 11:24:59,847 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.5666666666666667) internal successors, (94), 60 states have internal predecessors, (94), 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 228 [2024-09-21 11:24:59,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:24:59,848 INFO L225 Difference]: With dead ends: 324 [2024-09-21 11:24:59,848 INFO L226 Difference]: Without dead ends: 232 [2024-09-21 11:24:59,849 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 456 SyntacticMatches, 56 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2535 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=901, Invalid=2639, Unknown=0, NotChecked=0, Total=3540 [2024-09-21 11:24:59,849 INFO L434 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:24:59,849 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 332 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:24:59,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-09-21 11:24:59,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2024-09-21 11:24:59,861 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) [2024-09-21 11:24:59,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 233 transitions. [2024-09-21 11:24:59,863 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 233 transitions. Word has length 228 [2024-09-21 11:24:59,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:24:59,863 INFO L474 AbstractCegarLoop]: Abstraction has 232 states and 233 transitions. [2024-09-21 11:24:59,863 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.5666666666666667) internal successors, (94), 60 states have internal predecessors, (94), 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) [2024-09-21 11:24:59,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:24:59,863 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 233 transitions. [2024-09-21 11:24:59,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-09-21 11:24:59,864 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:24:59,864 INFO L216 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:24:59,877 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2024-09-21 11:25:00,064 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 [2024-09-21 11:25:00,065 INFO L399 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:25:00,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:00,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1244894087, now seen corresponding path program 54 times [2024-09-21 11:25:00,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:25:00,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788022827] [2024-09-21 11:25:00,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:25:00,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:25:00,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:00,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:25:00,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:00,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-21 11:25:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:00,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-21 11:25:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:00,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-21 11:25:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:00,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-21 11:25:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:00,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-21 11:25:00,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:00,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-21 11:25:00,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:00,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-21 11:25:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:00,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-21 11:25:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:00,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-21 11:25:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:00,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-21 11:25:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:00,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-21 11:25:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:00,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-21 11:25:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:00,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-21 11:25:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:00,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-21 11:25:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:00,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-21 11:25:00,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:00,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-21 11:25:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:00,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-21 11:25:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:00,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-21 11:25:00,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:00,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-21 11:25:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:00,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-21 11:25:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:00,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-21 11:25:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:00,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-21 11:25:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:00,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-21 11:25:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:00,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-21 11:25:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:00,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-21 11:25:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:00,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-21 11:25:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:00,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-21 11:25:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:00,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 432 proven. 1135 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-21 11:25:00,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:25:00,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788022827] [2024-09-21 11:25:00,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788022827] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:25:00,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399897029] [2024-09-21 11:25:00,783 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-21 11:25:00,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:25:00,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:25:00,785 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) [2024-09-21 11:25:00,786 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-09-21 11:25:00,880 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2024-09-21 11:25:00,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:25:00,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-09-21 11:25:00,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:25:01,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 460 proven. 1107 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-21 11:25:01,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:25:01,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 460 proven. 1107 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-21 11:25:01,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399897029] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:25:01,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:25:01,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 36 [2024-09-21 11:25:01,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470209166] [2024-09-21 11:25:01,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:25:01,734 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-21 11:25:01,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:25:01,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-21 11:25:01,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=478, Invalid=782, Unknown=0, NotChecked=0, Total=1260 [2024-09-21 11:25:01,735 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) [2024-09-21 11:25:01,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:25:01,902 INFO L93 Difference]: Finished difference Result 245 states and 247 transitions. [2024-09-21 11:25:01,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-21 11:25:01,902 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 [2024-09-21 11:25:01,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:25:01,904 INFO L225 Difference]: With dead ends: 245 [2024-09-21 11:25:01,904 INFO L226 Difference]: Without dead ends: 243 [2024-09-21 11:25:01,904 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 [2024-09-21 11:25:01,904 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:25:01,904 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 104 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:25:01,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-09-21 11:25:01,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 239. [2024-09-21 11:25:01,917 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) [2024-09-21 11:25:01,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 240 transitions. [2024-09-21 11:25:01,918 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 240 transitions. Word has length 229 [2024-09-21 11:25:01,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:25:01,919 INFO L474 AbstractCegarLoop]: Abstraction has 239 states and 240 transitions. [2024-09-21 11:25:01,919 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) [2024-09-21 11:25:01,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:01,919 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 240 transitions. [2024-09-21 11:25:01,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-09-21 11:25:01,920 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:25:01,920 INFO L216 NwaCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:25:01,937 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2024-09-21 11:25:02,124 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 [2024-09-21 11:25:02,125 INFO L399 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:25:02,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:02,125 INFO L85 PathProgramCache]: Analyzing trace with hash 783968779, now seen corresponding path program 55 times [2024-09-21 11:25:02,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:25:02,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829709503] [2024-09-21 11:25:02,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:25:02,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:25:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:03,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:25:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:03,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-21 11:25:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:03,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-21 11:25:03,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:03,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-21 11:25:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:03,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-21 11:25:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:03,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-21 11:25:03,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:03,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-21 11:25:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:03,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-21 11:25:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:03,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-21 11:25:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:03,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-21 11:25:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:03,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-21 11:25:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:03,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-21 11:25:03,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:03,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-21 11:25:03,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:03,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-21 11:25:03,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:03,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-21 11:25:03,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:03,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-21 11:25:03,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:03,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-21 11:25:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:03,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-21 11:25:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:03,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-21 11:25:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:03,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-21 11:25:03,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:03,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-21 11:25:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:03,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-21 11:25:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:03,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-21 11:25:03,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:03,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-21 11:25:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:03,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-21 11:25:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:03,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-21 11:25:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:03,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-21 11:25:03,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:03,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-21 11:25:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:03,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-21 11:25:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:03,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-21 11:25:03,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:25:03,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829709503] [2024-09-21 11:25:03,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829709503] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:25:03,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374943396] [2024-09-21 11:25:03,320 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-21 11:25:03,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:25:03,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:25:03,321 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) [2024-09-21 11:25:03,322 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-09-21 11:25:03,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:03,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-09-21 11:25:03,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:25:03,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-21 11:25:03,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:25:04,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-21 11:25:04,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374943396] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:25:04,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:25:04,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 62 [2024-09-21 11:25:04,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168435369] [2024-09-21 11:25:04,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:25:04,565 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-09-21 11:25:04,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:25:04,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-09-21 11:25:04,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=962, Invalid=2820, Unknown=0, NotChecked=0, Total=3782 [2024-09-21 11:25:04,566 INFO L87 Difference]: Start difference. First operand 239 states and 240 transitions. Second operand has 62 states, 62 states have (on average 1.564516129032258) internal successors, (97), 62 states have internal predecessors, (97), 30 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-21 11:25:04,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:25:04,873 INFO L93 Difference]: Finished difference Result 335 states and 365 transitions. [2024-09-21 11:25:04,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-09-21 11:25:04,874 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.564516129032258) internal successors, (97), 62 states have internal predecessors, (97), 30 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 236 [2024-09-21 11:25:04,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:25:04,875 INFO L225 Difference]: With dead ends: 335 [2024-09-21 11:25:04,875 INFO L226 Difference]: Without dead ends: 240 [2024-09-21 11:25:04,876 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 472 SyntacticMatches, 58 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2713 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=962, Invalid=2820, Unknown=0, NotChecked=0, Total=3782 [2024-09-21 11:25:04,877 INFO L434 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:25:04,877 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 497 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:25:04,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-09-21 11:25:04,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2024-09-21 11:25:04,891 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) [2024-09-21 11:25:04,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 241 transitions. [2024-09-21 11:25:04,892 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 241 transitions. Word has length 236 [2024-09-21 11:25:04,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:25:04,892 INFO L474 AbstractCegarLoop]: Abstraction has 240 states and 241 transitions. [2024-09-21 11:25:04,892 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.564516129032258) internal successors, (97), 62 states have internal predecessors, (97), 30 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-21 11:25:04,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:04,892 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 241 transitions. [2024-09-21 11:25:04,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-09-21 11:25:04,893 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:25:04,893 INFO L216 NwaCegarLoop]: trace histogram [29, 29, 29, 29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:25:04,909 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2024-09-21 11:25:05,098 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 [2024-09-21 11:25:05,098 INFO L399 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:25:05,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:05,099 INFO L85 PathProgramCache]: Analyzing trace with hash 828623511, now seen corresponding path program 56 times [2024-09-21 11:25:05,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:25:05,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145654977] [2024-09-21 11:25:05,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:25:05,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:25:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:05,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:25:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:05,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-21 11:25:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:05,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-21 11:25:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:05,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-21 11:25:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:05,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-21 11:25:05,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:05,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-21 11:25:05,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:05,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-21 11:25:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:05,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-21 11:25:05,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:05,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-21 11:25:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:05,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-21 11:25:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:05,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-21 11:25:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:05,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-21 11:25:05,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:05,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-21 11:25:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:05,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-21 11:25:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:05,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-21 11:25:05,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:05,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-21 11:25:05,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:05,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-21 11:25:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:05,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-21 11:25:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:05,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-21 11:25:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:05,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-21 11:25:05,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:05,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-21 11:25:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:05,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-21 11:25:05,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:05,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-21 11:25:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:05,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-21 11:25:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:05,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-21 11:25:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:05,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-21 11:25:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:05,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-21 11:25:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:05,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-21 11:25:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:05,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-21 11:25:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:05,872 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 462 proven. 1219 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-21 11:25:05,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:25:05,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145654977] [2024-09-21 11:25:05,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145654977] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:25:05,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009972311] [2024-09-21 11:25:05,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 11:25:05,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:25:05,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:25:05,874 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) [2024-09-21 11:25:05,874 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-09-21 11:25:05,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 11:25:05,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:25:05,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-09-21 11:25:05,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:25:06,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 491 proven. 1190 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-21 11:25:06,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:25:06,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 491 proven. 1190 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-21 11:25:06,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009972311] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:25:06,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:25:06,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 37 [2024-09-21 11:25:06,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625966068] [2024-09-21 11:25:06,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:25:06,879 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-21 11:25:06,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:25:06,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-21 11:25:06,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=509, Invalid=823, Unknown=0, NotChecked=0, Total=1332 [2024-09-21 11:25:06,880 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) [2024-09-21 11:25:07,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:25:07,050 INFO L93 Difference]: Finished difference Result 253 states and 255 transitions. [2024-09-21 11:25:07,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-21 11:25:07,050 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 [2024-09-21 11:25:07,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:25:07,051 INFO L225 Difference]: With dead ends: 253 [2024-09-21 11:25:07,052 INFO L226 Difference]: Without dead ends: 251 [2024-09-21 11:25:07,052 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 [2024-09-21 11:25:07,052 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:25:07,052 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 91 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:25:07,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-09-21 11:25:07,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 247. [2024-09-21 11:25:07,065 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) [2024-09-21 11:25:07,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 248 transitions. [2024-09-21 11:25:07,067 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 248 transitions. Word has length 237 [2024-09-21 11:25:07,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:25:07,067 INFO L474 AbstractCegarLoop]: Abstraction has 247 states and 248 transitions. [2024-09-21 11:25:07,067 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) [2024-09-21 11:25:07,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:07,067 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 248 transitions. [2024-09-21 11:25:07,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-09-21 11:25:07,068 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:25:07,068 INFO L216 NwaCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:25:07,083 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-09-21 11:25:07,272 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 [2024-09-21 11:25:07,272 INFO L399 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:25:07,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:07,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1507815891, now seen corresponding path program 57 times [2024-09-21 11:25:07,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:25:07,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111936753] [2024-09-21 11:25:07,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:25:07,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:25:07,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:08,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:25:08,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:08,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-21 11:25:08,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:08,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-21 11:25:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:08,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-21 11:25:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:08,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-21 11:25:08,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:08,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-21 11:25:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:08,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-21 11:25:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:08,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-21 11:25:08,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:08,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-21 11:25:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:08,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-21 11:25:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:08,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-21 11:25:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:08,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-21 11:25:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:08,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-21 11:25:08,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:08,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-21 11:25:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:08,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-21 11:25:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:08,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-21 11:25:08,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:08,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-21 11:25:08,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:08,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-21 11:25:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:08,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-21 11:25:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:08,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-21 11:25:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:08,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-21 11:25:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:08,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-21 11:25:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:08,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-21 11:25:08,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:08,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-21 11:25:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:08,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-21 11:25:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:08,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-21 11:25:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:08,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-21 11:25:08,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:08,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-21 11:25:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:08,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-21 11:25:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:08,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-21 11:25:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:08,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-21 11:25:08,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:25:08,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111936753] [2024-09-21 11:25:08,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111936753] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:25:08,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002104311] [2024-09-21 11:25:08,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-21 11:25:08,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:25:08,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:25:08,627 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) [2024-09-21 11:25:08,628 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-09-21 11:25:08,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2024-09-21 11:25:08,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:25:08,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-09-21 11:25:08,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:25:08,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-21 11:25:08,858 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:25:09,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-21 11:25:09,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002104311] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:25:09,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:25:09,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 64 [2024-09-21 11:25:09,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537706884] [2024-09-21 11:25:09,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:25:09,936 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-09-21 11:25:09,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:25:09,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-09-21 11:25:09,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1025, Invalid=3007, Unknown=0, NotChecked=0, Total=4032 [2024-09-21 11:25:09,938 INFO L87 Difference]: Start difference. First operand 247 states and 248 transitions. Second operand has 64 states, 64 states have (on average 1.5625) internal successors, (100), 64 states have internal predecessors, (100), 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) [2024-09-21 11:25:10,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:25:10,242 INFO L93 Difference]: Finished difference Result 346 states and 377 transitions. [2024-09-21 11:25:10,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-09-21 11:25:10,242 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.5625) internal successors, (100), 64 states have internal predecessors, (100), 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 244 [2024-09-21 11:25:10,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:25:10,244 INFO L225 Difference]: With dead ends: 346 [2024-09-21 11:25:10,244 INFO L226 Difference]: Without dead ends: 248 [2024-09-21 11:25:10,244 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 488 SyntacticMatches, 60 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2897 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1025, Invalid=3007, Unknown=0, NotChecked=0, Total=4032 [2024-09-21 11:25:10,244 INFO L434 NwaCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:25:10,244 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 380 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:25:10,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-09-21 11:25:10,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2024-09-21 11:25:10,259 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) [2024-09-21 11:25:10,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 249 transitions. [2024-09-21 11:25:10,261 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 249 transitions. Word has length 244 [2024-09-21 11:25:10,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:25:10,261 INFO L474 AbstractCegarLoop]: Abstraction has 248 states and 249 transitions. [2024-09-21 11:25:10,261 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.5625) internal successors, (100), 64 states have internal predecessors, (100), 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) [2024-09-21 11:25:10,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:10,262 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 249 transitions. [2024-09-21 11:25:10,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-09-21 11:25:10,263 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:25:10,263 INFO L216 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:25:10,281 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2024-09-21 11:25:10,467 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 [2024-09-21 11:25:10,468 INFO L399 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:25:10,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:10,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1361665351, now seen corresponding path program 58 times [2024-09-21 11:25:10,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:25:10,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928847937] [2024-09-21 11:25:10,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:25:10,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:25:10,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:11,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:25:11,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:11,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-21 11:25:11,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:11,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-21 11:25:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:11,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-21 11:25:11,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:11,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-21 11:25:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:11,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-21 11:25:11,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:11,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-21 11:25:11,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:11,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-21 11:25:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:11,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-21 11:25:11,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:11,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-21 11:25:11,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:11,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-21 11:25:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:11,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-21 11:25:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:11,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-21 11:25:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:11,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-21 11:25:11,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:11,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-21 11:25:11,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:11,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-21 11:25:11,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:11,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-21 11:25:11,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:11,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-21 11:25:11,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:11,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-21 11:25:11,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:11,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-21 11:25:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:11,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-21 11:25:11,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:11,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-21 11:25:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:11,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-21 11:25:11,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:11,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-21 11:25:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:11,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-21 11:25:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:11,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-21 11:25:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:11,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-21 11:25:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:11,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-21 11:25:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:11,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-21 11:25:11,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:11,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-21 11:25:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:11,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 493 proven. 1306 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-21 11:25:11,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:25:11,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928847937] [2024-09-21 11:25:11,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928847937] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:25:11,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80918618] [2024-09-21 11:25:11,265 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-21 11:25:11,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:25:11,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:25:11,266 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) [2024-09-21 11:25:11,267 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-09-21 11:25:11,352 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-21 11:25:11,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:25:11,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-09-21 11:25:11,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:25:11,502 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 523 proven. 1276 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-21 11:25:11,502 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:25:12,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 523 proven. 1276 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-21 11:25:12,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80918618] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:25:12,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:25:12,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 38 [2024-09-21 11:25:12,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903296573] [2024-09-21 11:25:12,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:25:12,339 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-21 11:25:12,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:25:12,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-21 11:25:12,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=541, Invalid=865, Unknown=0, NotChecked=0, Total=1406 [2024-09-21 11:25:12,340 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) [2024-09-21 11:25:12,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:25:12,539 INFO L93 Difference]: Finished difference Result 261 states and 263 transitions. [2024-09-21 11:25:12,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-09-21 11:25:12,539 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 [2024-09-21 11:25:12,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:25:12,544 INFO L225 Difference]: With dead ends: 261 [2024-09-21 11:25:12,544 INFO L226 Difference]: Without dead ends: 259 [2024-09-21 11:25:12,545 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 [2024-09-21 11:25:12,545 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:25:12,545 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 105 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:25:12,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-09-21 11:25:12,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 255. [2024-09-21 11:25:12,574 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) [2024-09-21 11:25:12,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 256 transitions. [2024-09-21 11:25:12,575 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 256 transitions. Word has length 245 [2024-09-21 11:25:12,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:25:12,579 INFO L474 AbstractCegarLoop]: Abstraction has 255 states and 256 transitions. [2024-09-21 11:25:12,579 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) [2024-09-21 11:25:12,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:12,579 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 256 transitions. [2024-09-21 11:25:12,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-09-21 11:25:12,580 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:25:12,580 INFO L216 NwaCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:25:12,606 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2024-09-21 11:25:12,780 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 [2024-09-21 11:25:12,781 INFO L399 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:25:12,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:12,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1311943627, now seen corresponding path program 59 times [2024-09-21 11:25:12,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:25:12,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886996235] [2024-09-21 11:25:12,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:25:12,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:25:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:14,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:25:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:14,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-21 11:25:14,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:14,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-21 11:25:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:14,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-21 11:25:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:14,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-21 11:25:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:14,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-21 11:25:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:14,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-21 11:25:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:14,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-21 11:25:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:14,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-21 11:25:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:14,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-21 11:25:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:14,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-21 11:25:14,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:14,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-21 11:25:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:14,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-21 11:25:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:14,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-21 11:25:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:14,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-21 11:25:14,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:14,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-21 11:25:14,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:14,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-21 11:25:14,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:14,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-21 11:25:14,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:14,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-21 11:25:14,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:14,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-21 11:25:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:14,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-21 11:25:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:14,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-21 11:25:14,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:14,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-21 11:25:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:14,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-21 11:25:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:14,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-21 11:25:14,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:14,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-21 11:25:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:14,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-21 11:25:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:14,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-21 11:25:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:14,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-21 11:25:14,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:14,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-21 11:25:14,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:14,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-21 11:25:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:14,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-21 11:25:14,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:25:14,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886996235] [2024-09-21 11:25:14,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886996235] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:25:14,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448579707] [2024-09-21 11:25:14,191 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-21 11:25:14,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:25:14,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:25:14,194 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) [2024-09-21 11:25:14,198 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-09-21 11:25:14,310 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2024-09-21 11:25:14,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:25:14,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-09-21 11:25:14,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:25:14,443 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-21 11:25:14,443 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:25:15,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-21 11:25:15,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448579707] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:25:15,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:25:15,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 66 [2024-09-21 11:25:15,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680928286] [2024-09-21 11:25:15,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:25:15,708 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-09-21 11:25:15,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:25:15,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-09-21 11:25:15,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1090, Invalid=3200, Unknown=0, NotChecked=0, Total=4290 [2024-09-21 11:25:15,709 INFO L87 Difference]: Start difference. First operand 255 states and 256 transitions. Second operand has 66 states, 66 states have (on average 1.5606060606060606) internal successors, (103), 66 states have internal predecessors, (103), 32 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-21 11:25:16,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:25:16,070 INFO L93 Difference]: Finished difference Result 357 states and 389 transitions. [2024-09-21 11:25:16,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-09-21 11:25:16,070 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.5606060606060606) internal successors, (103), 66 states have internal predecessors, (103), 32 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Word has length 252 [2024-09-21 11:25:16,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:25:16,072 INFO L225 Difference]: With dead ends: 357 [2024-09-21 11:25:16,072 INFO L226 Difference]: Without dead ends: 256 [2024-09-21 11:25:16,072 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 504 SyntacticMatches, 62 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3087 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1090, Invalid=3200, Unknown=0, NotChecked=0, Total=4290 [2024-09-21 11:25:16,073 INFO L434 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-21 11:25:16,073 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 498 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-21 11:25:16,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-09-21 11:25:16,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2024-09-21 11:25:16,087 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) [2024-09-21 11:25:16,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 257 transitions. [2024-09-21 11:25:16,088 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 257 transitions. Word has length 252 [2024-09-21 11:25:16,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:25:16,088 INFO L474 AbstractCegarLoop]: Abstraction has 256 states and 257 transitions. [2024-09-21 11:25:16,089 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.5606060606060606) internal successors, (103), 66 states have internal predecessors, (103), 32 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-21 11:25:16,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:16,089 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 257 transitions. [2024-09-21 11:25:16,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-09-21 11:25:16,090 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:25:16,090 INFO L216 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:25:16,104 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2024-09-21 11:25:16,293 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 [2024-09-21 11:25:16,294 INFO L399 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:25:16,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:16,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1358859177, now seen corresponding path program 60 times [2024-09-21 11:25:16,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:25:16,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669961493] [2024-09-21 11:25:16,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:25:16,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:25:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:17,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:25:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:17,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-21 11:25:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:17,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-21 11:25:17,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:17,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-21 11:25:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:17,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-21 11:25:17,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:17,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-21 11:25:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:17,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-21 11:25:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:17,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-21 11:25:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:17,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-21 11:25:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:17,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-21 11:25:17,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:17,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-21 11:25:17,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:17,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-21 11:25:17,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:17,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-21 11:25:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:17,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-21 11:25:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:17,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-21 11:25:17,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:17,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-21 11:25:17,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:17,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-21 11:25:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:17,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-21 11:25:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:17,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-21 11:25:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:17,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-21 11:25:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:17,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-21 11:25:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:17,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-21 11:25:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:17,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-21 11:25:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:17,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-21 11:25:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:17,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-21 11:25:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:17,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-21 11:25:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:17,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-21 11:25:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:17,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-21 11:25:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:17,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-21 11:25:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:17,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-21 11:25:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:17,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-21 11:25:17,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:17,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 525 proven. 1396 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-21 11:25:17,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:25:17,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669961493] [2024-09-21 11:25:17,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669961493] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:25:17,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247046703] [2024-09-21 11:25:17,129 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-21 11:25:17,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:25:17,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:25:17,130 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) [2024-09-21 11:25:17,131 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-09-21 11:25:17,249 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2024-09-21 11:25:17,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:25:17,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-09-21 11:25:17,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:25:17,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 556 proven. 1365 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-21 11:25:17,385 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:25:18,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 556 proven. 1365 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-21 11:25:18,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247046703] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:25:18,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:25:18,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 39 [2024-09-21 11:25:18,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102397922] [2024-09-21 11:25:18,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:25:18,073 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-09-21 11:25:18,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:25:18,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-09-21 11:25:18,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=574, Invalid=908, Unknown=0, NotChecked=0, Total=1482 [2024-09-21 11:25:18,074 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) [2024-09-21 11:25:18,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:25:18,213 INFO L93 Difference]: Finished difference Result 269 states and 271 transitions. [2024-09-21 11:25:18,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-21 11:25:18,214 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 [2024-09-21 11:25:18,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:25:18,215 INFO L225 Difference]: With dead ends: 269 [2024-09-21 11:25:18,215 INFO L226 Difference]: Without dead ends: 267 [2024-09-21 11:25:18,215 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 534 SyntacticMatches, 62 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1327 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=580, Invalid=980, Unknown=0, NotChecked=0, Total=1560 [2024-09-21 11:25:18,215 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:25:18,216 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 96 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:25:18,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-09-21 11:25:18,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 263. [2024-09-21 11:25:18,230 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) [2024-09-21 11:25:18,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 264 transitions. [2024-09-21 11:25:18,231 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 264 transitions. Word has length 253 [2024-09-21 11:25:18,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:25:18,232 INFO L474 AbstractCegarLoop]: Abstraction has 263 states and 264 transitions. [2024-09-21 11:25:18,232 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) [2024-09-21 11:25:18,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:18,232 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 264 transitions. [2024-09-21 11:25:18,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-09-21 11:25:18,233 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:25:18,233 INFO L216 NwaCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:25:18,247 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2024-09-21 11:25:18,437 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 [2024-09-21 11:25:18,438 INFO L399 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:25:18,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:18,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1654363027, now seen corresponding path program 61 times [2024-09-21 11:25:18,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:25:18,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450768680] [2024-09-21 11:25:18,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:25:18,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:25:18,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:19,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:25:19,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:19,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-21 11:25:19,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:19,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-21 11:25:19,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:19,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-21 11:25:19,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:19,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-21 11:25:19,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:19,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-21 11:25:19,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:19,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-21 11:25:19,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:19,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-21 11:25:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:19,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-21 11:25:19,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:19,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-21 11:25:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:19,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-21 11:25:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:19,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-21 11:25:19,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:19,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-21 11:25:19,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:19,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-21 11:25:19,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:19,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-21 11:25:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:19,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-21 11:25:19,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:19,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-21 11:25:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:19,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-21 11:25:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:19,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-21 11:25:19,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:19,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-21 11:25:19,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:19,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-21 11:25:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:19,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-21 11:25:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:19,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-21 11:25:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:19,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-21 11:25:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:19,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-21 11:25:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:19,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-21 11:25:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:19,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-21 11:25:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:19,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-21 11:25:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:19,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-21 11:25:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:19,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-21 11:25:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:19,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-21 11:25:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:19,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-21 11:25:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:19,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-21 11:25:19,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:25:19,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450768680] [2024-09-21 11:25:19,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450768680] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:25:19,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845591353] [2024-09-21 11:25:19,867 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-21 11:25:19,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:25:19,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:25:19,868 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) [2024-09-21 11:25:19,870 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-09-21 11:25:19,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:19,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-09-21 11:25:19,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:25:20,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-21 11:25:20,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:25:21,333 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-21 11:25:21,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845591353] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:25:21,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:25:21,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67, 67] total 68 [2024-09-21 11:25:21,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107614848] [2024-09-21 11:25:21,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:25:21,334 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-09-21 11:25:21,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:25:21,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-09-21 11:25:21,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1157, Invalid=3399, Unknown=0, NotChecked=0, Total=4556 [2024-09-21 11:25:21,335 INFO L87 Difference]: Start difference. First operand 263 states and 264 transitions. Second operand has 68 states, 68 states have (on average 1.5588235294117647) internal successors, (106), 68 states have internal predecessors, (106), 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) [2024-09-21 11:25:21,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:25:21,667 INFO L93 Difference]: Finished difference Result 368 states and 401 transitions. [2024-09-21 11:25:21,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-09-21 11:25:21,667 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.5588235294117647) internal successors, (106), 68 states have internal predecessors, (106), 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 260 [2024-09-21 11:25:21,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:25:21,669 INFO L225 Difference]: With dead ends: 368 [2024-09-21 11:25:21,669 INFO L226 Difference]: Without dead ends: 264 [2024-09-21 11:25:21,669 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 520 SyntacticMatches, 64 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3283 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1157, Invalid=3399, Unknown=0, NotChecked=0, Total=4556 [2024-09-21 11:25:21,670 INFO L434 NwaCegarLoop]: 71 mSDtfsCounter, 0 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-21 11:25:21,673 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 502 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-21 11:25:21,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-09-21 11:25:21,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2024-09-21 11:25:21,690 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) [2024-09-21 11:25:21,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 265 transitions. [2024-09-21 11:25:21,691 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 265 transitions. Word has length 260 [2024-09-21 11:25:21,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:25:21,691 INFO L474 AbstractCegarLoop]: Abstraction has 264 states and 265 transitions. [2024-09-21 11:25:21,691 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.5588235294117647) internal successors, (106), 68 states have internal predecessors, (106), 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) [2024-09-21 11:25:21,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:21,692 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 265 transitions. [2024-09-21 11:25:21,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-09-21 11:25:21,693 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:25:21,694 INFO L216 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:25:21,710 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2024-09-21 11:25:21,898 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 [2024-09-21 11:25:21,899 INFO L399 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:25:21,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:21,899 INFO L85 PathProgramCache]: Analyzing trace with hash -598218503, now seen corresponding path program 62 times [2024-09-21 11:25:21,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:25:21,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545941506] [2024-09-21 11:25:21,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:25:21,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:25:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:22,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:25:22,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:22,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-21 11:25:22,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:22,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-21 11:25:22,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:22,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-21 11:25:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:22,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-21 11:25:22,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:22,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-21 11:25:22,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:22,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-21 11:25:22,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:22,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-21 11:25:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:22,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-21 11:25:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:22,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-21 11:25:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:22,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-21 11:25:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:22,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-21 11:25:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:22,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-21 11:25:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:22,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-21 11:25:22,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:22,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-21 11:25:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:22,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-21 11:25:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:22,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-21 11:25:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:22,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-21 11:25:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:22,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-21 11:25:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:22,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-21 11:25:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:22,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-21 11:25:22,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:22,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-21 11:25:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:22,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-21 11:25:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:22,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-21 11:25:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:22,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-21 11:25:22,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:22,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-21 11:25:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:22,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-21 11:25:22,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:22,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-21 11:25:22,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:22,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-21 11:25:22,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:22,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-21 11:25:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:22,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-21 11:25:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:22,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-21 11:25:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:22,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 558 proven. 1489 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-21 11:25:22,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:25:22,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545941506] [2024-09-21 11:25:22,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545941506] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:25:22,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351660994] [2024-09-21 11:25:22,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 11:25:22,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:25:22,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:25:22,688 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) [2024-09-21 11:25:22,689 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-09-21 11:25:22,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 11:25:22,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:25:22,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-09-21 11:25:22,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:25:22,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 590 proven. 1457 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-21 11:25:22,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:25:23,926 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 590 proven. 1457 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-21 11:25:23,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351660994] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:25:23,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:25:23,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 40 [2024-09-21 11:25:23,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103281208] [2024-09-21 11:25:23,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:25:23,927 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-21 11:25:23,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:25:23,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-21 11:25:23,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=608, Invalid=952, Unknown=0, NotChecked=0, Total=1560 [2024-09-21 11:25:23,928 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) [2024-09-21 11:25:24,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:25:24,104 INFO L93 Difference]: Finished difference Result 277 states and 279 transitions. [2024-09-21 11:25:24,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-21 11:25:24,105 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 [2024-09-21 11:25:24,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:25:24,106 INFO L225 Difference]: With dead ends: 277 [2024-09-21 11:25:24,106 INFO L226 Difference]: Without dead ends: 275 [2024-09-21 11:25:24,106 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 [2024-09-21 11:25:24,106 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:25:24,107 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 90 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:25:24,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-09-21 11:25:24,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 271. [2024-09-21 11:25:24,122 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) [2024-09-21 11:25:24,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 272 transitions. [2024-09-21 11:25:24,123 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 272 transitions. Word has length 261 [2024-09-21 11:25:24,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:25:24,123 INFO L474 AbstractCegarLoop]: Abstraction has 271 states and 272 transitions. [2024-09-21 11:25:24,123 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) [2024-09-21 11:25:24,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:24,124 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 272 transitions. [2024-09-21 11:25:24,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-09-21 11:25:24,124 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:25:24,124 INFO L216 NwaCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:25:24,137 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2024-09-21 11:25:24,328 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 [2024-09-21 11:25:24,329 INFO L399 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:25:24,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:24,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1474175605, now seen corresponding path program 63 times [2024-09-21 11:25:24,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:25:24,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174010242] [2024-09-21 11:25:24,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:25:24,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:25:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:25,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:25:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:25,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-21 11:25:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:25,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-21 11:25:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:25,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-21 11:25:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:25,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-21 11:25:25,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:25,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-21 11:25:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:25,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-21 11:25:25,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:25,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-21 11:25:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:25,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-21 11:25:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:25,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-21 11:25:25,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:25,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-21 11:25:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:25,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-21 11:25:25,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:25,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-21 11:25:25,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:25,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-21 11:25:25,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:25,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-21 11:25:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:25,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-21 11:25:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:25,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-21 11:25:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:25,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-21 11:25:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:25,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-21 11:25:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:25,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-21 11:25:25,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:25,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-21 11:25:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:25,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-21 11:25:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:25,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-21 11:25:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:25,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-21 11:25:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:25,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-21 11:25:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:25,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-21 11:25:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:25,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-21 11:25:25,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:25,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-21 11:25:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:25,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-21 11:25:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:25,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-21 11:25:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:25,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-21 11:25:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:25,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-21 11:25:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:25,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-21 11:25:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:25,992 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-21 11:25:25,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:25:25,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174010242] [2024-09-21 11:25:25,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174010242] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:25:25,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098972468] [2024-09-21 11:25:25,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-21 11:25:25,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:25:25,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:25:25,994 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) [2024-09-21 11:25:25,995 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-09-21 11:25:26,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2024-09-21 11:25:26,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:25:26,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-09-21 11:25:26,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:25:26,240 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-21 11:25:26,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:25:27,497 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-21 11:25:27,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098972468] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:25:27,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:25:27,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69, 69] total 70 [2024-09-21 11:25:27,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901094779] [2024-09-21 11:25:27,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:25:27,498 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-09-21 11:25:27,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:25:27,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-09-21 11:25:27,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1226, Invalid=3604, Unknown=0, NotChecked=0, Total=4830 [2024-09-21 11:25:27,499 INFO L87 Difference]: Start difference. First operand 271 states and 272 transitions. Second operand has 70 states, 70 states have (on average 1.5571428571428572) internal successors, (109), 70 states have internal predecessors, (109), 34 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-21 11:25:27,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:25:27,900 INFO L93 Difference]: Finished difference Result 379 states and 413 transitions. [2024-09-21 11:25:27,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-09-21 11:25:27,901 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.5571428571428572) internal successors, (109), 70 states have internal predecessors, (109), 34 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Word has length 268 [2024-09-21 11:25:27,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:25:27,902 INFO L225 Difference]: With dead ends: 379 [2024-09-21 11:25:27,902 INFO L226 Difference]: Without dead ends: 272 [2024-09-21 11:25:27,902 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 536 SyntacticMatches, 66 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3485 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1226, Invalid=3604, Unknown=0, NotChecked=0, Total=4830 [2024-09-21 11:25:27,903 INFO L434 NwaCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-21 11:25:27,903 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 742 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-21 11:25:27,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-09-21 11:25:27,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2024-09-21 11:25:27,918 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) [2024-09-21 11:25:27,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 273 transitions. [2024-09-21 11:25:27,919 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 273 transitions. Word has length 268 [2024-09-21 11:25:27,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:25:27,919 INFO L474 AbstractCegarLoop]: Abstraction has 272 states and 273 transitions. [2024-09-21 11:25:27,919 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.5571428571428572) internal successors, (109), 70 states have internal predecessors, (109), 34 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-21 11:25:27,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:27,920 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 273 transitions. [2024-09-21 11:25:27,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-09-21 11:25:27,921 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:25:27,921 INFO L216 NwaCegarLoop]: trace histogram [33, 33, 33, 33, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:25:27,933 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2024-09-21 11:25:28,124 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 [2024-09-21 11:25:28,124 INFO L399 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:25:28,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:28,124 INFO L85 PathProgramCache]: Analyzing trace with hash 2135297559, now seen corresponding path program 64 times [2024-09-21 11:25:28,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:25:28,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235112353] [2024-09-21 11:25:28,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:25:28,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:25:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:29,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:25:29,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:29,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-21 11:25:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:29,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-21 11:25:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:29,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-21 11:25:29,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:29,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-21 11:25:29,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:29,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-21 11:25:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:29,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-21 11:25:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:29,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-21 11:25:29,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:29,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-21 11:25:29,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:29,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-21 11:25:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:29,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-21 11:25:29,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:29,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-21 11:25:29,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:29,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-21 11:25:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:29,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-21 11:25:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:29,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-21 11:25:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:29,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-21 11:25:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:29,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-21 11:25:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:29,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-21 11:25:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:29,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-21 11:25:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:29,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-21 11:25:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:29,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-21 11:25:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:29,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-21 11:25:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:29,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-21 11:25:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:29,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-21 11:25:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:29,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-21 11:25:29,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:29,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-21 11:25:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:29,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-21 11:25:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:29,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-21 11:25:29,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:29,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-21 11:25:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:29,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-21 11:25:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:29,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-21 11:25:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:29,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-21 11:25:29,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:29,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-21 11:25:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:29,067 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 592 proven. 1585 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-21 11:25:29,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:25:29,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235112353] [2024-09-21 11:25:29,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235112353] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:25:29,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637786921] [2024-09-21 11:25:29,067 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-21 11:25:29,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:25:29,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:25:29,069 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) [2024-09-21 11:25:29,072 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-09-21 11:25:29,161 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-21 11:25:29,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:25:29,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-09-21 11:25:29,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:25:29,330 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 625 proven. 1552 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-21 11:25:29,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:25:30,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 625 proven. 1552 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-21 11:25:30,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637786921] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:25:30,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:25:30,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 41 [2024-09-21 11:25:30,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585666121] [2024-09-21 11:25:30,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:25:30,359 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-21 11:25:30,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:25:30,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-21 11:25:30,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=643, Invalid=997, Unknown=0, NotChecked=0, Total=1640 [2024-09-21 11:25:30,360 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) [2024-09-21 11:25:30,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:25:30,618 INFO L93 Difference]: Finished difference Result 285 states and 287 transitions. [2024-09-21 11:25:30,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-21 11:25:30,618 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 [2024-09-21 11:25:30,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:25:30,620 INFO L225 Difference]: With dead ends: 285 [2024-09-21 11:25:30,620 INFO L226 Difference]: Without dead ends: 283 [2024-09-21 11:25:30,621 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 568 SyntacticMatches, 66 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=649, Invalid=1073, Unknown=0, NotChecked=0, Total=1722 [2024-09-21 11:25:30,621 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:25:30,621 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 112 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:25:30,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-09-21 11:25:30,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 279. [2024-09-21 11:25:30,647 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) [2024-09-21 11:25:30,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 280 transitions. [2024-09-21 11:25:30,648 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 280 transitions. Word has length 269 [2024-09-21 11:25:30,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:25:30,649 INFO L474 AbstractCegarLoop]: Abstraction has 279 states and 280 transitions. [2024-09-21 11:25:30,649 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) [2024-09-21 11:25:30,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:30,649 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 280 transitions. [2024-09-21 11:25:30,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-09-21 11:25:30,650 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:25:30,650 INFO L216 NwaCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:25:30,668 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2024-09-21 11:25:30,854 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 [2024-09-21 11:25:30,855 INFO L399 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:25:30,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:30,855 INFO L85 PathProgramCache]: Analyzing trace with hash 894655149, now seen corresponding path program 65 times [2024-09-21 11:25:30,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:25:30,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028273027] [2024-09-21 11:25:30,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:25:30,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:25:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:32,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:25:32,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:32,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-21 11:25:32,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:32,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-21 11:25:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:32,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-21 11:25:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:32,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-21 11:25:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:32,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-21 11:25:32,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:32,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-21 11:25:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:32,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-21 11:25:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:32,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-21 11:25:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:32,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-21 11:25:32,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:32,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-21 11:25:32,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:32,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-21 11:25:32,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:32,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-21 11:25:32,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:32,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-21 11:25:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:32,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-21 11:25:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:32,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-21 11:25:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:32,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-21 11:25:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:32,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-21 11:25:32,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:32,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-21 11:25:32,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:32,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-21 11:25:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:32,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-21 11:25:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:32,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-21 11:25:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:32,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-21 11:25:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:32,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-21 11:25:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:32,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-21 11:25:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:32,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-21 11:25:32,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:32,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-21 11:25:32,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:32,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-21 11:25:32,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:32,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-21 11:25:32,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:32,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-21 11:25:32,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:32,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-21 11:25:32,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:32,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-21 11:25:32,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:32,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-21 11:25:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:32,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-21 11:25:32,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:32,535 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-21 11:25:32,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:25:32,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028273027] [2024-09-21 11:25:32,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028273027] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:25:32,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946961337] [2024-09-21 11:25:32,535 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-21 11:25:32,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:25:32,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:25:32,536 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) [2024-09-21 11:25:32,538 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-09-21 11:25:32,655 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2024-09-21 11:25:32,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:25:32,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-09-21 11:25:32,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:25:32,790 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-21 11:25:32,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:25:34,145 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-21 11:25:34,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946961337] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:25:34,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:25:34,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71, 71] total 72 [2024-09-21 11:25:34,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245619520] [2024-09-21 11:25:34,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:25:34,146 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-09-21 11:25:34,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:25:34,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-09-21 11:25:34,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1297, Invalid=3815, Unknown=0, NotChecked=0, Total=5112 [2024-09-21 11:25:34,147 INFO L87 Difference]: Start difference. First operand 279 states and 280 transitions. Second operand has 72 states, 72 states have (on average 1.5555555555555556) internal successors, (112), 72 states have internal predecessors, (112), 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) [2024-09-21 11:25:34,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:25:34,504 INFO L93 Difference]: Finished difference Result 390 states and 425 transitions. [2024-09-21 11:25:34,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-09-21 11:25:34,504 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.5555555555555556) internal successors, (112), 72 states have internal predecessors, (112), 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 276 [2024-09-21 11:25:34,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:25:34,505 INFO L225 Difference]: With dead ends: 390 [2024-09-21 11:25:34,506 INFO L226 Difference]: Without dead ends: 280 [2024-09-21 11:25:34,506 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 690 GetRequests, 552 SyntacticMatches, 68 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3693 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1297, Invalid=3815, Unknown=0, NotChecked=0, Total=5112 [2024-09-21 11:25:34,507 INFO L434 NwaCegarLoop]: 75 mSDtfsCounter, 0 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-21 11:25:34,507 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 614 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-21 11:25:34,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-09-21 11:25:34,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2024-09-21 11:25:34,539 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) [2024-09-21 11:25:34,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 281 transitions. [2024-09-21 11:25:34,541 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 281 transitions. Word has length 276 [2024-09-21 11:25:34,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:25:34,544 INFO L474 AbstractCegarLoop]: Abstraction has 280 states and 281 transitions. [2024-09-21 11:25:34,544 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 1.5555555555555556) internal successors, (112), 72 states have internal predecessors, (112), 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) [2024-09-21 11:25:34,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:34,544 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 281 transitions. [2024-09-21 11:25:34,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-09-21 11:25:34,545 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:25:34,545 INFO L216 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:25:34,558 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2024-09-21 11:25:34,746 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 [2024-09-21 11:25:34,746 INFO L399 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:25:34,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:34,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1833681095, now seen corresponding path program 66 times [2024-09-21 11:25:34,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:25:34,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71183445] [2024-09-21 11:25:34,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:25:34,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:25:34,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:35,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:25:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:35,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-21 11:25:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:35,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-21 11:25:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:35,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-21 11:25:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:35,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-21 11:25:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:35,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-21 11:25:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:35,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-21 11:25:35,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:35,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-21 11:25:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:35,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-21 11:25:35,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:35,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-21 11:25:35,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:35,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-21 11:25:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:35,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-21 11:25:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:35,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-21 11:25:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:35,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-21 11:25:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:35,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-21 11:25:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:35,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-21 11:25:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:35,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-21 11:25:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:35,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-21 11:25:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:35,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-21 11:25:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:35,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-21 11:25:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:35,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-21 11:25:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:35,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-21 11:25:35,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:35,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-21 11:25:35,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:35,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-21 11:25:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:35,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-21 11:25:35,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:35,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-21 11:25:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:35,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-21 11:25:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:35,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-21 11:25:35,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:35,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-21 11:25:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:35,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-21 11:25:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:35,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-21 11:25:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:35,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-21 11:25:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:35,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-21 11:25:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:35,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-21 11:25:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:35,787 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 627 proven. 1684 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-21 11:25:35,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:25:35,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71183445] [2024-09-21 11:25:35,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71183445] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:25:35,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010321984] [2024-09-21 11:25:35,787 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-21 11:25:35,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:25:35,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:25:35,789 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) [2024-09-21 11:25:35,790 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2024-09-21 11:25:35,910 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2024-09-21 11:25:35,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:25:35,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-09-21 11:25:35,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:25:36,118 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 661 proven. 1650 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-21 11:25:36,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:25:36,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 661 proven. 1650 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-21 11:25:36,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010321984] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:25:36,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:25:36,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 42 [2024-09-21 11:25:36,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978597418] [2024-09-21 11:25:36,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:25:36,989 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-21 11:25:36,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:25:36,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-21 11:25:36,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=679, Invalid=1043, Unknown=0, NotChecked=0, Total=1722 [2024-09-21 11:25:36,994 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) [2024-09-21 11:25:37,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:25:37,148 INFO L93 Difference]: Finished difference Result 293 states and 295 transitions. [2024-09-21 11:25:37,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-09-21 11:25:37,148 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 [2024-09-21 11:25:37,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:25:37,150 INFO L225 Difference]: With dead ends: 293 [2024-09-21 11:25:37,150 INFO L226 Difference]: Without dead ends: 291 [2024-09-21 11:25:37,150 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 [2024-09-21 11:25:37,151 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:25:37,151 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 127 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:25:37,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-09-21 11:25:37,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 287. [2024-09-21 11:25:37,189 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) [2024-09-21 11:25:37,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 288 transitions. [2024-09-21 11:25:37,194 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 288 transitions. Word has length 277 [2024-09-21 11:25:37,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:25:37,194 INFO L474 AbstractCegarLoop]: Abstraction has 287 states and 288 transitions. [2024-09-21 11:25:37,194 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) [2024-09-21 11:25:37,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:37,194 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 288 transitions. [2024-09-21 11:25:37,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-09-21 11:25:37,195 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:25:37,195 INFO L216 NwaCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:25:37,220 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2024-09-21 11:25:37,396 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 [2024-09-21 11:25:37,396 INFO L399 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:25:37,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:37,396 INFO L85 PathProgramCache]: Analyzing trace with hash -274464949, now seen corresponding path program 67 times [2024-09-21 11:25:37,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:25:37,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357043245] [2024-09-21 11:25:37,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:25:37,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:25:37,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:38,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:25:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:38,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-21 11:25:38,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:38,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-21 11:25:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:38,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-21 11:25:38,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:38,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-21 11:25:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:38,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-21 11:25:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:38,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-21 11:25:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:38,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-21 11:25:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:38,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-21 11:25:38,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:38,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-21 11:25:38,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:38,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-21 11:25:38,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:38,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-21 11:25:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:38,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-21 11:25:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:38,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-21 11:25:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:38,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-21 11:25:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:38,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-21 11:25:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:38,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-21 11:25:38,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:38,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-21 11:25:38,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:38,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-21 11:25:38,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:38,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-21 11:25:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:38,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-21 11:25:38,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:38,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-21 11:25:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:38,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-21 11:25:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:38,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-21 11:25:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:38,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-21 11:25:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:38,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-21 11:25:38,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:38,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-21 11:25:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:38,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-21 11:25:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:38,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-21 11:25:38,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:38,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-21 11:25:38,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:38,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-21 11:25:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:38,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-21 11:25:38,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:38,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-21 11:25:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:38,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-21 11:25:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:38,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-21 11:25:38,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:38,970 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-21 11:25:38,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:25:38,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357043245] [2024-09-21 11:25:38,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357043245] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:25:38,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152278141] [2024-09-21 11:25:38,971 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-21 11:25:38,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:25:38,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:25:38,972 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) [2024-09-21 11:25:38,973 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2024-09-21 11:25:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:39,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-09-21 11:25:39,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:25:39,190 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-21 11:25:39,191 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:25:40,435 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-21 11:25:40,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152278141] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:25:40,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:25:40,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73, 73] total 74 [2024-09-21 11:25:40,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753064357] [2024-09-21 11:25:40,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:25:40,436 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-09-21 11:25:40,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:25:40,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-09-21 11:25:40,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1370, Invalid=4032, Unknown=0, NotChecked=0, Total=5402 [2024-09-21 11:25:40,437 INFO L87 Difference]: Start difference. First operand 287 states and 288 transitions. Second operand has 74 states, 74 states have (on average 1.554054054054054) internal successors, (115), 74 states have internal predecessors, (115), 36 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-21 11:25:40,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:25:40,806 INFO L93 Difference]: Finished difference Result 401 states and 437 transitions. [2024-09-21 11:25:40,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-09-21 11:25:40,807 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.554054054054054) internal successors, (115), 74 states have internal predecessors, (115), 36 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Word has length 284 [2024-09-21 11:25:40,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:25:40,808 INFO L225 Difference]: With dead ends: 401 [2024-09-21 11:25:40,808 INFO L226 Difference]: Without dead ends: 288 [2024-09-21 11:25:40,809 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 710 GetRequests, 568 SyntacticMatches, 70 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3907 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1370, Invalid=4032, Unknown=0, NotChecked=0, Total=5402 [2024-09-21 11:25:40,809 INFO L434 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-21 11:25:40,810 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 663 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-21 11:25:40,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-09-21 11:25:40,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2024-09-21 11:25:40,829 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) [2024-09-21 11:25:40,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 289 transitions. [2024-09-21 11:25:40,830 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 289 transitions. Word has length 284 [2024-09-21 11:25:40,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:25:40,830 INFO L474 AbstractCegarLoop]: Abstraction has 288 states and 289 transitions. [2024-09-21 11:25:40,831 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.554054054054054) internal successors, (115), 74 states have internal predecessors, (115), 36 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-21 11:25:40,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:40,831 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 289 transitions. [2024-09-21 11:25:40,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2024-09-21 11:25:40,832 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:25:40,832 INFO L216 NwaCegarLoop]: trace histogram [35, 35, 35, 35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:25:40,861 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2024-09-21 11:25:41,033 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 [2024-09-21 11:25:41,033 INFO L399 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:25:41,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:41,033 INFO L85 PathProgramCache]: Analyzing trace with hash -179464233, now seen corresponding path program 68 times [2024-09-21 11:25:41,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:25:41,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357947384] [2024-09-21 11:25:41,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:25:41,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:25:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:41,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:25:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:41,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-21 11:25:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:41,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-21 11:25:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:41,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-21 11:25:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:41,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-21 11:25:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:41,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-21 11:25:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:41,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-21 11:25:41,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:41,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-21 11:25:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:41,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-21 11:25:41,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:41,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-21 11:25:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:41,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-21 11:25:41,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:41,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-21 11:25:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:41,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-21 11:25:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:41,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-21 11:25:41,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:41,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-21 11:25:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:41,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-21 11:25:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:41,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-21 11:25:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:41,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-21 11:25:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:41,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-21 11:25:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:41,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-21 11:25:41,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:41,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-21 11:25:41,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:41,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-21 11:25:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:41,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-21 11:25:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:41,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-21 11:25:41,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:41,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-21 11:25:41,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:41,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-21 11:25:41,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:41,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-21 11:25:41,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:41,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-21 11:25:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:41,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-21 11:25:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:41,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-21 11:25:41,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:41,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-21 11:25:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:41,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-21 11:25:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:41,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-21 11:25:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:41,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-21 11:25:41,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:41,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-21 11:25:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:41,972 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 663 proven. 1786 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-21 11:25:41,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:25:41,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357947384] [2024-09-21 11:25:41,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357947384] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:25:41,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880332340] [2024-09-21 11:25:41,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 11:25:41,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:25:41,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:25:41,975 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) [2024-09-21 11:25:41,976 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2024-09-21 11:25:42,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 11:25:42,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:25:42,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-09-21 11:25:42,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:25:42,243 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 698 proven. 1751 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-21 11:25:42,243 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:25:43,055 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 698 proven. 1751 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-21 11:25:43,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880332340] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:25:43,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:25:43,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 43 [2024-09-21 11:25:43,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500339469] [2024-09-21 11:25:43,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:25:43,056 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-09-21 11:25:43,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:25:43,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-09-21 11:25:43,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=716, Invalid=1090, Unknown=0, NotChecked=0, Total=1806 [2024-09-21 11:25:43,057 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) [2024-09-21 11:25:43,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:25:43,210 INFO L93 Difference]: Finished difference Result 301 states and 303 transitions. [2024-09-21 11:25:43,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-21 11:25:43,211 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 [2024-09-21 11:25:43,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:25:43,212 INFO L225 Difference]: With dead ends: 301 [2024-09-21 11:25:43,212 INFO L226 Difference]: Without dead ends: 299 [2024-09-21 11:25:43,213 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 [2024-09-21 11:25:43,213 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:25:43,213 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 107 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:25:43,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-09-21 11:25:43,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 295. [2024-09-21 11:25:43,230 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) [2024-09-21 11:25:43,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 296 transitions. [2024-09-21 11:25:43,231 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 296 transitions. Word has length 285 [2024-09-21 11:25:43,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:25:43,232 INFO L474 AbstractCegarLoop]: Abstraction has 295 states and 296 transitions. [2024-09-21 11:25:43,232 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) [2024-09-21 11:25:43,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:43,232 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 296 transitions. [2024-09-21 11:25:43,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2024-09-21 11:25:43,233 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:25:43,233 INFO L216 NwaCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:25:43,246 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2024-09-21 11:25:43,437 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 [2024-09-21 11:25:43,438 INFO L399 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:25:43,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:43,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1554949907, now seen corresponding path program 69 times [2024-09-21 11:25:43,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:25:43,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824377057] [2024-09-21 11:25:43,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:25:43,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:25:43,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:25:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-21 11:25:45,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-21 11:25:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-21 11:25:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-21 11:25:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-21 11:25:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-21 11:25:45,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-21 11:25:45,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-21 11:25:45,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-21 11:25:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-21 11:25:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-21 11:25:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-21 11:25:45,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-21 11:25:45,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-21 11:25:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-21 11:25:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-21 11:25:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-21 11:25:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-21 11:25:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-21 11:25:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-21 11:25:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-21 11:25:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-21 11:25:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-21 11:25:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-21 11:25:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-21 11:25:45,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-21 11:25:45,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-21 11:25:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-21 11:25:45,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-21 11:25:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-21 11:25:45,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-21 11:25:45,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-21 11:25:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-21 11:25:45,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-21 11:25:45,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-21 11:25:45,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:45,287 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-21 11:25:45,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:25:45,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824377057] [2024-09-21 11:25:45,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824377057] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:25:45,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030392869] [2024-09-21 11:25:45,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-21 11:25:45,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:25:45,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:25:45,289 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) [2024-09-21 11:25:45,290 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2024-09-21 11:25:45,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2024-09-21 11:25:45,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:25:45,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-09-21 11:25:45,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:25:45,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-21 11:25:45,576 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:25:47,043 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-21 11:25:47,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030392869] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:25:47,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:25:47,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75, 75] total 76 [2024-09-21 11:25:47,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895037045] [2024-09-21 11:25:47,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:25:47,044 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-09-21 11:25:47,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:25:47,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-09-21 11:25:47,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1445, Invalid=4255, Unknown=0, NotChecked=0, Total=5700 [2024-09-21 11:25:47,046 INFO L87 Difference]: Start difference. First operand 295 states and 296 transitions. Second operand has 76 states, 76 states have (on average 1.5526315789473684) internal successors, (118), 76 states have internal predecessors, (118), 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) [2024-09-21 11:25:47,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:25:47,476 INFO L93 Difference]: Finished difference Result 412 states and 449 transitions. [2024-09-21 11:25:47,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-09-21 11:25:47,477 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.5526315789473684) internal successors, (118), 76 states have internal predecessors, (118), 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 292 [2024-09-21 11:25:47,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:25:47,478 INFO L225 Difference]: With dead ends: 412 [2024-09-21 11:25:47,478 INFO L226 Difference]: Without dead ends: 296 [2024-09-21 11:25:47,479 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 584 SyntacticMatches, 72 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4127 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1445, Invalid=4255, Unknown=0, NotChecked=0, Total=5700 [2024-09-21 11:25:47,480 INFO L434 NwaCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-21 11:25:47,480 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 602 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-21 11:25:47,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-09-21 11:25:47,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2024-09-21 11:25:47,497 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) [2024-09-21 11:25:47,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 297 transitions. [2024-09-21 11:25:47,498 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 297 transitions. Word has length 292 [2024-09-21 11:25:47,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:25:47,499 INFO L474 AbstractCegarLoop]: Abstraction has 296 states and 297 transitions. [2024-09-21 11:25:47,499 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 1.5526315789473684) internal successors, (118), 76 states have internal predecessors, (118), 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) [2024-09-21 11:25:47,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:47,499 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 297 transitions. [2024-09-21 11:25:47,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2024-09-21 11:25:47,500 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:25:47,500 INFO L216 NwaCegarLoop]: trace histogram [36, 36, 36, 36, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:25:47,513 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2024-09-21 11:25:47,704 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 [2024-09-21 11:25:47,704 INFO L399 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:25:47,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:47,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1487952519, now seen corresponding path program 70 times [2024-09-21 11:25:47,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:25:47,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639767925] [2024-09-21 11:25:47,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:25:47,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:25:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:25:48,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-21 11:25:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-21 11:25:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-21 11:25:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-21 11:25:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-21 11:25:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-21 11:25:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-21 11:25:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-21 11:25:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-21 11:25:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-21 11:25:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-21 11:25:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-21 11:25:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-21 11:25:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-21 11:25:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-21 11:25:48,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-21 11:25:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-21 11:25:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-21 11:25:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-21 11:25:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-21 11:25:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-21 11:25:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-21 11:25:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-21 11:25:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-21 11:25:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-21 11:25:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-21 11:25:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-21 11:25:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-21 11:25:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-21 11:25:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-21 11:25:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-21 11:25:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-21 11:25:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-21 11:25:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-21 11:25:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-21 11:25:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:48,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 700 proven. 1891 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-21 11:25:48,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:25:48,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639767925] [2024-09-21 11:25:48,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639767925] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:25:48,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953019069] [2024-09-21 11:25:48,804 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-21 11:25:48,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:25:48,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:25:48,805 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) [2024-09-21 11:25:48,806 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2024-09-21 11:25:48,900 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-21 11:25:48,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:25:48,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-09-21 11:25:48,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:25:49,031 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 736 proven. 1855 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-21 11:25:49,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:25:49,912 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 736 proven. 1855 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-21 11:25:49,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953019069] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:25:49,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:25:49,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 44 [2024-09-21 11:25:49,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82902650] [2024-09-21 11:25:49,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:25:49,912 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-21 11:25:49,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:25:49,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-21 11:25:49,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=754, Invalid=1138, Unknown=0, NotChecked=0, Total=1892 [2024-09-21 11:25:49,913 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) [2024-09-21 11:25:50,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:25:50,110 INFO L93 Difference]: Finished difference Result 309 states and 311 transitions. [2024-09-21 11:25:50,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-09-21 11:25:50,111 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 [2024-09-21 11:25:50,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:25:50,113 INFO L225 Difference]: With dead ends: 309 [2024-09-21 11:25:50,113 INFO L226 Difference]: Without dead ends: 307 [2024-09-21 11:25:50,113 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 619 SyntacticMatches, 72 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1722 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=760, Invalid=1220, Unknown=0, NotChecked=0, Total=1980 [2024-09-21 11:25:50,113 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:25:50,113 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 111 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:25:50,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-09-21 11:25:50,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 303. [2024-09-21 11:25:50,132 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) [2024-09-21 11:25:50,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 304 transitions. [2024-09-21 11:25:50,133 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 304 transitions. Word has length 293 [2024-09-21 11:25:50,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:25:50,133 INFO L474 AbstractCegarLoop]: Abstraction has 303 states and 304 transitions. [2024-09-21 11:25:50,134 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) [2024-09-21 11:25:50,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:50,134 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 304 transitions. [2024-09-21 11:25:50,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-09-21 11:25:50,135 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:25:50,135 INFO L216 NwaCegarLoop]: trace histogram [37, 37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:25:50,150 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2024-09-21 11:25:50,338 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 [2024-09-21 11:25:50,338 INFO L399 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:25:50,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:50,339 INFO L85 PathProgramCache]: Analyzing trace with hash 919933195, now seen corresponding path program 71 times [2024-09-21 11:25:50,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:25:50,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978024685] [2024-09-21 11:25:50,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:25:50,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:25:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:25:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-21 11:25:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-21 11:25:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-21 11:25:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-21 11:25:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-21 11:25:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-21 11:25:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-21 11:25:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-21 11:25:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-21 11:25:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-21 11:25:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-21 11:25:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-21 11:25:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-21 11:25:51,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-21 11:25:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-21 11:25:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-21 11:25:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-21 11:25:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-21 11:25:51,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-21 11:25:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-21 11:25:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-21 11:25:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-21 11:25:51,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-21 11:25:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-21 11:25:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-21 11:25:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-21 11:25:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-21 11:25:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-21 11:25:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-21 11:25:51,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-21 11:25:51,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-21 11:25:51,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-21 11:25:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-21 11:25:51,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-21 11:25:51,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-21 11:25:51,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-21 11:25:51,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:51,960 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-21 11:25:51,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:25:51,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978024685] [2024-09-21 11:25:51,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978024685] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:25:51,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168888630] [2024-09-21 11:25:51,961 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-21 11:25:51,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:25:51,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:25:51,962 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) [2024-09-21 11:25:51,965 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2024-09-21 11:25:52,087 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2024-09-21 11:25:52,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:25:52,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-09-21 11:25:52,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:25:52,201 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-21 11:25:52,202 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:25:53,539 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-21 11:25:53,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168888630] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:25:53,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:25:53,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77, 77] total 78 [2024-09-21 11:25:53,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196420904] [2024-09-21 11:25:53,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:25:53,543 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-09-21 11:25:53,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:25:53,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-09-21 11:25:53,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1522, Invalid=4484, Unknown=0, NotChecked=0, Total=6006 [2024-09-21 11:25:53,545 INFO L87 Difference]: Start difference. First operand 303 states and 304 transitions. Second operand has 78 states, 78 states have (on average 1.5512820512820513) internal successors, (121), 78 states have internal predecessors, (121), 38 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-21 11:25:53,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:25:53,961 INFO L93 Difference]: Finished difference Result 423 states and 461 transitions. [2024-09-21 11:25:53,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-09-21 11:25:53,965 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 1.5512820512820513) internal successors, (121), 78 states have internal predecessors, (121), 38 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 300 [2024-09-21 11:25:53,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:25:53,967 INFO L225 Difference]: With dead ends: 423 [2024-09-21 11:25:53,967 INFO L226 Difference]: Without dead ends: 304 [2024-09-21 11:25:53,968 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 600 SyntacticMatches, 74 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4353 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1522, Invalid=4484, Unknown=0, NotChecked=0, Total=6006 [2024-09-21 11:25:53,968 INFO L434 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-21 11:25:53,969 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 617 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-21 11:25:53,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-09-21 11:25:54,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2024-09-21 11:25:54,006 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) [2024-09-21 11:25:54,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 305 transitions. [2024-09-21 11:25:54,011 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 305 transitions. Word has length 300 [2024-09-21 11:25:54,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:25:54,011 INFO L474 AbstractCegarLoop]: Abstraction has 304 states and 305 transitions. [2024-09-21 11:25:54,011 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 1.5512820512820513) internal successors, (121), 78 states have internal predecessors, (121), 38 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-21 11:25:54,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:54,011 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 305 transitions. [2024-09-21 11:25:54,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-09-21 11:25:54,012 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:25:54,012 INFO L216 NwaCegarLoop]: trace histogram [37, 37, 37, 37, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:25:54,033 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2024-09-21 11:25:54,216 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 [2024-09-21 11:25:54,216 INFO L399 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:25:54,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:54,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1019997801, now seen corresponding path program 72 times [2024-09-21 11:25:54,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:25:54,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603940391] [2024-09-21 11:25:54,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:25:54,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:25:54,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:25:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-21 11:25:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-21 11:25:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-21 11:25:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-21 11:25:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-21 11:25:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-21 11:25:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-21 11:25:55,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-21 11:25:55,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-21 11:25:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-21 11:25:55,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-21 11:25:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-21 11:25:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-21 11:25:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-21 11:25:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-21 11:25:55,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-21 11:25:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-21 11:25:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-21 11:25:55,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-21 11:25:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-21 11:25:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-21 11:25:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-21 11:25:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-21 11:25:55,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-21 11:25:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-21 11:25:55,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-21 11:25:55,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-21 11:25:55,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-21 11:25:55,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-21 11:25:55,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-21 11:25:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-21 11:25:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-21 11:25:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-21 11:25:55,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-21 11:25:55,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-21 11:25:55,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-09-21 11:25:55,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:55,901 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 738 proven. 1999 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-21 11:25:55,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:25:55,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603940391] [2024-09-21 11:25:55,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603940391] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:25:55,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200568406] [2024-09-21 11:25:55,901 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-21 11:25:55,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:25:55,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:25:55,903 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) [2024-09-21 11:25:55,904 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2024-09-21 11:25:56,047 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2024-09-21 11:25:56,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:25:56,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-09-21 11:25:56,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:25:56,222 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 775 proven. 1962 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-21 11:25:56,222 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:25:57,368 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 775 proven. 1962 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-21 11:25:57,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200568406] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:25:57,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:25:57,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 45 [2024-09-21 11:25:57,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408637594] [2024-09-21 11:25:57,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:25:57,369 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-21 11:25:57,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:25:57,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-21 11:25:57,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=793, Invalid=1187, Unknown=0, NotChecked=0, Total=1980 [2024-09-21 11:25:57,370 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) [2024-09-21 11:25:57,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:25:57,597 INFO L93 Difference]: Finished difference Result 317 states and 319 transitions. [2024-09-21 11:25:57,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-21 11:25:57,597 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 [2024-09-21 11:25:57,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:25:57,599 INFO L225 Difference]: With dead ends: 317 [2024-09-21 11:25:57,599 INFO L226 Difference]: Without dead ends: 315 [2024-09-21 11:25:57,599 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 [2024-09-21 11:25:57,599 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:25:57,599 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 130 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:25:57,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-09-21 11:25:57,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 311. [2024-09-21 11:25:57,618 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) [2024-09-21 11:25:57,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 312 transitions. [2024-09-21 11:25:57,619 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 312 transitions. Word has length 301 [2024-09-21 11:25:57,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:25:57,619 INFO L474 AbstractCegarLoop]: Abstraction has 311 states and 312 transitions. [2024-09-21 11:25:57,619 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) [2024-09-21 11:25:57,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:57,620 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 312 transitions. [2024-09-21 11:25:57,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-09-21 11:25:57,621 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:25:57,621 INFO L216 NwaCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:25:57,633 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2024-09-21 11:25:57,824 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 [2024-09-21 11:25:57,824 INFO L399 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:25:57,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:25:57,825 INFO L85 PathProgramCache]: Analyzing trace with hash -574462163, now seen corresponding path program 73 times [2024-09-21 11:25:57,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:25:57,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505768231] [2024-09-21 11:25:57,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:25:57,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:25:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:25:59,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-21 11:25:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-21 11:25:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-21 11:25:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-21 11:25:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-21 11:25:59,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-21 11:25:59,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-21 11:25:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-21 11:25:59,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-21 11:25:59,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-21 11:25:59,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-21 11:25:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-21 11:25:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-21 11:25:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-21 11:25:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-21 11:25:59,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-21 11:25:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-21 11:25:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-21 11:25:59,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-21 11:25:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-21 11:25:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-21 11:25:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-21 11:25:59,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-21 11:25:59,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-21 11:25:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-21 11:25:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-21 11:25:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-21 11:25:59,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-21 11:25:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-21 11:25:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-21 11:25:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-21 11:25:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-21 11:25:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-21 11:25:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-21 11:25:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-21 11:25:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-09-21 11:25:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-21 11:25:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,871 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-21 11:25:59,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:25:59,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505768231] [2024-09-21 11:25:59,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505768231] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:25:59,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486507324] [2024-09-21 11:25:59,872 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-21 11:25:59,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:25:59,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:25:59,873 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) [2024-09-21 11:25:59,874 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2024-09-21 11:25:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:25:59,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-09-21 11:25:59,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:26:00,113 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-21 11:26:00,113 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:26:01,720 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-21 11:26:01,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486507324] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:26:01,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:26:01,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79, 79] total 80 [2024-09-21 11:26:01,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188918090] [2024-09-21 11:26:01,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:26:01,721 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-09-21 11:26:01,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:26:01,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-09-21 11:26:01,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1601, Invalid=4719, Unknown=0, NotChecked=0, Total=6320 [2024-09-21 11:26:01,722 INFO L87 Difference]: Start difference. First operand 311 states and 312 transitions. Second operand has 80 states, 80 states have (on average 1.55) internal successors, (124), 80 states have internal predecessors, (124), 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) [2024-09-21 11:26:02,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:26:02,088 INFO L93 Difference]: Finished difference Result 434 states and 473 transitions. [2024-09-21 11:26:02,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-09-21 11:26:02,089 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.55) internal successors, (124), 80 states have internal predecessors, (124), 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 308 [2024-09-21 11:26:02,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:26:02,090 INFO L225 Difference]: With dead ends: 434 [2024-09-21 11:26:02,090 INFO L226 Difference]: Without dead ends: 312 [2024-09-21 11:26:02,091 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 770 GetRequests, 616 SyntacticMatches, 76 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4585 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1601, Invalid=4719, Unknown=0, NotChecked=0, Total=6320 [2024-09-21 11:26:02,091 INFO L434 NwaCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-21 11:26:02,091 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 642 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-21 11:26:02,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-09-21 11:26:02,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2024-09-21 11:26:02,110 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) [2024-09-21 11:26:02,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 313 transitions. [2024-09-21 11:26:02,111 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 313 transitions. Word has length 308 [2024-09-21 11:26:02,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:26:02,111 INFO L474 AbstractCegarLoop]: Abstraction has 312 states and 313 transitions. [2024-09-21 11:26:02,111 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 1.55) internal successors, (124), 80 states have internal predecessors, (124), 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) [2024-09-21 11:26:02,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:26:02,112 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 313 transitions. [2024-09-21 11:26:02,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-09-21 11:26:02,113 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:26:02,113 INFO L216 NwaCegarLoop]: trace histogram [38, 38, 38, 38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:26:02,126 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2024-09-21 11:26:02,316 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 [2024-09-21 11:26:02,317 INFO L399 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:26:02,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:26:02,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1332864071, now seen corresponding path program 74 times [2024-09-21 11:26:02,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:26:02,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127992185] [2024-09-21 11:26:02,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:26:02,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:26:02,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:26:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-21 11:26:03,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-21 11:26:03,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-21 11:26:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-21 11:26:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-21 11:26:03,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-21 11:26:03,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-21 11:26:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-21 11:26:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-21 11:26:03,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-21 11:26:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-21 11:26:03,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-21 11:26:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-21 11:26:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-21 11:26:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-21 11:26:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-21 11:26:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-21 11:26:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-21 11:26:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-21 11:26:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-21 11:26:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-21 11:26:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-21 11:26:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-21 11:26:03,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-21 11:26:03,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-21 11:26:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-21 11:26:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-21 11:26:03,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-21 11:26:03,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-21 11:26:03,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-21 11:26:03,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-21 11:26:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-21 11:26:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-09-21 11:26:03,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-21 11:26:03,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-09-21 11:26:03,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-21 11:26:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-09-21 11:26:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:03,557 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 777 proven. 2110 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-21 11:26:03,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:26:03,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127992185] [2024-09-21 11:26:03,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127992185] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:26:03,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34313087] [2024-09-21 11:26:03,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 11:26:03,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:26:03,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:26:03,559 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) [2024-09-21 11:26:03,563 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2024-09-21 11:26:03,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 11:26:03,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:26:03,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-09-21 11:26:03,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:26:03,866 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 815 proven. 2072 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-21 11:26:03,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:26:05,162 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 815 proven. 2072 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-21 11:26:05,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34313087] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:26:05,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:26:05,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 46 [2024-09-21 11:26:05,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135659921] [2024-09-21 11:26:05,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:26:05,164 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-21 11:26:05,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:26:05,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-21 11:26:05,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=833, Invalid=1237, Unknown=0, NotChecked=0, Total=2070 [2024-09-21 11:26:05,165 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) [2024-09-21 11:26:05,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:26:05,379 INFO L93 Difference]: Finished difference Result 325 states and 327 transitions. [2024-09-21 11:26:05,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-09-21 11:26:05,379 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 [2024-09-21 11:26:05,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:26:05,381 INFO L225 Difference]: With dead ends: 325 [2024-09-21 11:26:05,381 INFO L226 Difference]: Without dead ends: 323 [2024-09-21 11:26:05,382 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 651 SyntacticMatches, 78 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1972 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=839, Invalid=1323, Unknown=0, NotChecked=0, Total=2162 [2024-09-21 11:26:05,382 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:26:05,382 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 103 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:26:05,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-09-21 11:26:05,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 319. [2024-09-21 11:26:05,401 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) [2024-09-21 11:26:05,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 320 transitions. [2024-09-21 11:26:05,403 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 320 transitions. Word has length 309 [2024-09-21 11:26:05,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:26:05,403 INFO L474 AbstractCegarLoop]: Abstraction has 319 states and 320 transitions. [2024-09-21 11:26:05,403 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) [2024-09-21 11:26:05,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:26:05,404 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 320 transitions. [2024-09-21 11:26:05,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2024-09-21 11:26:05,405 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:26:05,405 INFO L216 NwaCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:26:05,419 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2024-09-21 11:26:05,608 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 [2024-09-21 11:26:05,609 INFO L399 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:26:05,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:26:05,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1362029877, now seen corresponding path program 75 times [2024-09-21 11:26:05,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:26:05,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460049868] [2024-09-21 11:26:05,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:26:05,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:26:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:26:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-21 11:26:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-21 11:26:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-21 11:26:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-21 11:26:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-21 11:26:07,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-21 11:26:07,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-21 11:26:07,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-21 11:26:07,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-21 11:26:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-21 11:26:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-21 11:26:07,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-21 11:26:07,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-21 11:26:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-21 11:26:07,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-21 11:26:07,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-21 11:26:07,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-21 11:26:07,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-21 11:26:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-21 11:26:07,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-21 11:26:07,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-21 11:26:07,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-21 11:26:07,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-21 11:26:07,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-21 11:26:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-21 11:26:07,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-21 11:26:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-21 11:26:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-21 11:26:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-21 11:26:07,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-21 11:26:07,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-21 11:26:07,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-21 11:26:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-09-21 11:26:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-21 11:26:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-09-21 11:26:07,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-21 11:26:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-09-21 11:26:07,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-21 11:26:07,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:07,786 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-21 11:26:07,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:26:07,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460049868] [2024-09-21 11:26:07,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460049868] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:26:07,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390463084] [2024-09-21 11:26:07,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-21 11:26:07,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:26:07,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:26:07,790 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) [2024-09-21 11:26:07,791 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2024-09-21 11:26:07,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2024-09-21 11:26:07,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:26:07,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-09-21 11:26:07,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:26:08,085 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-21 11:26:08,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:26:09,789 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-21 11:26:09,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390463084] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:26:09,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:26:09,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81, 81] total 82 [2024-09-21 11:26:09,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973201142] [2024-09-21 11:26:09,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:26:09,791 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2024-09-21 11:26:09,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:26:09,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2024-09-21 11:26:09,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1682, Invalid=4960, Unknown=0, NotChecked=0, Total=6642 [2024-09-21 11:26:09,792 INFO L87 Difference]: Start difference. First operand 319 states and 320 transitions. Second operand has 82 states, 82 states have (on average 1.548780487804878) internal successors, (127), 82 states have internal predecessors, (127), 40 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-21 11:26:10,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:26:10,162 INFO L93 Difference]: Finished difference Result 445 states and 485 transitions. [2024-09-21 11:26:10,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-09-21 11:26:10,163 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 1.548780487804878) internal successors, (127), 82 states have internal predecessors, (127), 40 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 316 [2024-09-21 11:26:10,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:26:10,165 INFO L225 Difference]: With dead ends: 445 [2024-09-21 11:26:10,165 INFO L226 Difference]: Without dead ends: 320 [2024-09-21 11:26:10,166 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 790 GetRequests, 632 SyntacticMatches, 78 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4823 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1682, Invalid=4960, Unknown=0, NotChecked=0, Total=6642 [2024-09-21 11:26:10,166 INFO L434 NwaCegarLoop]: 85 mSDtfsCounter, 0 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:26:10,166 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 563 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:26:10,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-09-21 11:26:10,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2024-09-21 11:26:10,186 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) [2024-09-21 11:26:10,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 321 transitions. [2024-09-21 11:26:10,188 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 321 transitions. Word has length 316 [2024-09-21 11:26:10,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:26:10,188 INFO L474 AbstractCegarLoop]: Abstraction has 320 states and 321 transitions. [2024-09-21 11:26:10,188 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 1.548780487804878) internal successors, (127), 82 states have internal predecessors, (127), 40 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-21 11:26:10,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:26:10,188 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 321 transitions. [2024-09-21 11:26:10,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-09-21 11:26:10,190 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:26:10,190 INFO L216 NwaCegarLoop]: trace histogram [39, 39, 39, 39, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:26:10,205 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2024-09-21 11:26:10,394 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 [2024-09-21 11:26:10,395 INFO L399 AbstractCegarLoop]: === Iteration 79 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:26:10,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:26:10,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1172997289, now seen corresponding path program 76 times [2024-09-21 11:26:10,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:26:10,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376583658] [2024-09-21 11:26:10,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:26:10,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:26:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:26:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-21 11:26:11,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-21 11:26:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-21 11:26:11,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-21 11:26:11,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-21 11:26:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-21 11:26:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-21 11:26:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-21 11:26:11,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-21 11:26:11,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-21 11:26:11,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-21 11:26:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-21 11:26:11,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-21 11:26:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-21 11:26:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-21 11:26:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-21 11:26:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-21 11:26:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-21 11:26:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-21 11:26:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-21 11:26:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-21 11:26:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-21 11:26:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-21 11:26:11,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-21 11:26:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-21 11:26:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-21 11:26:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-21 11:26:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-21 11:26:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-21 11:26:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-21 11:26:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-21 11:26:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-09-21 11:26:11,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-21 11:26:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-09-21 11:26:11,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-21 11:26:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-09-21 11:26:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-21 11:26:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-09-21 11:26:11,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:11,526 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 817 proven. 2224 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-21 11:26:11,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:26:11,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376583658] [2024-09-21 11:26:11,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376583658] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:26:11,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045698440] [2024-09-21 11:26:11,527 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-21 11:26:11,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:26:11,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:26:11,529 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) [2024-09-21 11:26:11,532 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2024-09-21 11:26:11,636 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-21 11:26:11,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:26:11,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-09-21 11:26:11,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:26:11,776 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 856 proven. 2185 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-21 11:26:11,776 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:26:12,797 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 856 proven. 2185 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-21 11:26:12,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045698440] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:26:12,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:26:12,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 47 [2024-09-21 11:26:12,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757069054] [2024-09-21 11:26:12,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:26:12,798 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-09-21 11:26:12,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:26:12,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-09-21 11:26:12,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=874, Invalid=1288, Unknown=0, NotChecked=0, Total=2162 [2024-09-21 11:26:12,799 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) [2024-09-21 11:26:12,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:26:12,987 INFO L93 Difference]: Finished difference Result 333 states and 335 transitions. [2024-09-21 11:26:12,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-21 11:26:12,988 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 [2024-09-21 11:26:12,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:26:12,990 INFO L225 Difference]: With dead ends: 333 [2024-09-21 11:26:12,990 INFO L226 Difference]: Without dead ends: 331 [2024-09-21 11:26:12,990 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 794 GetRequests, 670 SyntacticMatches, 78 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1983 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=880, Invalid=1376, Unknown=0, NotChecked=0, Total=2256 [2024-09-21 11:26:12,991 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-21 11:26:12,991 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 101 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-21 11:26:12,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-09-21 11:26:13,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 327. [2024-09-21 11:26:13,011 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) [2024-09-21 11:26:13,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 328 transitions. [2024-09-21 11:26:13,013 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 328 transitions. Word has length 317 [2024-09-21 11:26:13,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:26:13,014 INFO L474 AbstractCegarLoop]: Abstraction has 327 states and 328 transitions. [2024-09-21 11:26:13,014 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) [2024-09-21 11:26:13,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:26:13,014 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 328 transitions. [2024-09-21 11:26:13,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-09-21 11:26:13,015 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:26:13,015 INFO L216 NwaCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:26:13,029 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2024-09-21 11:26:13,219 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 [2024-09-21 11:26:13,220 INFO L399 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:26:13,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:26:13,220 INFO L85 PathProgramCache]: Analyzing trace with hash -603290259, now seen corresponding path program 77 times [2024-09-21 11:26:13,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:26:13,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401251157] [2024-09-21 11:26:13,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:26:13,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:26:13,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:26:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,228 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-21 11:26:15,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-21 11:26:15,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-21 11:26:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,232 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-21 11:26:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-21 11:26:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-21 11:26:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-21 11:26:15,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-21 11:26:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-21 11:26:15,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-21 11:26:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-21 11:26:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-21 11:26:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-21 11:26:15,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-21 11:26:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-21 11:26:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-21 11:26:15,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-21 11:26:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-21 11:26:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-21 11:26:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-21 11:26:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-21 11:26:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-21 11:26:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-21 11:26:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-21 11:26:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-21 11:26:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-21 11:26:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-21 11:26:15,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-21 11:26:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-21 11:26:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-21 11:26:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-21 11:26:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-09-21 11:26:15,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-21 11:26:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-09-21 11:26:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-21 11:26:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-09-21 11:26:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-21 11:26:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-09-21 11:26:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-21 11:26:15,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:15,264 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-21 11:26:15,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:26:15,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401251157] [2024-09-21 11:26:15,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401251157] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:26:15,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198387255] [2024-09-21 11:26:15,265 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-21 11:26:15,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:26:15,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:26:15,266 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) [2024-09-21 11:26:15,271 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2024-09-21 11:26:15,412 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2024-09-21 11:26:15,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:26:15,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-09-21 11:26:15,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:26:15,573 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-21 11:26:15,573 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:26:17,368 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-21 11:26:17,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198387255] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:26:17,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:26:17,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83, 83] total 84 [2024-09-21 11:26:17,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112532694] [2024-09-21 11:26:17,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:26:17,369 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-09-21 11:26:17,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:26:17,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-09-21 11:26:17,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1765, Invalid=5207, Unknown=0, NotChecked=0, Total=6972 [2024-09-21 11:26:17,370 INFO L87 Difference]: Start difference. First operand 327 states and 328 transitions. Second operand has 84 states, 84 states have (on average 1.5476190476190477) internal successors, (130), 84 states have internal predecessors, (130), 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) [2024-09-21 11:26:17,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:26:17,812 INFO L93 Difference]: Finished difference Result 456 states and 497 transitions. [2024-09-21 11:26:17,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-09-21 11:26:17,813 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.5476190476190477) internal successors, (130), 84 states have internal predecessors, (130), 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 324 [2024-09-21 11:26:17,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:26:17,815 INFO L225 Difference]: With dead ends: 456 [2024-09-21 11:26:17,815 INFO L226 Difference]: Without dead ends: 328 [2024-09-21 11:26:17,815 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 810 GetRequests, 648 SyntacticMatches, 80 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5067 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1765, Invalid=5207, Unknown=0, NotChecked=0, Total=6972 [2024-09-21 11:26:17,816 INFO L434 NwaCegarLoop]: 87 mSDtfsCounter, 0 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-21 11:26:17,816 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 576 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-21 11:26:17,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-09-21 11:26:17,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2024-09-21 11:26:17,836 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) [2024-09-21 11:26:17,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 329 transitions. [2024-09-21 11:26:17,837 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 329 transitions. Word has length 324 [2024-09-21 11:26:17,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:26:17,838 INFO L474 AbstractCegarLoop]: Abstraction has 328 states and 329 transitions. [2024-09-21 11:26:17,838 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 1.5476190476190477) internal successors, (130), 84 states have internal predecessors, (130), 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) [2024-09-21 11:26:17,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:26:17,838 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 329 transitions. [2024-09-21 11:26:17,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2024-09-21 11:26:17,839 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:26:17,839 INFO L216 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:26:17,853 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2024-09-21 11:26:18,043 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 [2024-09-21 11:26:18,044 INFO L399 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:26:18,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:26:18,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1171497465, now seen corresponding path program 78 times [2024-09-21 11:26:18,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:26:18,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224973052] [2024-09-21 11:26:18,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:26:18,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:26:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:26:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-21 11:26:19,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-21 11:26:19,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-21 11:26:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-21 11:26:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-21 11:26:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-21 11:26:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-21 11:26:19,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-21 11:26:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-21 11:26:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-21 11:26:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-21 11:26:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-21 11:26:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-21 11:26:19,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-21 11:26:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-21 11:26:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-21 11:26:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-21 11:26:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-21 11:26:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-21 11:26:19,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-21 11:26:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-21 11:26:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-21 11:26:19,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-21 11:26:19,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-21 11:26:19,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-21 11:26:19,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-21 11:26:19,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-21 11:26:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-21 11:26:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-21 11:26:19,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-21 11:26:19,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-21 11:26:19,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-21 11:26:19,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-09-21 11:26:19,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-21 11:26:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-09-21 11:26:19,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-21 11:26:19,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-09-21 11:26:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-21 11:26:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-09-21 11:26:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:19,513 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 858 proven. 2341 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-21 11:26:19,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:26:19,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224973052] [2024-09-21 11:26:19,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224973052] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:26:19,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683857474] [2024-09-21 11:26:19,514 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-21 11:26:19,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:26:19,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:26:19,516 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) [2024-09-21 11:26:19,523 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2024-09-21 11:26:19,670 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2024-09-21 11:26:19,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:26:19,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-09-21 11:26:19,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:26:19,857 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 898 proven. 2301 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-21 11:26:19,857 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:26:21,216 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 898 proven. 2301 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-21 11:26:21,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683857474] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:26:21,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:26:21,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 48 [2024-09-21 11:26:21,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591678614] [2024-09-21 11:26:21,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:26:21,217 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-21 11:26:21,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:26:21,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-21 11:26:21,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=916, Invalid=1340, Unknown=0, NotChecked=0, Total=2256 [2024-09-21 11:26:21,218 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) [2024-09-21 11:26:21,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:26:21,454 INFO L93 Difference]: Finished difference Result 341 states and 343 transitions. [2024-09-21 11:26:21,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-09-21 11:26:21,454 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 [2024-09-21 11:26:21,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:26:21,456 INFO L225 Difference]: With dead ends: 341 [2024-09-21 11:26:21,456 INFO L226 Difference]: Without dead ends: 339 [2024-09-21 11:26:21,457 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 814 GetRequests, 687 SyntacticMatches, 80 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2074 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=922, Invalid=1430, Unknown=0, NotChecked=0, Total=2352 [2024-09-21 11:26:21,457 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:26:21,457 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 102 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:26:21,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2024-09-21 11:26:21,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 335. [2024-09-21 11:26:21,494 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) [2024-09-21 11:26:21,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 336 transitions. [2024-09-21 11:26:21,495 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 336 transitions. Word has length 325 [2024-09-21 11:26:21,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:26:21,495 INFO L474 AbstractCegarLoop]: Abstraction has 335 states and 336 transitions. [2024-09-21 11:26:21,495 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) [2024-09-21 11:26:21,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:26:21,496 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 336 transitions. [2024-09-21 11:26:21,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-09-21 11:26:21,497 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:26:21,497 INFO L216 NwaCegarLoop]: trace histogram [41, 41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:26:21,510 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2024-09-21 11:26:21,700 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 [2024-09-21 11:26:21,701 INFO L399 AbstractCegarLoop]: === Iteration 82 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:26:21,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:26:21,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1739850891, now seen corresponding path program 79 times [2024-09-21 11:26:21,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:26:21,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014828915] [2024-09-21 11:26:21,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:26:21,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:26:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:26:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-21 11:26:24,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-21 11:26:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-21 11:26:24,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-21 11:26:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-21 11:26:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-21 11:26:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-21 11:26:24,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-21 11:26:24,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-21 11:26:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-21 11:26:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-21 11:26:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-21 11:26:24,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-21 11:26:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-21 11:26:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-21 11:26:24,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-21 11:26:24,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-21 11:26:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-21 11:26:24,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-21 11:26:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-21 11:26:24,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-21 11:26:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-21 11:26:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-21 11:26:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-21 11:26:24,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-21 11:26:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-21 11:26:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-21 11:26:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-21 11:26:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-21 11:26:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-21 11:26:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-21 11:26:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-21 11:26:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-09-21 11:26:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-21 11:26:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-09-21 11:26:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-21 11:26:24,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-09-21 11:26:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-21 11:26:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-09-21 11:26:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-21 11:26:24,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,139 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-21 11:26:24,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:26:24,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014828915] [2024-09-21 11:26:24,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014828915] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:26:24,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826496991] [2024-09-21 11:26:24,139 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-21 11:26:24,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:26:24,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:26:24,140 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) [2024-09-21 11:26:24,145 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2024-09-21 11:26:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:24,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-09-21 11:26:24,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:26:24,409 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-21 11:26:24,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:26:26,252 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-21 11:26:26,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826496991] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:26:26,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:26:26,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85, 85] total 86 [2024-09-21 11:26:26,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549297755] [2024-09-21 11:26:26,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:26:26,253 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-09-21 11:26:26,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:26:26,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-09-21 11:26:26,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1850, Invalid=5460, Unknown=0, NotChecked=0, Total=7310 [2024-09-21 11:26:26,258 INFO L87 Difference]: Start difference. First operand 335 states and 336 transitions. Second operand has 86 states, 86 states have (on average 1.5465116279069768) internal successors, (133), 86 states have internal predecessors, (133), 42 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-21 11:26:26,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:26:26,773 INFO L93 Difference]: Finished difference Result 467 states and 509 transitions. [2024-09-21 11:26:26,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-09-21 11:26:26,773 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 1.5465116279069768) internal successors, (133), 86 states have internal predecessors, (133), 42 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Word has length 332 [2024-09-21 11:26:26,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:26:26,775 INFO L225 Difference]: With dead ends: 467 [2024-09-21 11:26:26,775 INFO L226 Difference]: Without dead ends: 336 [2024-09-21 11:26:26,776 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 664 SyntacticMatches, 82 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5317 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1850, Invalid=5460, Unknown=0, NotChecked=0, Total=7310 [2024-09-21 11:26:26,776 INFO L434 NwaCegarLoop]: 89 mSDtfsCounter, 0 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-21 11:26:26,777 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 638 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-21 11:26:26,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-09-21 11:26:26,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2024-09-21 11:26:26,798 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) [2024-09-21 11:26:26,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 337 transitions. [2024-09-21 11:26:26,800 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 337 transitions. Word has length 332 [2024-09-21 11:26:26,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:26:26,800 INFO L474 AbstractCegarLoop]: Abstraction has 336 states and 337 transitions. [2024-09-21 11:26:26,800 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 1.5465116279069768) internal successors, (133), 86 states have internal predecessors, (133), 42 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-21 11:26:26,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:26:26,800 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 337 transitions. [2024-09-21 11:26:26,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2024-09-21 11:26:26,801 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:26:26,801 INFO L216 NwaCegarLoop]: trace histogram [41, 41, 41, 41, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:26:26,819 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2024-09-21 11:26:27,005 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 [2024-09-21 11:26:27,006 INFO L399 AbstractCegarLoop]: === Iteration 83 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:26:27,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:26:27,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1978804969, now seen corresponding path program 80 times [2024-09-21 11:26:27,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:26:27,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921497828] [2024-09-21 11:26:27,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:26:27,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:26:27,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:26:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-21 11:26:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-21 11:26:28,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-21 11:26:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-21 11:26:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-21 11:26:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-21 11:26:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-21 11:26:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-21 11:26:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-21 11:26:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-21 11:26:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-21 11:26:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-21 11:26:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-21 11:26:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-21 11:26:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-21 11:26:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-21 11:26:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-21 11:26:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-21 11:26:28,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-21 11:26:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-21 11:26:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-21 11:26:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-21 11:26:28,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-21 11:26:28,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-21 11:26:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-21 11:26:28,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-21 11:26:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-21 11:26:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-21 11:26:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-21 11:26:28,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-21 11:26:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-21 11:26:28,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-21 11:26:28,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-21 11:26:28,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-09-21 11:26:28,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-21 11:26:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-09-21 11:26:28,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-21 11:26:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-09-21 11:26:28,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-21 11:26:28,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-09-21 11:26:28,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:28,311 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 900 proven. 2461 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-21 11:26:28,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:26:28,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921497828] [2024-09-21 11:26:28,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921497828] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:26:28,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357102505] [2024-09-21 11:26:28,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 11:26:28,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:26:28,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:26:28,313 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) [2024-09-21 11:26:28,314 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2024-09-21 11:26:28,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 11:26:28,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:26:28,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-09-21 11:26:28,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:26:28,613 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 941 proven. 2420 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-21 11:26:28,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:26:29,838 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 941 proven. 2420 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-21 11:26:29,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357102505] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:26:29,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:26:29,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 49 [2024-09-21 11:26:29,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109388998] [2024-09-21 11:26:29,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:26:29,839 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-21 11:26:29,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:26:29,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-21 11:26:29,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=959, Invalid=1393, Unknown=0, NotChecked=0, Total=2352 [2024-09-21 11:26:29,840 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) [2024-09-21 11:26:30,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:26:30,064 INFO L93 Difference]: Finished difference Result 349 states and 351 transitions. [2024-09-21 11:26:30,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-21 11:26:30,064 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 [2024-09-21 11:26:30,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:26:30,066 INFO L225 Difference]: With dead ends: 349 [2024-09-21 11:26:30,067 INFO L226 Difference]: Without dead ends: 347 [2024-09-21 11:26:30,067 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 702 SyntacticMatches, 84 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2251 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=965, Invalid=1485, Unknown=0, NotChecked=0, Total=2450 [2024-09-21 11:26:30,067 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:26:30,067 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 130 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:26:30,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-09-21 11:26:30,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 343. [2024-09-21 11:26:30,089 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) [2024-09-21 11:26:30,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 344 transitions. [2024-09-21 11:26:30,091 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 344 transitions. Word has length 333 [2024-09-21 11:26:30,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:26:30,091 INFO L474 AbstractCegarLoop]: Abstraction has 343 states and 344 transitions. [2024-09-21 11:26:30,091 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) [2024-09-21 11:26:30,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:26:30,091 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 344 transitions. [2024-09-21 11:26:30,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2024-09-21 11:26:30,092 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:26:30,093 INFO L216 NwaCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:26:30,106 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2024-09-21 11:26:30,296 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 [2024-09-21 11:26:30,296 INFO L399 AbstractCegarLoop]: === Iteration 84 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:26:30,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:26:30,297 INFO L85 PathProgramCache]: Analyzing trace with hash -695356499, now seen corresponding path program 81 times [2024-09-21 11:26:30,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:26:30,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816757648] [2024-09-21 11:26:30,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:26:30,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:26:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:26:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-21 11:26:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-21 11:26:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-21 11:26:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-21 11:26:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-21 11:26:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-21 11:26:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-21 11:26:32,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-21 11:26:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-21 11:26:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-21 11:26:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-21 11:26:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-21 11:26:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-21 11:26:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-21 11:26:32,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-21 11:26:32,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-21 11:26:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-21 11:26:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-21 11:26:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-21 11:26:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-21 11:26:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-21 11:26:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-21 11:26:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-21 11:26:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-21 11:26:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-21 11:26:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-21 11:26:32,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-21 11:26:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-21 11:26:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-21 11:26:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-21 11:26:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-21 11:26:32,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-21 11:26:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-21 11:26:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-09-21 11:26:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-21 11:26:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-09-21 11:26:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-21 11:26:32,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-09-21 11:26:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-21 11:26:32,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-09-21 11:26:32,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-21 11:26:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:32,451 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-21 11:26:32,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:26:32,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816757648] [2024-09-21 11:26:32,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816757648] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:26:32,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759238137] [2024-09-21 11:26:32,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-21 11:26:32,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:26:32,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:26:32,453 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) [2024-09-21 11:26:32,454 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2024-09-21 11:26:32,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2024-09-21 11:26:32,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:26:32,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-09-21 11:26:32,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:26:32,745 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-21 11:26:32,745 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:26:35,007 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-21 11:26:35,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759238137] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:26:35,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:26:35,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87, 87] total 88 [2024-09-21 11:26:35,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692931220] [2024-09-21 11:26:35,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:26:35,008 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-09-21 11:26:35,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:26:35,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-09-21 11:26:35,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1937, Invalid=5719, Unknown=0, NotChecked=0, Total=7656 [2024-09-21 11:26:35,009 INFO L87 Difference]: Start difference. First operand 343 states and 344 transitions. Second operand has 88 states, 88 states have (on average 1.5454545454545454) internal successors, (136), 88 states have internal predecessors, (136), 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) [2024-09-21 11:26:35,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:26:35,473 INFO L93 Difference]: Finished difference Result 478 states and 521 transitions. [2024-09-21 11:26:35,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-09-21 11:26:35,474 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 1.5454545454545454) internal successors, (136), 88 states have internal predecessors, (136), 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 340 [2024-09-21 11:26:35,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:26:35,479 INFO L225 Difference]: With dead ends: 478 [2024-09-21 11:26:35,480 INFO L226 Difference]: Without dead ends: 344 [2024-09-21 11:26:35,480 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 850 GetRequests, 680 SyntacticMatches, 84 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5573 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1937, Invalid=5719, Unknown=0, NotChecked=0, Total=7656 [2024-09-21 11:26:35,480 INFO L434 NwaCegarLoop]: 91 mSDtfsCounter, 0 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-21 11:26:35,480 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 702 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-21 11:26:35,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-09-21 11:26:35,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2024-09-21 11:26:35,518 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) [2024-09-21 11:26:35,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 345 transitions. [2024-09-21 11:26:35,520 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 345 transitions. Word has length 340 [2024-09-21 11:26:35,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:26:35,520 INFO L474 AbstractCegarLoop]: Abstraction has 344 states and 345 transitions. [2024-09-21 11:26:35,520 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 1.5454545454545454) internal successors, (136), 88 states have internal predecessors, (136), 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) [2024-09-21 11:26:35,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:26:35,520 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 345 transitions. [2024-09-21 11:26:35,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2024-09-21 11:26:35,521 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:26:35,521 INFO L216 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:26:35,534 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2024-09-21 11:26:35,722 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 [2024-09-21 11:26:35,722 INFO L399 AbstractCegarLoop]: === Iteration 85 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:26:35,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:26:35,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1065629753, now seen corresponding path program 82 times [2024-09-21 11:26:35,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:26:35,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002024939] [2024-09-21 11:26:35,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:26:35,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:26:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:26:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-21 11:26:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-21 11:26:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-21 11:26:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-21 11:26:37,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-21 11:26:37,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-21 11:26:37,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-21 11:26:37,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-21 11:26:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-21 11:26:37,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-21 11:26:37,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-21 11:26:37,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-21 11:26:37,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-21 11:26:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-21 11:26:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-21 11:26:37,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-21 11:26:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-21 11:26:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-21 11:26:37,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-21 11:26:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-21 11:26:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-21 11:26:37,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-21 11:26:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-21 11:26:37,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-21 11:26:37,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-21 11:26:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-21 11:26:37,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-21 11:26:37,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-21 11:26:37,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-21 11:26:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-21 11:26:37,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-21 11:26:37,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-21 11:26:37,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-21 11:26:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-21 11:26:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2024-09-21 11:26:37,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-21 11:26:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-09-21 11:26:37,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-21 11:26:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2024-09-21 11:26:37,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-21 11:26:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2024-09-21 11:26:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:37,210 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 943 proven. 2584 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-21 11:26:37,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:26:37,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002024939] [2024-09-21 11:26:37,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002024939] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:26:37,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206608940] [2024-09-21 11:26:37,210 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-21 11:26:37,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:26:37,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:26:37,211 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) [2024-09-21 11:26:37,212 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2024-09-21 11:26:37,318 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-21 11:26:37,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:26:37,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-09-21 11:26:37,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:26:37,518 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 985 proven. 2542 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-21 11:26:37,518 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:26:38,964 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 985 proven. 2542 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-21 11:26:38,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206608940] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:26:38,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:26:38,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 50 [2024-09-21 11:26:38,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214386953] [2024-09-21 11:26:38,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:26:38,966 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-09-21 11:26:38,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:26:38,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-09-21 11:26:38,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1003, Invalid=1447, Unknown=0, NotChecked=0, Total=2450 [2024-09-21 11:26:38,967 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) [2024-09-21 11:26:39,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:26:39,220 INFO L93 Difference]: Finished difference Result 357 states and 359 transitions. [2024-09-21 11:26:39,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-09-21 11:26:39,221 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 [2024-09-21 11:26:39,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:26:39,227 INFO L225 Difference]: With dead ends: 357 [2024-09-21 11:26:39,230 INFO L226 Difference]: Without dead ends: 355 [2024-09-21 11:26:39,230 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 721 SyntacticMatches, 84 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2262 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1009, Invalid=1541, Unknown=0, NotChecked=0, Total=2550 [2024-09-21 11:26:39,231 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 121 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 [2024-09-21 11:26:39,231 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 121 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:26:39,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-09-21 11:26:39,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 351. [2024-09-21 11:26:39,278 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) [2024-09-21 11:26:39,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 352 transitions. [2024-09-21 11:26:39,280 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 352 transitions. Word has length 341 [2024-09-21 11:26:39,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:26:39,280 INFO L474 AbstractCegarLoop]: Abstraction has 351 states and 352 transitions. [2024-09-21 11:26:39,280 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) [2024-09-21 11:26:39,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:26:39,285 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 352 transitions. [2024-09-21 11:26:39,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2024-09-21 11:26:39,286 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:26:39,286 INFO L216 NwaCegarLoop]: trace histogram [43, 43, 43, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:26:39,300 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2024-09-21 11:26:39,490 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 [2024-09-21 11:26:39,491 INFO L399 AbstractCegarLoop]: === Iteration 86 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:26:39,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:26:39,491 INFO L85 PathProgramCache]: Analyzing trace with hash 278521419, now seen corresponding path program 83 times [2024-09-21 11:26:39,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:26:39,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012224129] [2024-09-21 11:26:39,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:26:39,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:26:39,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:26:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-21 11:26:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-21 11:26:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-21 11:26:41,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-21 11:26:41,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-21 11:26:41,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-21 11:26:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-21 11:26:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-21 11:26:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-21 11:26:41,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-21 11:26:41,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-21 11:26:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-21 11:26:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-21 11:26:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-21 11:26:41,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-21 11:26:41,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-21 11:26:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-21 11:26:41,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-21 11:26:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-21 11:26:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-21 11:26:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-21 11:26:41,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-21 11:26:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-21 11:26:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-21 11:26:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-21 11:26:41,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-21 11:26:41,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-21 11:26:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-21 11:26:41,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-21 11:26:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-21 11:26:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-21 11:26:41,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-21 11:26:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-21 11:26:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-21 11:26:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2024-09-21 11:26:41,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-21 11:26:41,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-09-21 11:26:41,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-21 11:26:41,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2024-09-21 11:26:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-21 11:26:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2024-09-21 11:26:41,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-21 11:26:41,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:41,716 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2751 proven. 903 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-21 11:26:41,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:26:41,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012224129] [2024-09-21 11:26:41,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012224129] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:26:41,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725306212] [2024-09-21 11:26:41,716 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-21 11:26:41,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:26:41,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:26:41,719 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) [2024-09-21 11:26:41,720 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2024-09-21 11:26:41,872 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2024-09-21 11:26:41,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:26:41,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-09-21 11:26:41,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:26:42,006 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2751 proven. 903 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-21 11:26:42,006 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:26:43,605 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2751 proven. 903 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-21 11:26:43,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725306212] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:26:43,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:26:43,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89, 89] total 90 [2024-09-21 11:26:43,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184818474] [2024-09-21 11:26:43,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:26:43,607 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2024-09-21 11:26:43,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:26:43,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2024-09-21 11:26:43,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2026, Invalid=5984, Unknown=0, NotChecked=0, Total=8010 [2024-09-21 11:26:43,610 INFO L87 Difference]: Start difference. First operand 351 states and 352 transitions. Second operand has 90 states, 90 states have (on average 1.5444444444444445) internal successors, (139), 90 states have internal predecessors, (139), 44 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-21 11:26:44,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:26:44,068 INFO L93 Difference]: Finished difference Result 489 states and 533 transitions. [2024-09-21 11:26:44,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2024-09-21 11:26:44,069 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 1.5444444444444445) internal successors, (139), 90 states have internal predecessors, (139), 44 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Word has length 348 [2024-09-21 11:26:44,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:26:44,071 INFO L225 Difference]: With dead ends: 489 [2024-09-21 11:26:44,071 INFO L226 Difference]: Without dead ends: 352 [2024-09-21 11:26:44,072 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 870 GetRequests, 696 SyntacticMatches, 86 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5835 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2026, Invalid=5984, Unknown=0, NotChecked=0, Total=8010 [2024-09-21 11:26:44,072 INFO L434 NwaCegarLoop]: 93 mSDtfsCounter, 0 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-21 11:26:44,072 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 707 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-21 11:26:44,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2024-09-21 11:26:44,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2024-09-21 11:26:44,095 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) [2024-09-21 11:26:44,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 353 transitions. [2024-09-21 11:26:44,097 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 353 transitions. Word has length 348 [2024-09-21 11:26:44,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:26:44,097 INFO L474 AbstractCegarLoop]: Abstraction has 352 states and 353 transitions. [2024-09-21 11:26:44,097 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 1.5444444444444445) internal successors, (139), 90 states have internal predecessors, (139), 44 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-21 11:26:44,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:26:44,098 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 353 transitions. [2024-09-21 11:26:44,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2024-09-21 11:26:44,099 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:26:44,099 INFO L216 NwaCegarLoop]: trace histogram [43, 43, 43, 43, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:26:44,112 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2024-09-21 11:26:44,299 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 [2024-09-21 11:26:44,300 INFO L399 AbstractCegarLoop]: === Iteration 87 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:26:44,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:26:44,300 INFO L85 PathProgramCache]: Analyzing trace with hash -2110185769, now seen corresponding path program 84 times [2024-09-21 11:26:44,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:26:44,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98235316] [2024-09-21 11:26:44,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:26:44,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:26:44,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:26:45,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-21 11:26:45,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-21 11:26:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-21 11:26:45,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-21 11:26:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-21 11:26:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-21 11:26:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-21 11:26:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-21 11:26:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-21 11:26:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-21 11:26:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-21 11:26:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-21 11:26:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-21 11:26:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-21 11:26:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-21 11:26:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-21 11:26:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-21 11:26:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-21 11:26:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-21 11:26:45,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-21 11:26:45,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-21 11:26:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-21 11:26:45,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-21 11:26:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-21 11:26:45,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-21 11:26:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-21 11:26:45,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-21 11:26:45,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-21 11:26:45,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-21 11:26:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-21 11:26:45,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-21 11:26:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-21 11:26:45,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-21 11:26:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-21 11:26:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-21 11:26:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2024-09-21 11:26:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-21 11:26:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2024-09-21 11:26:45,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-21 11:26:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2024-09-21 11:26:45,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-21 11:26:45,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2024-09-21 11:26:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:45,717 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 987 proven. 2710 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-21 11:26:45,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:26:45,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98235316] [2024-09-21 11:26:45,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98235316] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:26:45,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548803811] [2024-09-21 11:26:45,718 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-21 11:26:45,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:26:45,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:26:45,719 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) [2024-09-21 11:26:45,721 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2024-09-21 11:26:45,882 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2024-09-21 11:26:45,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:26:45,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-09-21 11:26:45,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:26:46,036 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 1030 proven. 2667 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-21 11:26:46,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:26:47,201 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 1030 proven. 2667 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-21 11:26:47,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548803811] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:26:47,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:26:47,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 51 [2024-09-21 11:26:47,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347064453] [2024-09-21 11:26:47,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:26:47,203 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-09-21 11:26:47,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:26:47,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-09-21 11:26:47,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1048, Invalid=1502, Unknown=0, NotChecked=0, Total=2550 [2024-09-21 11:26:47,204 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) [2024-09-21 11:26:47,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:26:47,434 INFO L93 Difference]: Finished difference Result 365 states and 367 transitions. [2024-09-21 11:26:47,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-09-21 11:26:47,435 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 [2024-09-21 11:26:47,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:26:47,437 INFO L225 Difference]: With dead ends: 365 [2024-09-21 11:26:47,437 INFO L226 Difference]: Without dead ends: 363 [2024-09-21 11:26:47,437 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 874 GetRequests, 738 SyntacticMatches, 86 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2359 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1054, Invalid=1598, Unknown=0, NotChecked=0, Total=2652 [2024-09-21 11:26:47,437 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:26:47,438 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 132 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:26:47,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-09-21 11:26:47,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 359. [2024-09-21 11:26:47,462 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) [2024-09-21 11:26:47,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 360 transitions. [2024-09-21 11:26:47,463 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 360 transitions. Word has length 349 [2024-09-21 11:26:47,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:26:47,464 INFO L474 AbstractCegarLoop]: Abstraction has 359 states and 360 transitions. [2024-09-21 11:26:47,464 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) [2024-09-21 11:26:47,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:26:47,464 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 360 transitions. [2024-09-21 11:26:47,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2024-09-21 11:26:47,465 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:26:47,465 INFO L216 NwaCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:26:47,478 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2024-09-21 11:26:47,669 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 [2024-09-21 11:26:47,669 INFO L399 AbstractCegarLoop]: === Iteration 88 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:26:47,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:26:47,670 INFO L85 PathProgramCache]: Analyzing trace with hash -2035289619, now seen corresponding path program 85 times [2024-09-21 11:26:47,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:26:47,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967376085] [2024-09-21 11:26:47,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:26:47,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:26:47,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:26:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-21 11:26:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-21 11:26:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-21 11:26:50,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-21 11:26:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-21 11:26:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-21 11:26:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-21 11:26:50,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-21 11:26:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-21 11:26:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-21 11:26:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-21 11:26:50,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-21 11:26:50,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-21 11:26:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-21 11:26:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-21 11:26:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-21 11:26:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-21 11:26:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-21 11:26:50,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-21 11:26:50,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-21 11:26:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-21 11:26:50,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-21 11:26:50,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-21 11:26:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-21 11:26:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-21 11:26:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-21 11:26:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-21 11:26:50,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-21 11:26:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-21 11:26:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-21 11:26:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-21 11:26:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-21 11:26:50,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-21 11:26:50,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-21 11:26:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-21 11:26:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2024-09-21 11:26:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-21 11:26:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2024-09-21 11:26:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-21 11:26:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2024-09-21 11:26:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-21 11:26:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2024-09-21 11:26:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-21 11:26:50,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,077 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2881 proven. 946 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-21 11:26:50,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:26:50,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967376085] [2024-09-21 11:26:50,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967376085] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:26:50,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731899669] [2024-09-21 11:26:50,078 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-21 11:26:50,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:26:50,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:26:50,079 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) [2024-09-21 11:26:50,080 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2024-09-21 11:26:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:50,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-09-21 11:26:50,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:26:50,327 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2881 proven. 946 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-21 11:26:50,328 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:26:52,223 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2881 proven. 946 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-21 11:26:52,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731899669] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:26:52,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:26:52,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91, 91] total 92 [2024-09-21 11:26:52,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142819742] [2024-09-21 11:26:52,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:26:52,224 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2024-09-21 11:26:52,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:26:52,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2024-09-21 11:26:52,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2117, Invalid=6255, Unknown=0, NotChecked=0, Total=8372 [2024-09-21 11:26:52,226 INFO L87 Difference]: Start difference. First operand 359 states and 360 transitions. Second operand has 92 states, 92 states have (on average 1.5434782608695652) internal successors, (142), 92 states have internal predecessors, (142), 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) [2024-09-21 11:26:52,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:26:52,761 INFO L93 Difference]: Finished difference Result 500 states and 545 transitions. [2024-09-21 11:26:52,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2024-09-21 11:26:52,762 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 1.5434782608695652) internal successors, (142), 92 states have internal predecessors, (142), 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 356 [2024-09-21 11:26:52,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:26:52,764 INFO L225 Difference]: With dead ends: 500 [2024-09-21 11:26:52,764 INFO L226 Difference]: Without dead ends: 360 [2024-09-21 11:26:52,765 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 890 GetRequests, 712 SyntacticMatches, 88 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6103 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2117, Invalid=6255, Unknown=0, NotChecked=0, Total=8372 [2024-09-21 11:26:52,765 INFO L434 NwaCegarLoop]: 95 mSDtfsCounter, 0 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-21 11:26:52,765 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 962 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-21 11:26:52,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-09-21 11:26:52,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2024-09-21 11:26:52,791 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) [2024-09-21 11:26:52,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 361 transitions. [2024-09-21 11:26:52,793 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 361 transitions. Word has length 356 [2024-09-21 11:26:52,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:26:52,793 INFO L474 AbstractCegarLoop]: Abstraction has 360 states and 361 transitions. [2024-09-21 11:26:52,793 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 1.5434782608695652) internal successors, (142), 92 states have internal predecessors, (142), 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) [2024-09-21 11:26:52,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:26:52,793 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 361 transitions. [2024-09-21 11:26:52,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2024-09-21 11:26:52,794 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:26:52,794 INFO L216 NwaCegarLoop]: trace histogram [44, 44, 44, 44, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:26:52,811 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2024-09-21 11:26:52,995 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 [2024-09-21 11:26:52,995 INFO L399 AbstractCegarLoop]: === Iteration 89 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:26:52,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:26:52,995 INFO L85 PathProgramCache]: Analyzing trace with hash -150741383, now seen corresponding path program 86 times [2024-09-21 11:26:52,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:26:52,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946926620] [2024-09-21 11:26:52,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:26:52,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:26:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:26:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-21 11:26:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-21 11:26:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-21 11:26:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-21 11:26:54,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-21 11:26:54,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-21 11:26:54,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-21 11:26:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-21 11:26:54,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-21 11:26:54,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-21 11:26:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-21 11:26:54,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-21 11:26:54,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-21 11:26:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-21 11:26:54,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-21 11:26:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-21 11:26:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-21 11:26:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-21 11:26:54,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-21 11:26:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-21 11:26:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-21 11:26:54,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-21 11:26:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-21 11:26:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-21 11:26:54,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-21 11:26:54,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-21 11:26:54,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-21 11:26:54,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-21 11:26:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-21 11:26:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-21 11:26:54,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-21 11:26:54,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-21 11:26:54,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-21 11:26:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-21 11:26:54,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-09-21 11:26:54,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-21 11:26:54,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2024-09-21 11:26:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-21 11:26:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2024-09-21 11:26:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-21 11:26:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2024-09-21 11:26:54,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-21 11:26:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2024-09-21 11:26:54,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:54,547 INFO L134 CoverageAnalysis]: Checked inductivity of 7483 backedges. 1032 proven. 2839 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-21 11:26:54,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:26:54,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946926620] [2024-09-21 11:26:54,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946926620] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:26:54,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92338214] [2024-09-21 11:26:54,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 11:26:54,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:26:54,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:26:54,549 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) [2024-09-21 11:26:54,550 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2024-09-21 11:26:54,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 11:26:54,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:26:54,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-09-21 11:26:54,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:26:54,825 INFO L134 CoverageAnalysis]: Checked inductivity of 7483 backedges. 1076 proven. 2795 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-21 11:26:54,825 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:26:56,400 INFO L134 CoverageAnalysis]: Checked inductivity of 7483 backedges. 1076 proven. 2795 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-21 11:26:56,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92338214] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:26:56,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:26:56,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 52 [2024-09-21 11:26:56,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034709077] [2024-09-21 11:26:56,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:26:56,401 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-09-21 11:26:56,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:26:56,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-09-21 11:26:56,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1094, Invalid=1558, Unknown=0, NotChecked=0, Total=2652 [2024-09-21 11:26:56,402 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) [2024-09-21 11:26:56,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:26:56,637 INFO L93 Difference]: Finished difference Result 373 states and 375 transitions. [2024-09-21 11:26:56,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-09-21 11:26:56,638 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 [2024-09-21 11:26:56,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:26:56,640 INFO L225 Difference]: With dead ends: 373 [2024-09-21 11:26:56,640 INFO L226 Difference]: Without dead ends: 371 [2024-09-21 11:26:56,640 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 894 GetRequests, 753 SyntacticMatches, 90 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2548 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1100, Invalid=1656, Unknown=0, NotChecked=0, Total=2756 [2024-09-21 11:26:56,640 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:26:56,641 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 102 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:26:56,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2024-09-21 11:26:56,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 367. [2024-09-21 11:26:56,666 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) [2024-09-21 11:26:56,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 368 transitions. [2024-09-21 11:26:56,668 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 368 transitions. Word has length 357 [2024-09-21 11:26:56,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:26:56,668 INFO L474 AbstractCegarLoop]: Abstraction has 367 states and 368 transitions. [2024-09-21 11:26:56,668 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) [2024-09-21 11:26:56,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:26:56,669 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 368 transitions. [2024-09-21 11:26:56,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2024-09-21 11:26:56,670 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:26:56,670 INFO L216 NwaCegarLoop]: trace histogram [45, 45, 45, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:26:56,682 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2024-09-21 11:26:56,870 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 [2024-09-21 11:26:56,871 INFO L399 AbstractCegarLoop]: === Iteration 90 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:26:56,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:26:56,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1214334965, now seen corresponding path program 87 times [2024-09-21 11:26:56,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:26:56,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406546952] [2024-09-21 11:26:56,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:26:56,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:26:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:26:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-21 11:26:59,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-21 11:26:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-21 11:26:59,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-21 11:26:59,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-21 11:26:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-21 11:26:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-21 11:26:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-21 11:26:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-21 11:26:59,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-21 11:26:59,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-21 11:26:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-21 11:26:59,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-21 11:26:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-21 11:26:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-21 11:26:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-21 11:26:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-21 11:26:59,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-21 11:26:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-21 11:26:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-21 11:26:59,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-21 11:26:59,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-21 11:26:59,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-21 11:26:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-21 11:26:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-21 11:26:59,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-21 11:26:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-21 11:26:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-21 11:26:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-21 11:26:59,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-21 11:26:59,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-21 11:26:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-21 11:26:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-21 11:26:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-21 11:26:59,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-09-21 11:26:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-21 11:26:59,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2024-09-21 11:26:59,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-21 11:26:59,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2024-09-21 11:26:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-21 11:26:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2024-09-21 11:26:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-21 11:26:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2024-09-21 11:26:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-21 11:26:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:26:59,295 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 3014 proven. 990 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-21 11:26:59,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:26:59,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406546952] [2024-09-21 11:26:59,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406546952] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:26:59,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45823620] [2024-09-21 11:26:59,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-21 11:26:59,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:26:59,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:26:59,297 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) [2024-09-21 11:26:59,298 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2024-09-21 11:26:59,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2024-09-21 11:26:59,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:26:59,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-09-21 11:26:59,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:26:59,604 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 3014 proven. 990 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-21 11:26:59,604 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:27:01,322 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 3014 proven. 990 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-21 11:27:01,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45823620] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:27:01,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:27:01,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93, 93] total 94 [2024-09-21 11:27:01,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79282505] [2024-09-21 11:27:01,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:27:01,323 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2024-09-21 11:27:01,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:27:01,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2024-09-21 11:27:01,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2210, Invalid=6532, Unknown=0, NotChecked=0, Total=8742 [2024-09-21 11:27:01,325 INFO L87 Difference]: Start difference. First operand 367 states and 368 transitions. Second operand has 94 states, 94 states have (on average 1.5425531914893618) internal successors, (145), 94 states have internal predecessors, (145), 46 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-21 11:27:01,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:27:01,778 INFO L93 Difference]: Finished difference Result 511 states and 557 transitions. [2024-09-21 11:27:01,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-09-21 11:27:01,778 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 1.5425531914893618) internal successors, (145), 94 states have internal predecessors, (145), 46 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Word has length 364 [2024-09-21 11:27:01,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:27:01,781 INFO L225 Difference]: With dead ends: 511 [2024-09-21 11:27:01,781 INFO L226 Difference]: Without dead ends: 368 [2024-09-21 11:27:01,782 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 910 GetRequests, 728 SyntacticMatches, 90 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6377 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2210, Invalid=6532, Unknown=0, NotChecked=0, Total=8742 [2024-09-21 11:27:01,782 INFO L434 NwaCegarLoop]: 97 mSDtfsCounter, 0 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-21 11:27:01,782 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 598 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-21 11:27:01,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-09-21 11:27:01,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2024-09-21 11:27:01,809 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) [2024-09-21 11:27:01,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 369 transitions. [2024-09-21 11:27:01,811 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 369 transitions. Word has length 364 [2024-09-21 11:27:01,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:27:01,811 INFO L474 AbstractCegarLoop]: Abstraction has 368 states and 369 transitions. [2024-09-21 11:27:01,811 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 1.5425531914893618) internal successors, (145), 94 states have internal predecessors, (145), 46 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-21 11:27:01,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:27:01,811 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 369 transitions. [2024-09-21 11:27:01,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2024-09-21 11:27:01,812 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:27:01,813 INFO L216 NwaCegarLoop]: trace histogram [45, 45, 45, 45, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:27:01,826 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2024-09-21 11:27:02,013 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 [2024-09-21 11:27:02,014 INFO L399 AbstractCegarLoop]: === Iteration 91 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:27:02,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:27:02,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1353930903, now seen corresponding path program 88 times [2024-09-21 11:27:02,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:27:02,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585278353] [2024-09-21 11:27:02,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:27:02,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:27:02,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:27:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-21 11:27:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-21 11:27:03,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-21 11:27:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-21 11:27:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-21 11:27:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-21 11:27:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-21 11:27:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-21 11:27:03,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-21 11:27:03,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-21 11:27:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-21 11:27:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-21 11:27:03,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-21 11:27:03,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-21 11:27:03,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-21 11:27:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-21 11:27:03,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-21 11:27:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-21 11:27:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-21 11:27:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-21 11:27:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-21 11:27:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-21 11:27:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-21 11:27:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-21 11:27:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-21 11:27:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-21 11:27:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-21 11:27:03,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-21 11:27:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-21 11:27:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-21 11:27:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-21 11:27:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-09-21 11:27:03,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-21 11:27:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-09-21 11:27:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-21 11:27:03,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-09-21 11:27:03,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-21 11:27:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2024-09-21 11:27:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-21 11:27:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2024-09-21 11:27:03,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-21 11:27:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2024-09-21 11:27:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-09-21 11:27:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2024-09-21 11:27:03,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:03,689 INFO L134 CoverageAnalysis]: Checked inductivity of 7833 backedges. 1078 proven. 2971 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-21 11:27:03,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:27:03,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585278353] [2024-09-21 11:27:03,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585278353] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:27:03,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572054899] [2024-09-21 11:27:03,693 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-21 11:27:03,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:27:03,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:27:03,695 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) [2024-09-21 11:27:03,696 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2024-09-21 11:27:03,848 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-21 11:27:03,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:27:03,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 884 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-09-21 11:27:03,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:27:04,064 INFO L134 CoverageAnalysis]: Checked inductivity of 7833 backedges. 1123 proven. 2926 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-21 11:27:04,064 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:27:05,489 INFO L134 CoverageAnalysis]: Checked inductivity of 7833 backedges. 1123 proven. 2926 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-21 11:27:05,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572054899] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:27:05,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:27:05,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 53 [2024-09-21 11:27:05,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603361329] [2024-09-21 11:27:05,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:27:05,490 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-09-21 11:27:05,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:27:05,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-09-21 11:27:05,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1141, Invalid=1615, Unknown=0, NotChecked=0, Total=2756 [2024-09-21 11:27:05,492 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) [2024-09-21 11:27:05,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:27:05,707 INFO L93 Difference]: Finished difference Result 381 states and 383 transitions. [2024-09-21 11:27:05,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-09-21 11:27:05,707 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 [2024-09-21 11:27:05,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:27:05,709 INFO L225 Difference]: With dead ends: 381 [2024-09-21 11:27:05,709 INFO L226 Difference]: Without dead ends: 379 [2024-09-21 11:27:05,710 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 914 GetRequests, 772 SyntacticMatches, 90 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2559 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1147, Invalid=1715, Unknown=0, NotChecked=0, Total=2862 [2024-09-21 11:27:05,710 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:27:05,710 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 120 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:27:05,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-09-21 11:27:05,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 375. [2024-09-21 11:27:05,744 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) [2024-09-21 11:27:05,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 376 transitions. [2024-09-21 11:27:05,746 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 376 transitions. Word has length 365 [2024-09-21 11:27:05,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:27:05,746 INFO L474 AbstractCegarLoop]: Abstraction has 375 states and 376 transitions. [2024-09-21 11:27:05,746 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) [2024-09-21 11:27:05,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:27:05,747 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 376 transitions. [2024-09-21 11:27:05,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2024-09-21 11:27:05,748 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:27:05,748 INFO L216 NwaCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:27:05,761 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2024-09-21 11:27:05,952 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 [2024-09-21 11:27:05,952 INFO L399 AbstractCegarLoop]: === Iteration 92 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:27:05,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:27:05,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1725251629, now seen corresponding path program 89 times [2024-09-21 11:27:05,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:27:05,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970738635] [2024-09-21 11:27:05,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:27:05,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:27:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:27:08,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-21 11:27:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-21 11:27:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-21 11:27:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-21 11:27:08,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,436 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-21 11:27:08,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-21 11:27:08,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-21 11:27:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-21 11:27:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-21 11:27:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-21 11:27:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-21 11:27:08,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-21 11:27:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-21 11:27:08,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-21 11:27:08,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-21 11:27:08,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-21 11:27:08,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-21 11:27:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-21 11:27:08,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-21 11:27:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-21 11:27:08,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-21 11:27:08,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-21 11:27:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-21 11:27:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-21 11:27:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-21 11:27:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-21 11:27:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-21 11:27:08,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-21 11:27:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-21 11:27:08,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-21 11:27:08,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-21 11:27:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-09-21 11:27:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-21 11:27:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-09-21 11:27:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-21 11:27:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-09-21 11:27:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-21 11:27:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2024-09-21 11:27:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-21 11:27:08,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2024-09-21 11:27:08,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-21 11:27:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2024-09-21 11:27:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-09-21 11:27:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2024-09-21 11:27:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-21 11:27:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:08,475 INFO L134 CoverageAnalysis]: Checked inductivity of 8145 backedges. 3150 proven. 1035 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-21 11:27:08,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:27:08,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970738635] [2024-09-21 11:27:08,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970738635] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:27:08,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399221931] [2024-09-21 11:27:08,476 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-21 11:27:08,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:27:08,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:27:08,477 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) [2024-09-21 11:27:08,478 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2024-09-21 11:27:08,637 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2024-09-21 11:27:08,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:27:08,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-09-21 11:27:08,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:27:08,780 INFO L134 CoverageAnalysis]: Checked inductivity of 8145 backedges. 3150 proven. 1035 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-21 11:27:08,780 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:27:10,585 INFO L134 CoverageAnalysis]: Checked inductivity of 8145 backedges. 3150 proven. 1035 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-21 11:27:10,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399221931] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:27:10,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:27:10,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 96 [2024-09-21 11:27:10,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666879331] [2024-09-21 11:27:10,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:27:10,586 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-09-21 11:27:10,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:27:10,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-09-21 11:27:10,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2305, Invalid=6815, Unknown=0, NotChecked=0, Total=9120 [2024-09-21 11:27:10,587 INFO L87 Difference]: Start difference. First operand 375 states and 376 transitions. Second operand has 96 states, 96 states have (on average 1.5416666666666667) internal successors, (148), 96 states have internal predecessors, (148), 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) [2024-09-21 11:27:11,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:27:11,347 INFO L93 Difference]: Finished difference Result 522 states and 569 transitions. [2024-09-21 11:27:11,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-09-21 11:27:11,348 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.5416666666666667) internal successors, (148), 96 states have internal predecessors, (148), 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 372 [2024-09-21 11:27:11,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:27:11,350 INFO L225 Difference]: With dead ends: 522 [2024-09-21 11:27:11,350 INFO L226 Difference]: Without dead ends: 376 [2024-09-21 11:27:11,351 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 930 GetRequests, 744 SyntacticMatches, 92 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6657 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2305, Invalid=6815, Unknown=0, NotChecked=0, Total=9120 [2024-09-21 11:27:11,351 INFO L434 NwaCegarLoop]: 99 mSDtfsCounter, 0 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 1577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-21 11:27:11,351 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1296 Invalid, 1577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-21 11:27:11,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-09-21 11:27:11,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2024-09-21 11:27:11,377 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) [2024-09-21 11:27:11,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 377 transitions. [2024-09-21 11:27:11,379 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 377 transitions. Word has length 372 [2024-09-21 11:27:11,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:27:11,379 INFO L474 AbstractCegarLoop]: Abstraction has 376 states and 377 transitions. [2024-09-21 11:27:11,379 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.5416666666666667) internal successors, (148), 96 states have internal predecessors, (148), 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) [2024-09-21 11:27:11,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:27:11,379 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 377 transitions. [2024-09-21 11:27:11,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2024-09-21 11:27:11,380 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:27:11,381 INFO L216 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:27:11,394 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2024-09-21 11:27:11,584 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 [2024-09-21 11:27:11,584 INFO L399 AbstractCegarLoop]: === Iteration 93 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:27:11,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:27:11,585 INFO L85 PathProgramCache]: Analyzing trace with hash -2034854727, now seen corresponding path program 90 times [2024-09-21 11:27:11,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:27:11,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416677081] [2024-09-21 11:27:11,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:27:11,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:27:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:27:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-21 11:27:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-21 11:27:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-21 11:27:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-21 11:27:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-21 11:27:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-21 11:27:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-21 11:27:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-21 11:27:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-21 11:27:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-21 11:27:13,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-21 11:27:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-21 11:27:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-21 11:27:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-21 11:27:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-21 11:27:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-21 11:27:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-21 11:27:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-21 11:27:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-21 11:27:13,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-21 11:27:13,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-21 11:27:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-21 11:27:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-21 11:27:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-21 11:27:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-21 11:27:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-21 11:27:13,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-21 11:27:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-21 11:27:13,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-21 11:27:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-21 11:27:13,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-09-21 11:27:13,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-21 11:27:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-09-21 11:27:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-21 11:27:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-09-21 11:27:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-21 11:27:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-09-21 11:27:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-21 11:27:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2024-09-21 11:27:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2024-09-21 11:27:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2024-09-21 11:27:13,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-21 11:27:13,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2024-09-21 11:27:13,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-09-21 11:27:13,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2024-09-21 11:27:13,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:13,316 INFO L134 CoverageAnalysis]: Checked inductivity of 8191 backedges. 1125 proven. 3106 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-21 11:27:13,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:27:13,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416677081] [2024-09-21 11:27:13,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416677081] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:27:13,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953548735] [2024-09-21 11:27:13,317 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-21 11:27:13,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:27:13,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:27:13,320 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) [2024-09-21 11:27:13,321 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2024-09-21 11:27:13,493 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2024-09-21 11:27:13,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:27:13,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 903 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-09-21 11:27:13,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:27:13,701 INFO L134 CoverageAnalysis]: Checked inductivity of 8191 backedges. 1171 proven. 3060 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-21 11:27:13,701 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:27:15,334 INFO L134 CoverageAnalysis]: Checked inductivity of 8191 backedges. 1171 proven. 3060 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-21 11:27:15,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953548735] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:27:15,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:27:15,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 54 [2024-09-21 11:27:15,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124812600] [2024-09-21 11:27:15,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:27:15,335 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-09-21 11:27:15,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:27:15,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-09-21 11:27:15,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1189, Invalid=1673, Unknown=0, NotChecked=0, Total=2862 [2024-09-21 11:27:15,336 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) [2024-09-21 11:27:15,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:27:15,565 INFO L93 Difference]: Finished difference Result 389 states and 391 transitions. [2024-09-21 11:27:15,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-09-21 11:27:15,566 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 [2024-09-21 11:27:15,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:27:15,568 INFO L225 Difference]: With dead ends: 389 [2024-09-21 11:27:15,568 INFO L226 Difference]: Without dead ends: 387 [2024-09-21 11:27:15,569 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 934 GetRequests, 789 SyntacticMatches, 92 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2662 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1195, Invalid=1775, Unknown=0, NotChecked=0, Total=2970 [2024-09-21 11:27:15,569 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:27:15,569 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 135 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:27:15,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2024-09-21 11:27:15,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 383. [2024-09-21 11:27:15,607 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) [2024-09-21 11:27:15,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 384 transitions. [2024-09-21 11:27:15,609 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 384 transitions. Word has length 373 [2024-09-21 11:27:15,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:27:15,609 INFO L474 AbstractCegarLoop]: Abstraction has 383 states and 384 transitions. [2024-09-21 11:27:15,610 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) [2024-09-21 11:27:15,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:27:15,610 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 384 transitions. [2024-09-21 11:27:15,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2024-09-21 11:27:15,611 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:27:15,611 INFO L216 NwaCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:27:15,624 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2024-09-21 11:27:15,815 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 [2024-09-21 11:27:15,816 INFO L399 AbstractCegarLoop]: === Iteration 94 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:27:15,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:27:15,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1981908533, now seen corresponding path program 91 times [2024-09-21 11:27:15,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:27:15,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134868039] [2024-09-21 11:27:15,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:27:15,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:27:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:27:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-21 11:27:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-21 11:27:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-21 11:27:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-21 11:27:18,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-21 11:27:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-21 11:27:18,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-21 11:27:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-21 11:27:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-21 11:27:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-21 11:27:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-21 11:27:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-21 11:27:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-21 11:27:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-21 11:27:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-21 11:27:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-21 11:27:18,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-21 11:27:18,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-21 11:27:18,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-21 11:27:18,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-21 11:27:18,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-21 11:27:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-21 11:27:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-21 11:27:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-21 11:27:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-21 11:27:18,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-21 11:27:18,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-21 11:27:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-21 11:27:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-21 11:27:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-21 11:27:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-09-21 11:27:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-21 11:27:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-09-21 11:27:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-21 11:27:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-09-21 11:27:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-21 11:27:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-09-21 11:27:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-21 11:27:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2024-09-21 11:27:18,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2024-09-21 11:27:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2024-09-21 11:27:18,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-21 11:27:18,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2024-09-21 11:27:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-09-21 11:27:18,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2024-09-21 11:27:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2024-09-21 11:27:18,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:18,946 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 3289 proven. 1081 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-21 11:27:18,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:27:18,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134868039] [2024-09-21 11:27:18,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134868039] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:27:18,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710960964] [2024-09-21 11:27:18,946 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-21 11:27:18,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:27:18,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:27:18,948 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) [2024-09-21 11:27:18,949 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2024-09-21 11:27:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:19,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-09-21 11:27:19,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:27:19,249 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 3289 proven. 1081 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-21 11:27:19,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:27:21,391 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 3289 proven. 1081 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-21 11:27:21,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710960964] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:27:21,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:27:21,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 98 [2024-09-21 11:27:21,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701118386] [2024-09-21 11:27:21,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:27:21,392 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-09-21 11:27:21,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:27:21,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-09-21 11:27:21,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2402, Invalid=7104, Unknown=0, NotChecked=0, Total=9506 [2024-09-21 11:27:21,393 INFO L87 Difference]: Start difference. First operand 383 states and 384 transitions. Second operand has 98 states, 98 states have (on average 1.5408163265306123) internal successors, (151), 98 states have internal predecessors, (151), 48 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-21 11:27:21,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:27:21,844 INFO L93 Difference]: Finished difference Result 533 states and 581 transitions. [2024-09-21 11:27:21,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-09-21 11:27:21,845 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 1.5408163265306123) internal successors, (151), 98 states have internal predecessors, (151), 48 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 380 [2024-09-21 11:27:21,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:27:21,847 INFO L225 Difference]: With dead ends: 533 [2024-09-21 11:27:21,847 INFO L226 Difference]: Without dead ends: 384 [2024-09-21 11:27:21,848 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 950 GetRequests, 760 SyntacticMatches, 94 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6943 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2402, Invalid=7104, Unknown=0, NotChecked=0, Total=9506 [2024-09-21 11:27:21,848 INFO L434 NwaCegarLoop]: 101 mSDtfsCounter, 0 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-21 11:27:21,848 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 777 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-21 11:27:21,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2024-09-21 11:27:21,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2024-09-21 11:27:21,874 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) [2024-09-21 11:27:21,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 385 transitions. [2024-09-21 11:27:21,876 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 385 transitions. Word has length 380 [2024-09-21 11:27:21,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:27:21,876 INFO L474 AbstractCegarLoop]: Abstraction has 384 states and 385 transitions. [2024-09-21 11:27:21,876 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 1.5408163265306123) internal successors, (151), 98 states have internal predecessors, (151), 48 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-21 11:27:21,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:27:21,876 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 385 transitions. [2024-09-21 11:27:21,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2024-09-21 11:27:21,877 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:27:21,878 INFO L216 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:27:21,891 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2024-09-21 11:27:22,081 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 [2024-09-21 11:27:22,081 INFO L399 AbstractCegarLoop]: === Iteration 95 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:27:22,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:27:22,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1030192553, now seen corresponding path program 92 times [2024-09-21 11:27:22,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:27:22,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336163932] [2024-09-21 11:27:22,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:27:22,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:27:22,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:27:23,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-21 11:27:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-21 11:27:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-21 11:27:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-21 11:27:23,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-21 11:27:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-21 11:27:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-21 11:27:23,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-21 11:27:23,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-21 11:27:23,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-21 11:27:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-21 11:27:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-21 11:27:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-21 11:27:23,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-21 11:27:23,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-21 11:27:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-21 11:27:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-21 11:27:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-21 11:27:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-21 11:27:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-21 11:27:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-21 11:27:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-21 11:27:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-21 11:27:23,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-21 11:27:23,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-21 11:27:23,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-21 11:27:23,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-21 11:27:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-21 11:27:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-21 11:27:23,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-21 11:27:23,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-21 11:27:23,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-09-21 11:27:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-21 11:27:23,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-09-21 11:27:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-21 11:27:23,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-09-21 11:27:23,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-21 11:27:23,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-09-21 11:27:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-21 11:27:23,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2024-09-21 11:27:23,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-09-21 11:27:23,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2024-09-21 11:27:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-21 11:27:23,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2024-09-21 11:27:23,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2024-09-21 11:27:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2024-09-21 11:27:23,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:23,723 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 1173 proven. 3244 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-21 11:27:23,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:27:23,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336163932] [2024-09-21 11:27:23,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336163932] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:27:23,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857782003] [2024-09-21 11:27:23,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 11:27:23,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:27:23,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:27:23,725 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) [2024-09-21 11:27:23,726 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2024-09-21 11:27:23,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 11:27:23,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:27:23,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 922 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-09-21 11:27:23,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:27:24,013 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 1220 proven. 3197 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-21 11:27:24,013 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:27:25,512 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 1220 proven. 3197 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-09-21 11:27:25,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857782003] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:27:25,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:27:25,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 52] total 55 [2024-09-21 11:27:25,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509371433] [2024-09-21 11:27:25,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:27:25,513 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-09-21 11:27:25,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:27:25,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-09-21 11:27:25,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1238, Invalid=1732, Unknown=0, NotChecked=0, Total=2970 [2024-09-21 11:27:25,514 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) [2024-09-21 11:27:25,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:27:25,797 INFO L93 Difference]: Finished difference Result 397 states and 399 transitions. [2024-09-21 11:27:25,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-09-21 11:27:25,797 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 [2024-09-21 11:27:25,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:27:25,799 INFO L225 Difference]: With dead ends: 397 [2024-09-21 11:27:25,799 INFO L226 Difference]: Without dead ends: 395 [2024-09-21 11:27:25,799 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 [2024-09-21 11:27:25,800 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:27:25,800 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 137 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:27:25,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2024-09-21 11:27:25,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 391. [2024-09-21 11:27:25,827 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) [2024-09-21 11:27:25,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 392 transitions. [2024-09-21 11:27:25,829 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 392 transitions. Word has length 381 [2024-09-21 11:27:25,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:27:25,829 INFO L474 AbstractCegarLoop]: Abstraction has 391 states and 392 transitions. [2024-09-21 11:27:25,829 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) [2024-09-21 11:27:25,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:27:25,829 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 392 transitions. [2024-09-21 11:27:25,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2024-09-21 11:27:25,830 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:27:25,831 INFO L216 NwaCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:27:25,844 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2024-09-21 11:27:26,031 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 [2024-09-21 11:27:26,031 INFO L399 AbstractCegarLoop]: === Iteration 96 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:27:26,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:27:26,031 INFO L85 PathProgramCache]: Analyzing trace with hash -228483475, now seen corresponding path program 93 times [2024-09-21 11:27:26,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:27:26,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47830334] [2024-09-21 11:27:26,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:27:26,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:27:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:27:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-21 11:27:28,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-21 11:27:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-21 11:27:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-21 11:27:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-21 11:27:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-21 11:27:28,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-21 11:27:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-21 11:27:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-21 11:27:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-21 11:27:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-21 11:27:28,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-21 11:27:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-21 11:27:28,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-21 11:27:28,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-21 11:27:28,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-21 11:27:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-21 11:27:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-21 11:27:28,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-21 11:27:28,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-21 11:27:28,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-21 11:27:28,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-21 11:27:28,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-21 11:27:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-21 11:27:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-21 11:27:28,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-21 11:27:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-21 11:27:28,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-21 11:27:28,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-21 11:27:28,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-21 11:27:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-21 11:27:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-09-21 11:27:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-21 11:27:28,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-09-21 11:27:28,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-21 11:27:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-09-21 11:27:28,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-21 11:27:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-09-21 11:27:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-21 11:27:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2024-09-21 11:27:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-09-21 11:27:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2024-09-21 11:27:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-21 11:27:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2024-09-21 11:27:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2024-09-21 11:27:28,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2024-09-21 11:27:28,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2024-09-21 11:27:28,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:28,744 INFO L134 CoverageAnalysis]: Checked inductivity of 8883 backedges. 3431 proven. 1128 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-21 11:27:28,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:27:28,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47830334] [2024-09-21 11:27:28,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47830334] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:27:28,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843978134] [2024-09-21 11:27:28,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-21 11:27:28,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:27:28,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:27:28,746 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) [2024-09-21 11:27:28,747 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2024-09-21 11:27:28,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2024-09-21 11:27:28,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:27:28,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-09-21 11:27:28,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:27:29,073 INFO L134 CoverageAnalysis]: Checked inductivity of 8883 backedges. 3431 proven. 1128 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-21 11:27:29,073 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:27:31,303 INFO L134 CoverageAnalysis]: Checked inductivity of 8883 backedges. 3431 proven. 1128 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-21 11:27:31,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843978134] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:27:31,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:27:31,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99, 99] total 100 [2024-09-21 11:27:31,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331083371] [2024-09-21 11:27:31,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:27:31,304 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2024-09-21 11:27:31,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:27:31,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2024-09-21 11:27:31,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2501, Invalid=7399, Unknown=0, NotChecked=0, Total=9900 [2024-09-21 11:27:31,308 INFO L87 Difference]: Start difference. First operand 391 states and 392 transitions. Second operand has 100 states, 100 states have (on average 1.54) internal successors, (154), 100 states have internal predecessors, (154), 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) [2024-09-21 11:27:31,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:27:31,913 INFO L93 Difference]: Finished difference Result 544 states and 593 transitions. [2024-09-21 11:27:31,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-09-21 11:27:31,914 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 1.54) internal successors, (154), 100 states have internal predecessors, (154), 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 388 [2024-09-21 11:27:31,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:27:31,916 INFO L225 Difference]: With dead ends: 544 [2024-09-21 11:27:31,916 INFO L226 Difference]: Without dead ends: 392 [2024-09-21 11:27:31,917 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 970 GetRequests, 776 SyntacticMatches, 96 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7235 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2501, Invalid=7399, Unknown=0, NotChecked=0, Total=9900 [2024-09-21 11:27:31,917 INFO L434 NwaCegarLoop]: 103 mSDtfsCounter, 0 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-21 11:27:31,917 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1154 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-21 11:27:31,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-09-21 11:27:31,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2024-09-21 11:27:31,944 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) [2024-09-21 11:27:31,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 393 transitions. [2024-09-21 11:27:31,945 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 393 transitions. Word has length 388 [2024-09-21 11:27:31,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:27:31,945 INFO L474 AbstractCegarLoop]: Abstraction has 392 states and 393 transitions. [2024-09-21 11:27:31,945 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 1.54) internal successors, (154), 100 states have internal predecessors, (154), 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) [2024-09-21 11:27:31,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:27:31,946 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 393 transitions. [2024-09-21 11:27:31,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2024-09-21 11:27:31,947 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:27:31,947 INFO L216 NwaCegarLoop]: trace histogram [48, 48, 48, 48, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:27:31,963 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2024-09-21 11:27:32,151 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 [2024-09-21 11:27:32,151 INFO L399 AbstractCegarLoop]: === Iteration 97 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:27:32,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:27:32,152 INFO L85 PathProgramCache]: Analyzing trace with hash 167795449, now seen corresponding path program 94 times [2024-09-21 11:27:32,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:27:32,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518360454] [2024-09-21 11:27:32,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:27:32,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:27:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:27:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-21 11:27:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-21 11:27:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-21 11:27:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-21 11:27:34,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-21 11:27:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-21 11:27:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-21 11:27:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-21 11:27:34,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-21 11:27:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-21 11:27:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-21 11:27:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-21 11:27:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-21 11:27:34,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-21 11:27:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-21 11:27:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-21 11:27:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-21 11:27:34,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-21 11:27:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-21 11:27:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-21 11:27:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-21 11:27:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-21 11:27:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-21 11:27:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-21 11:27:34,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-21 11:27:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-21 11:27:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-21 11:27:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-21 11:27:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-21 11:27:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-21 11:27:34,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-21 11:27:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-21 11:27:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-09-21 11:27:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-21 11:27:34,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-09-21 11:27:34,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-21 11:27:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-09-21 11:27:34,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-21 11:27:34,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-09-21 11:27:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-21 11:27:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2024-09-21 11:27:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2024-09-21 11:27:34,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2024-09-21 11:27:34,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-21 11:27:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2024-09-21 11:27:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2024-09-21 11:27:34,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2024-09-21 11:27:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:34,071 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 1222 proven. 3385 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-21 11:27:34,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:27:34,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518360454] [2024-09-21 11:27:34,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518360454] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:27:34,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138883284] [2024-09-21 11:27:34,071 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-21 11:27:34,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:27:34,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:27:34,073 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) [2024-09-21 11:27:34,074 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2024-09-21 11:27:34,191 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-21 11:27:34,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:27:34,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-09-21 11:27:34,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:27:34,404 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 1270 proven. 3337 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-21 11:27:34,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:27:36,200 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 1270 proven. 3337 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-21 11:27:36,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138883284] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:27:36,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:27:36,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 56 [2024-09-21 11:27:36,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101452819] [2024-09-21 11:27:36,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:27:36,201 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-09-21 11:27:36,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:27:36,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-09-21 11:27:36,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1288, Invalid=1792, Unknown=0, NotChecked=0, Total=3080 [2024-09-21 11:27:36,202 INFO L87 Difference]: Start difference. First operand 392 states and 393 transitions. Second operand has 56 states, 56 states have (on average 2.8035714285714284) internal successors, (157), 54 states have internal predecessors, (157), 49 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-21 11:27:36,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:27:36,482 INFO L93 Difference]: Finished difference Result 405 states and 407 transitions. [2024-09-21 11:27:36,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-09-21 11:27:36,482 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.8035714285714284) internal successors, (157), 54 states have internal predecessors, (157), 49 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Word has length 389 [2024-09-21 11:27:36,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:27:36,485 INFO L225 Difference]: With dead ends: 405 [2024-09-21 11:27:36,485 INFO L226 Difference]: Without dead ends: 403 [2024-09-21 11:27:36,485 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 974 GetRequests, 823 SyntacticMatches, 96 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2874 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1294, Invalid=1898, Unknown=0, NotChecked=0, Total=3192 [2024-09-21 11:27:36,485 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:27:36,486 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 120 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:27:36,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2024-09-21 11:27:36,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 399. [2024-09-21 11:27:36,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 297 states have (on average 1.0067340067340067) internal successors, (299), 298 states have internal predecessors, (299), 51 states have call successors, (51), 51 states have call predecessors, (51), 50 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-21 11:27:36,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 400 transitions. [2024-09-21 11:27:36,514 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 400 transitions. Word has length 389 [2024-09-21 11:27:36,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:27:36,515 INFO L474 AbstractCegarLoop]: Abstraction has 399 states and 400 transitions. [2024-09-21 11:27:36,515 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.8035714285714284) internal successors, (157), 54 states have internal predecessors, (157), 49 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-21 11:27:36,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:27:36,515 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 400 transitions. [2024-09-21 11:27:36,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2024-09-21 11:27:36,516 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:27:36,516 INFO L216 NwaCegarLoop]: trace histogram [49, 49, 49, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:27:36,529 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2024-09-21 11:27:36,720 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,96 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:27:36,720 INFO L399 AbstractCegarLoop]: === Iteration 98 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:27:36,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:27:36,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1821037685, now seen corresponding path program 95 times [2024-09-21 11:27:36,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:27:36,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465448061] [2024-09-21 11:27:36,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:27:36,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:27:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:27:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-21 11:27:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-21 11:27:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-21 11:27:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-21 11:27:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-21 11:27:39,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-21 11:27:39,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-21 11:27:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-21 11:27:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-21 11:27:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,854 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-21 11:27:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-21 11:27:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-21 11:27:39,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-21 11:27:39,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-21 11:27:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-21 11:27:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-21 11:27:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-21 11:27:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-21 11:27:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-21 11:27:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-21 11:27:39,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-21 11:27:39,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-21 11:27:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-21 11:27:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-21 11:27:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-21 11:27:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-21 11:27:39,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-21 11:27:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-21 11:27:39,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-21 11:27:39,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-21 11:27:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-21 11:27:39,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-21 11:27:39,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-09-21 11:27:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-21 11:27:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-09-21 11:27:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-21 11:27:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-09-21 11:27:39,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-21 11:27:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-09-21 11:27:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-21 11:27:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2024-09-21 11:27:39,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2024-09-21 11:27:39,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2024-09-21 11:27:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-21 11:27:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2024-09-21 11:27:39,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2024-09-21 11:27:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2024-09-21 11:27:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2024-09-21 11:27:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:39,892 INFO L134 CoverageAnalysis]: Checked inductivity of 9264 backedges. 3576 proven. 1176 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-09-21 11:27:39,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:27:39,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465448061] [2024-09-21 11:27:39,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465448061] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:27:39,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439577484] [2024-09-21 11:27:39,892 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-21 11:27:39,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:27:39,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:27:39,893 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-21 11:27:39,908 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2024-09-21 11:27:40,090 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2024-09-21 11:27:40,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:27:40,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-09-21 11:27:40,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:27:40,250 INFO L134 CoverageAnalysis]: Checked inductivity of 9264 backedges. 3576 proven. 1176 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-09-21 11:27:40,250 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:27:42,272 INFO L134 CoverageAnalysis]: Checked inductivity of 9264 backedges. 3576 proven. 1176 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-09-21 11:27:42,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439577484] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:27:42,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:27:42,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101, 101] total 102 [2024-09-21 11:27:42,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116334653] [2024-09-21 11:27:42,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:27:42,273 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2024-09-21 11:27:42,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:27:42,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2024-09-21 11:27:42,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2602, Invalid=7700, Unknown=0, NotChecked=0, Total=10302 [2024-09-21 11:27:42,276 INFO L87 Difference]: Start difference. First operand 399 states and 400 transitions. Second operand has 102 states, 102 states have (on average 1.5392156862745099) internal successors, (157), 102 states have internal predecessors, (157), 50 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-21 11:27:42,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:27:42,918 INFO L93 Difference]: Finished difference Result 555 states and 605 transitions. [2024-09-21 11:27:42,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2024-09-21 11:27:42,919 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 1.5392156862745099) internal successors, (157), 102 states have internal predecessors, (157), 50 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Word has length 396 [2024-09-21 11:27:42,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:27:42,921 INFO L225 Difference]: With dead ends: 555 [2024-09-21 11:27:42,921 INFO L226 Difference]: Without dead ends: 400 [2024-09-21 11:27:42,922 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 990 GetRequests, 792 SyntacticMatches, 98 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7533 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2602, Invalid=7700, Unknown=0, NotChecked=0, Total=10302 [2024-09-21 11:27:42,922 INFO L434 NwaCegarLoop]: 105 mSDtfsCounter, 0 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-21 11:27:42,922 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1233 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-21 11:27:42,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2024-09-21 11:27:42,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2024-09-21 11:27:42,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 298 states have (on average 1.0067114093959733) internal successors, (300), 299 states have internal predecessors, (300), 51 states have call successors, (51), 51 states have call predecessors, (51), 50 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-21 11:27:42,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 401 transitions. [2024-09-21 11:27:42,955 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 401 transitions. Word has length 396 [2024-09-21 11:27:42,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:27:42,955 INFO L474 AbstractCegarLoop]: Abstraction has 400 states and 401 transitions. [2024-09-21 11:27:42,956 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 1.5392156862745099) internal successors, (157), 102 states have internal predecessors, (157), 50 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-21 11:27:42,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:27:42,956 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 401 transitions. [2024-09-21 11:27:42,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2024-09-21 11:27:42,957 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:27:42,957 INFO L216 NwaCegarLoop]: trace histogram [49, 49, 49, 49, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:27:42,970 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2024-09-21 11:27:43,161 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2024-09-21 11:27:43,162 INFO L399 AbstractCegarLoop]: === Iteration 99 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:27:43,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:27:43,162 INFO L85 PathProgramCache]: Analyzing trace with hash -2080072681, now seen corresponding path program 96 times [2024-09-21 11:27:43,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:27:43,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615797790] [2024-09-21 11:27:43,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:27:43,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:27:43,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:27:44,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-21 11:27:44,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-21 11:27:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-21 11:27:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-21 11:27:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-21 11:27:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-21 11:27:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-21 11:27:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-21 11:27:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-21 11:27:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-21 11:27:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-21 11:27:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-21 11:27:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-21 11:27:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-21 11:27:44,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-21 11:27:44,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-21 11:27:44,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-21 11:27:44,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-21 11:27:44,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-21 11:27:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-21 11:27:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-21 11:27:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-21 11:27:44,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-21 11:27:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-21 11:27:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-21 11:27:44,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-21 11:27:44,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-21 11:27:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-21 11:27:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-21 11:27:44,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-21 11:27:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-21 11:27:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-21 11:27:44,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-21 11:27:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2024-09-21 11:27:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-21 11:27:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-09-21 11:27:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-21 11:27:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2024-09-21 11:27:44,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-21 11:27:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2024-09-21 11:27:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-21 11:27:44,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2024-09-21 11:27:44,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2024-09-21 11:27:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2024-09-21 11:27:44,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2024-09-21 11:27:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2024-09-21 11:27:44,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2024-09-21 11:27:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2024-09-21 11:27:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:44,984 INFO L134 CoverageAnalysis]: Checked inductivity of 9313 backedges. 1272 proven. 3529 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-09-21 11:27:44,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:27:44,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615797790] [2024-09-21 11:27:44,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615797790] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:27:44,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599892838] [2024-09-21 11:27:44,985 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-21 11:27:44,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:27:44,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:27:44,986 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-21 11:27:44,987 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2024-09-21 11:27:45,189 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2024-09-21 11:27:45,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:27:45,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 960 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-09-21 11:27:45,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:27:45,414 INFO L134 CoverageAnalysis]: Checked inductivity of 9313 backedges. 1321 proven. 3480 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-09-21 11:27:45,414 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:27:46,921 INFO L134 CoverageAnalysis]: Checked inductivity of 9313 backedges. 1321 proven. 3480 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-09-21 11:27:46,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599892838] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:27:46,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:27:46,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 57 [2024-09-21 11:27:46,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471482601] [2024-09-21 11:27:46,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:27:46,923 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-09-21 11:27:46,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:27:46,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-09-21 11:27:46,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1339, Invalid=1853, Unknown=0, NotChecked=0, Total=3192 [2024-09-21 11:27:46,923 INFO L87 Difference]: Start difference. First operand 400 states and 401 transitions. Second operand has 57 states, 57 states have (on average 2.807017543859649) internal successors, (160), 55 states have internal predecessors, (160), 50 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-21 11:27:47,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:27:47,201 INFO L93 Difference]: Finished difference Result 413 states and 415 transitions. [2024-09-21 11:27:47,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-09-21 11:27:47,202 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.807017543859649) internal successors, (160), 55 states have internal predecessors, (160), 50 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Word has length 397 [2024-09-21 11:27:47,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:27:47,204 INFO L225 Difference]: With dead ends: 413 [2024-09-21 11:27:47,204 INFO L226 Difference]: Without dead ends: 411 [2024-09-21 11:27:47,205 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 994 GetRequests, 840 SyntacticMatches, 98 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2983 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1345, Invalid=1961, Unknown=0, NotChecked=0, Total=3306 [2024-09-21 11:27:47,205 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:27:47,205 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 139 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:27:47,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2024-09-21 11:27:47,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 407. [2024-09-21 11:27:47,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 303 states have (on average 1.0066006600660067) internal successors, (305), 304 states have internal predecessors, (305), 52 states have call successors, (52), 52 states have call predecessors, (52), 51 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2024-09-21 11:27:47,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 408 transitions. [2024-09-21 11:27:47,237 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 408 transitions. Word has length 397 [2024-09-21 11:27:47,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:27:47,237 INFO L474 AbstractCegarLoop]: Abstraction has 407 states and 408 transitions. [2024-09-21 11:27:47,237 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.807017543859649) internal successors, (160), 55 states have internal predecessors, (160), 50 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-21 11:27:47,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:27:47,238 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 408 transitions. [2024-09-21 11:27:47,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2024-09-21 11:27:47,240 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:27:47,240 INFO L216 NwaCegarLoop]: trace histogram [50, 50, 50, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:27:47,253 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2024-09-21 11:27:47,444 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2024-09-21 11:27:47,445 INFO L399 AbstractCegarLoop]: === Iteration 100 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:27:47,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:27:47,445 INFO L85 PathProgramCache]: Analyzing trace with hash -440857427, now seen corresponding path program 97 times [2024-09-21 11:27:47,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:27:47,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550239441] [2024-09-21 11:27:47,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:27:47,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:27:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:27:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-21 11:27:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-21 11:27:50,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-21 11:27:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-21 11:27:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-21 11:27:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-21 11:27:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-21 11:27:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-21 11:27:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-21 11:27:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-21 11:27:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-21 11:27:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-21 11:27:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-21 11:27:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-21 11:27:50,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-21 11:27:50,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-21 11:27:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-21 11:27:50,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-21 11:27:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-21 11:27:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-21 11:27:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-21 11:27:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-21 11:27:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-21 11:27:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-21 11:27:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-21 11:27:50,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-21 11:27:50,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-21 11:27:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-21 11:27:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-21 11:27:50,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-21 11:27:50,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-21 11:27:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-21 11:27:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-21 11:27:50,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2024-09-21 11:27:50,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-21 11:27:50,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-09-21 11:27:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-21 11:27:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2024-09-21 11:27:50,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-21 11:27:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2024-09-21 11:27:50,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-21 11:27:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2024-09-21 11:27:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2024-09-21 11:27:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2024-09-21 11:27:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2024-09-21 11:27:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2024-09-21 11:27:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2024-09-21 11:27:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2024-09-21 11:27:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2024-09-21 11:27:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:50,916 INFO L134 CoverageAnalysis]: Checked inductivity of 9653 backedges. 3724 proven. 1225 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-09-21 11:27:50,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:27:50,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550239441] [2024-09-21 11:27:50,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550239441] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:27:50,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762551753] [2024-09-21 11:27:50,916 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-21 11:27:50,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:27:50,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:27:50,917 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-21 11:27:50,918 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2024-09-21 11:27:51,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:51,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 974 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-09-21 11:27:51,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:27:51,197 INFO L134 CoverageAnalysis]: Checked inductivity of 9653 backedges. 3724 proven. 1225 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-09-21 11:27:51,197 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:27:53,648 INFO L134 CoverageAnalysis]: Checked inductivity of 9653 backedges. 3724 proven. 1225 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-09-21 11:27:53,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762551753] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:27:53,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:27:53,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103, 103] total 104 [2024-09-21 11:27:53,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395626229] [2024-09-21 11:27:53,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:27:53,651 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2024-09-21 11:27:53,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:27:53,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2024-09-21 11:27:53,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2705, Invalid=8007, Unknown=0, NotChecked=0, Total=10712 [2024-09-21 11:27:53,654 INFO L87 Difference]: Start difference. First operand 407 states and 408 transitions. Second operand has 104 states, 104 states have (on average 1.5384615384615385) internal successors, (160), 104 states have internal predecessors, (160), 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) [2024-09-21 11:27:54,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:27:54,161 INFO L93 Difference]: Finished difference Result 566 states and 617 transitions. [2024-09-21 11:27:54,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2024-09-21 11:27:54,162 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 1.5384615384615385) internal successors, (160), 104 states have internal predecessors, (160), 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 404 [2024-09-21 11:27:54,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:27:54,164 INFO L225 Difference]: With dead ends: 566 [2024-09-21 11:27:54,164 INFO L226 Difference]: Without dead ends: 408 [2024-09-21 11:27:54,165 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1010 GetRequests, 808 SyntacticMatches, 100 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7837 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2705, Invalid=8007, Unknown=0, NotChecked=0, Total=10712 [2024-09-21 11:27:54,165 INFO L434 NwaCegarLoop]: 107 mSDtfsCounter, 0 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-21 11:27:54,166 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 832 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-21 11:27:54,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2024-09-21 11:27:54,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 408. [2024-09-21 11:27:54,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 304 states have (on average 1.006578947368421) internal successors, (306), 305 states have internal predecessors, (306), 52 states have call successors, (52), 52 states have call predecessors, (52), 51 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2024-09-21 11:27:54,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 409 transitions. [2024-09-21 11:27:54,197 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 409 transitions. Word has length 404 [2024-09-21 11:27:54,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:27:54,197 INFO L474 AbstractCegarLoop]: Abstraction has 408 states and 409 transitions. [2024-09-21 11:27:54,197 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 1.5384615384615385) internal successors, (160), 104 states have internal predecessors, (160), 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) [2024-09-21 11:27:54,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:27:54,197 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 409 transitions. [2024-09-21 11:27:54,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-09-21 11:27:54,198 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:27:54,199 INFO L216 NwaCegarLoop]: trace histogram [50, 50, 50, 50, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:27:54,213 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2024-09-21 11:27:54,399 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2024-09-21 11:27:54,400 INFO L399 AbstractCegarLoop]: === Iteration 101 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:27:54,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:27:54,400 INFO L85 PathProgramCache]: Analyzing trace with hash -582667975, now seen corresponding path program 98 times [2024-09-21 11:27:54,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:27:54,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662348890] [2024-09-21 11:27:54,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:27:54,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:27:54,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:27:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-21 11:27:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-21 11:27:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-21 11:27:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-21 11:27:56,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-21 11:27:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-21 11:27:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-21 11:27:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-21 11:27:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-21 11:27:56,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-21 11:27:56,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-21 11:27:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-21 11:27:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-21 11:27:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-21 11:27:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-21 11:27:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-21 11:27:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-21 11:27:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-21 11:27:56,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-21 11:27:56,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-21 11:27:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-21 11:27:56,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-21 11:27:56,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-21 11:27:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-21 11:27:56,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-21 11:27:56,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-21 11:27:56,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-21 11:27:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-21 11:27:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-21 11:27:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-21 11:27:56,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-21 11:27:56,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-21 11:27:56,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-21 11:27:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-21 11:27:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2024-09-21 11:27:56,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-21 11:27:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2024-09-21 11:27:56,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-21 11:27:56,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2024-09-21 11:27:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-21 11:27:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2024-09-21 11:27:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-21 11:27:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2024-09-21 11:27:56,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2024-09-21 11:27:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2024-09-21 11:27:56,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2024-09-21 11:27:56,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2024-09-21 11:27:56,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2024-09-21 11:27:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2024-09-21 11:27:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:27:56,203 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 1323 proven. 3676 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-09-21 11:27:56,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:27:56,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662348890] [2024-09-21 11:27:56,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662348890] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:27:56,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644484563] [2024-09-21 11:27:56,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 11:27:56,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:27:56,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:27:56,205 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-21 11:27:56,205 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2024-09-21 11:27:56,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 11:27:56,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:27:56,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 979 conjuncts, 103 conjuncts are in the unsatisfiable core [2024-09-21 11:27:56,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:27:56,528 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 1373 proven. 3626 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-09-21 11:27:56,528 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:27:58,534 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 1373 proven. 3626 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-09-21 11:27:58,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644484563] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:27:58,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:27:58,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 58 [2024-09-21 11:27:58,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439846063] [2024-09-21 11:27:58,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:27:58,536 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-09-21 11:27:58,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:27:58,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-09-21 11:27:58,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1391, Invalid=1915, Unknown=0, NotChecked=0, Total=3306 [2024-09-21 11:27:58,539 INFO L87 Difference]: Start difference. First operand 408 states and 409 transitions. Second operand has 58 states, 58 states have (on average 2.810344827586207) internal successors, (163), 56 states have internal predecessors, (163), 51 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-21 11:27:58,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:27:58,878 INFO L93 Difference]: Finished difference Result 421 states and 423 transitions. [2024-09-21 11:27:58,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-09-21 11:27:58,879 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.810344827586207) internal successors, (163), 56 states have internal predecessors, (163), 51 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Word has length 405 [2024-09-21 11:27:58,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:27:58,881 INFO L225 Difference]: With dead ends: 421 [2024-09-21 11:27:58,881 INFO L226 Difference]: Without dead ends: 419 [2024-09-21 11:27:58,882 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1014 GetRequests, 855 SyntacticMatches, 102 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3196 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1397, Invalid=2025, Unknown=0, NotChecked=0, Total=3422 [2024-09-21 11:27:58,882 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-21 11:27:58,889 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 108 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-21 11:27:58,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2024-09-21 11:27:58,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 415. [2024-09-21 11:27:58,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 309 states have (on average 1.006472491909385) internal successors, (311), 310 states have internal predecessors, (311), 53 states have call successors, (53), 53 states have call predecessors, (53), 52 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2024-09-21 11:27:58,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 416 transitions. [2024-09-21 11:27:58,958 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 416 transitions. Word has length 405 [2024-09-21 11:27:58,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:27:58,961 INFO L474 AbstractCegarLoop]: Abstraction has 415 states and 416 transitions. [2024-09-21 11:27:58,961 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.810344827586207) internal successors, (163), 56 states have internal predecessors, (163), 51 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-21 11:27:58,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:27:58,961 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 416 transitions. [2024-09-21 11:27:58,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2024-09-21 11:27:58,964 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:27:58,964 INFO L216 NwaCegarLoop]: trace histogram [51, 51, 51, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:27:58,977 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2024-09-21 11:27:59,168 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2024-09-21 11:27:59,168 INFO L399 AbstractCegarLoop]: === Iteration 102 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:27:59,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:27:59,169 INFO L85 PathProgramCache]: Analyzing trace with hash 2139016523, now seen corresponding path program 99 times [2024-09-21 11:27:59,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:27:59,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270199856] [2024-09-21 11:27:59,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:27:59,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:27:59,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:28:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-21 11:28:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-21 11:28:02,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-21 11:28:02,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-21 11:28:02,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-21 11:28:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-21 11:28:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-21 11:28:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-21 11:28:02,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-21 11:28:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-21 11:28:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-21 11:28:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-21 11:28:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-21 11:28:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-21 11:28:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-21 11:28:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-21 11:28:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-21 11:28:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-21 11:28:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-21 11:28:02,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-21 11:28:02,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-21 11:28:02,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-21 11:28:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-21 11:28:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-21 11:28:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-21 11:28:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-21 11:28:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-21 11:28:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,628 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-21 11:28:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-21 11:28:02,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-21 11:28:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-21 11:28:02,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-21 11:28:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-21 11:28:02,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-21 11:28:02,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2024-09-21 11:28:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-21 11:28:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2024-09-21 11:28:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-21 11:28:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2024-09-21 11:28:02,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-21 11:28:02,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2024-09-21 11:28:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-21 11:28:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2024-09-21 11:28:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2024-09-21 11:28:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2024-09-21 11:28:02,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2024-09-21 11:28:02,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2024-09-21 11:28:02,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2024-09-21 11:28:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2024-09-21 11:28:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2024-09-21 11:28:02,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:02,649 INFO L134 CoverageAnalysis]: Checked inductivity of 10050 backedges. 3875 proven. 1275 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-09-21 11:28:02,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:28:02,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270199856] [2024-09-21 11:28:02,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270199856] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:28:02,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766604101] [2024-09-21 11:28:02,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-21 11:28:02,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:28:02,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:28:02,652 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-21 11:28:02,652 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2024-09-21 11:28:02,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2024-09-21 11:28:02,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:28:02,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-09-21 11:28:02,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:28:03,097 INFO L134 CoverageAnalysis]: Checked inductivity of 10050 backedges. 3875 proven. 1275 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-09-21 11:28:03,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:28:05,390 INFO L134 CoverageAnalysis]: Checked inductivity of 10050 backedges. 3875 proven. 1275 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-09-21 11:28:05,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766604101] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:28:05,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:28:05,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105, 105] total 106 [2024-09-21 11:28:05,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979266609] [2024-09-21 11:28:05,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:28:05,391 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2024-09-21 11:28:05,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:28:05,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2024-09-21 11:28:05,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2810, Invalid=8320, Unknown=0, NotChecked=0, Total=11130 [2024-09-21 11:28:05,394 INFO L87 Difference]: Start difference. First operand 415 states and 416 transitions. Second operand has 106 states, 106 states have (on average 1.5377358490566038) internal successors, (163), 106 states have internal predecessors, (163), 52 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-09-21 11:28:05,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:28:05,871 INFO L93 Difference]: Finished difference Result 577 states and 629 transitions. [2024-09-21 11:28:05,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2024-09-21 11:28:05,874 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 1.5377358490566038) internal successors, (163), 106 states have internal predecessors, (163), 52 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Word has length 412 [2024-09-21 11:28:05,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:28:05,877 INFO L225 Difference]: With dead ends: 577 [2024-09-21 11:28:05,877 INFO L226 Difference]: Without dead ends: 416 [2024-09-21 11:28:05,878 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1030 GetRequests, 824 SyntacticMatches, 102 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8147 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2810, Invalid=8320, Unknown=0, NotChecked=0, Total=11130 [2024-09-21 11:28:05,878 INFO L434 NwaCegarLoop]: 109 mSDtfsCounter, 0 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-21 11:28:05,878 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 778 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-21 11:28:05,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2024-09-21 11:28:05,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2024-09-21 11:28:05,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 310 states have (on average 1.0064516129032257) internal successors, (312), 311 states have internal predecessors, (312), 53 states have call successors, (53), 53 states have call predecessors, (53), 52 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2024-09-21 11:28:05,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 417 transitions. [2024-09-21 11:28:05,910 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 417 transitions. Word has length 412 [2024-09-21 11:28:05,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:28:05,910 INFO L474 AbstractCegarLoop]: Abstraction has 416 states and 417 transitions. [2024-09-21 11:28:05,910 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 1.5377358490566038) internal successors, (163), 106 states have internal predecessors, (163), 52 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-09-21 11:28:05,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:28:05,911 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 417 transitions. [2024-09-21 11:28:05,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2024-09-21 11:28:05,912 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:28:05,912 INFO L216 NwaCegarLoop]: trace histogram [51, 51, 51, 51, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:28:05,926 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2024-09-21 11:28:06,116 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2024-09-21 11:28:06,116 INFO L399 AbstractCegarLoop]: === Iteration 103 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:28:06,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:28:06,117 INFO L85 PathProgramCache]: Analyzing trace with hash -535583273, now seen corresponding path program 100 times [2024-09-21 11:28:06,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:28:06,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784660406] [2024-09-21 11:28:06,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:28:06,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:28:06,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:28:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-21 11:28:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-21 11:28:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-21 11:28:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-21 11:28:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-21 11:28:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-21 11:28:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-21 11:28:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-21 11:28:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-21 11:28:07,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-21 11:28:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-21 11:28:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-21 11:28:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-21 11:28:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-21 11:28:07,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-21 11:28:07,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-21 11:28:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-21 11:28:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-21 11:28:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-21 11:28:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-21 11:28:07,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-21 11:28:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-21 11:28:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-21 11:28:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-21 11:28:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-21 11:28:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-21 11:28:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-21 11:28:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-21 11:28:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-21 11:28:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-21 11:28:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-21 11:28:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-21 11:28:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-21 11:28:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-09-21 11:28:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-21 11:28:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2024-09-21 11:28:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-21 11:28:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2024-09-21 11:28:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-21 11:28:07,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2024-09-21 11:28:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-21 11:28:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2024-09-21 11:28:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-21 11:28:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2024-09-21 11:28:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2024-09-21 11:28:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2024-09-21 11:28:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2024-09-21 11:28:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2024-09-21 11:28:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2024-09-21 11:28:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:07,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2024-09-21 11:28:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:08,002 INFO L134 CoverageAnalysis]: Checked inductivity of 10101 backedges. 1375 proven. 3826 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-09-21 11:28:08,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:28:08,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784660406] [2024-09-21 11:28:08,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784660406] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:28:08,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89818279] [2024-09-21 11:28:08,003 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-21 11:28:08,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:28:08,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:28:08,004 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-21 11:28:08,005 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2024-09-21 11:28:08,199 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-21 11:28:08,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:28:08,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 998 conjuncts, 108 conjuncts are in the unsatisfiable core [2024-09-21 11:28:08,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:28:08,442 INFO L134 CoverageAnalysis]: Checked inductivity of 10101 backedges. 1426 proven. 3775 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-09-21 11:28:08,442 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:28:10,337 INFO L134 CoverageAnalysis]: Checked inductivity of 10101 backedges. 1426 proven. 3775 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-09-21 11:28:10,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89818279] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:28:10,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:28:10,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 59 [2024-09-21 11:28:10,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445239494] [2024-09-21 11:28:10,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:28:10,337 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-09-21 11:28:10,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:28:10,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-09-21 11:28:10,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1444, Invalid=1978, Unknown=0, NotChecked=0, Total=3422 [2024-09-21 11:28:10,338 INFO L87 Difference]: Start difference. First operand 416 states and 417 transitions. Second operand has 59 states, 59 states have (on average 2.8135593220338984) internal successors, (166), 57 states have internal predecessors, (166), 52 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-09-21 11:28:10,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:28:10,629 INFO L93 Difference]: Finished difference Result 429 states and 431 transitions. [2024-09-21 11:28:10,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-09-21 11:28:10,629 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.8135593220338984) internal successors, (166), 57 states have internal predecessors, (166), 52 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Word has length 413 [2024-09-21 11:28:10,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:28:10,632 INFO L225 Difference]: With dead ends: 429 [2024-09-21 11:28:10,632 INFO L226 Difference]: Without dead ends: 427 [2024-09-21 11:28:10,632 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1034 GetRequests, 874 SyntacticMatches, 102 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3207 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1450, Invalid=2090, Unknown=0, NotChecked=0, Total=3540 [2024-09-21 11:28:10,632 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:28:10,632 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 134 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:28:10,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2024-09-21 11:28:10,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 423. [2024-09-21 11:28:10,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 315 states have (on average 1.0063492063492063) internal successors, (317), 316 states have internal predecessors, (317), 54 states have call successors, (54), 54 states have call predecessors, (54), 53 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2024-09-21 11:28:10,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 424 transitions. [2024-09-21 11:28:10,665 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 424 transitions. Word has length 413 [2024-09-21 11:28:10,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:28:10,665 INFO L474 AbstractCegarLoop]: Abstraction has 423 states and 424 transitions. [2024-09-21 11:28:10,665 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.8135593220338984) internal successors, (166), 57 states have internal predecessors, (166), 52 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-09-21 11:28:10,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:28:10,665 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 424 transitions. [2024-09-21 11:28:10,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2024-09-21 11:28:10,666 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:28:10,667 INFO L216 NwaCegarLoop]: trace histogram [52, 52, 52, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:28:10,680 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2024-09-21 11:28:10,870 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2024-09-21 11:28:10,871 INFO L399 AbstractCegarLoop]: === Iteration 104 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:28:10,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:28:10,871 INFO L85 PathProgramCache]: Analyzing trace with hash 2118093549, now seen corresponding path program 101 times [2024-09-21 11:28:10,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:28:10,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317460137] [2024-09-21 11:28:10,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:28:10,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:28:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:28:14,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-21 11:28:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-21 11:28:14,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-21 11:28:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-21 11:28:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-21 11:28:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-21 11:28:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-21 11:28:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-21 11:28:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-21 11:28:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-21 11:28:14,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-21 11:28:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-21 11:28:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-21 11:28:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-21 11:28:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-21 11:28:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-21 11:28:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-21 11:28:14,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-21 11:28:14,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-21 11:28:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-21 11:28:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-21 11:28:14,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-21 11:28:14,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-21 11:28:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-21 11:28:14,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-21 11:28:14,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-21 11:28:14,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-21 11:28:14,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-21 11:28:14,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-21 11:28:14,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-21 11:28:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-21 11:28:14,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-21 11:28:14,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-21 11:28:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-09-21 11:28:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-21 11:28:14,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2024-09-21 11:28:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-21 11:28:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2024-09-21 11:28:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-21 11:28:14,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2024-09-21 11:28:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-21 11:28:14,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2024-09-21 11:28:14,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-21 11:28:14,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2024-09-21 11:28:14,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2024-09-21 11:28:14,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2024-09-21 11:28:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2024-09-21 11:28:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2024-09-21 11:28:14,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2024-09-21 11:28:14,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2024-09-21 11:28:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2024-09-21 11:28:14,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:14,052 INFO L134 CoverageAnalysis]: Checked inductivity of 10455 backedges. 4029 proven. 1326 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2024-09-21 11:28:14,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:28:14,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317460137] [2024-09-21 11:28:14,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317460137] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:28:14,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763408210] [2024-09-21 11:28:14,053 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-21 11:28:14,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:28:14,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:28:14,055 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-21 11:28:14,056 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2024-09-21 11:28:14,239 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2024-09-21 11:28:14,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:28:14,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 1012 conjuncts, 106 conjuncts are in the unsatisfiable core [2024-09-21 11:28:14,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:28:14,454 INFO L134 CoverageAnalysis]: Checked inductivity of 10455 backedges. 4029 proven. 1326 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2024-09-21 11:28:14,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:28:16,839 INFO L134 CoverageAnalysis]: Checked inductivity of 10455 backedges. 4029 proven. 1326 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2024-09-21 11:28:16,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763408210] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:28:16,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:28:16,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107, 107] total 108 [2024-09-21 11:28:16,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512146275] [2024-09-21 11:28:16,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:28:16,841 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2024-09-21 11:28:16,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:28:16,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2024-09-21 11:28:16,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2917, Invalid=8639, Unknown=0, NotChecked=0, Total=11556 [2024-09-21 11:28:16,842 INFO L87 Difference]: Start difference. First operand 423 states and 424 transitions. Second operand has 108 states, 108 states have (on average 1.537037037037037) internal successors, (166), 108 states have internal predecessors, (166), 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) [2024-09-21 11:28:17,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:28:17,469 INFO L93 Difference]: Finished difference Result 588 states and 641 transitions. [2024-09-21 11:28:17,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2024-09-21 11:28:17,473 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 1.537037037037037) internal successors, (166), 108 states have internal predecessors, (166), 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 420 [2024-09-21 11:28:17,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:28:17,476 INFO L225 Difference]: With dead ends: 588 [2024-09-21 11:28:17,476 INFO L226 Difference]: Without dead ends: 424 [2024-09-21 11:28:17,477 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1050 GetRequests, 840 SyntacticMatches, 104 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8463 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2917, Invalid=8639, Unknown=0, NotChecked=0, Total=11556 [2024-09-21 11:28:17,477 INFO L434 NwaCegarLoop]: 111 mSDtfsCounter, 0 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 1484 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-21 11:28:17,477 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1192 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1484 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-21 11:28:17,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2024-09-21 11:28:17,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 424. [2024-09-21 11:28:17,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 316 states have (on average 1.0063291139240507) internal successors, (318), 317 states have internal predecessors, (318), 54 states have call successors, (54), 54 states have call predecessors, (54), 53 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2024-09-21 11:28:17,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 425 transitions. [2024-09-21 11:28:17,511 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 425 transitions. Word has length 420 [2024-09-21 11:28:17,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:28:17,511 INFO L474 AbstractCegarLoop]: Abstraction has 424 states and 425 transitions. [2024-09-21 11:28:17,511 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 1.537037037037037) internal successors, (166), 108 states have internal predecessors, (166), 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) [2024-09-21 11:28:17,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:28:17,511 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 425 transitions. [2024-09-21 11:28:17,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2024-09-21 11:28:17,513 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:28:17,513 INFO L216 NwaCegarLoop]: trace histogram [52, 52, 52, 52, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:28:17,527 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2024-09-21 11:28:17,716 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2024-09-21 11:28:17,717 INFO L399 AbstractCegarLoop]: === Iteration 105 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:28:17,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:28:17,717 INFO L85 PathProgramCache]: Analyzing trace with hash -571926663, now seen corresponding path program 102 times [2024-09-21 11:28:17,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:28:17,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137516525] [2024-09-21 11:28:17,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:28:17,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:28:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:28:19,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-21 11:28:19,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-21 11:28:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-21 11:28:19,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-21 11:28:19,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-21 11:28:19,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-21 11:28:19,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-21 11:28:19,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-21 11:28:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-21 11:28:19,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-21 11:28:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-21 11:28:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-21 11:28:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-21 11:28:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-21 11:28:19,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-21 11:28:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-21 11:28:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-21 11:28:19,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-21 11:28:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-21 11:28:19,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-21 11:28:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-21 11:28:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-21 11:28:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-21 11:28:19,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-21 11:28:19,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-21 11:28:19,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-21 11:28:19,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-21 11:28:19,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-21 11:28:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-21 11:28:19,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-21 11:28:19,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-09-21 11:28:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-21 11:28:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-09-21 11:28:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-21 11:28:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-09-21 11:28:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-21 11:28:19,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2024-09-21 11:28:19,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-21 11:28:19,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2024-09-21 11:28:19,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-21 11:28:19,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2024-09-21 11:28:19,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-09-21 11:28:19,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2024-09-21 11:28:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-21 11:28:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2024-09-21 11:28:19,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2024-09-21 11:28:19,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2024-09-21 11:28:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2024-09-21 11:28:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2024-09-21 11:28:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2024-09-21 11:28:19,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2024-09-21 11:28:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:19,815 INFO L134 CoverageAnalysis]: Checked inductivity of 10507 backedges. 1428 proven. 3979 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2024-09-21 11:28:19,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:28:19,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137516525] [2024-09-21 11:28:19,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137516525] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:28:19,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988245235] [2024-09-21 11:28:19,815 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-21 11:28:19,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:28:19,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:28:19,817 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-21 11:28:19,818 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2024-09-21 11:28:20,027 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2024-09-21 11:28:20,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:28:20,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-09-21 11:28:20,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:28:20,211 INFO L134 CoverageAnalysis]: Checked inductivity of 10507 backedges. 1480 proven. 3927 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2024-09-21 11:28:20,212 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:28:21,821 INFO L134 CoverageAnalysis]: Checked inductivity of 10507 backedges. 1480 proven. 3927 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2024-09-21 11:28:21,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988245235] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:28:21,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:28:21,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57, 57] total 60 [2024-09-21 11:28:21,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290777570] [2024-09-21 11:28:21,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:28:21,822 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-09-21 11:28:21,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:28:21,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-09-21 11:28:21,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1498, Invalid=2042, Unknown=0, NotChecked=0, Total=3540 [2024-09-21 11:28:21,823 INFO L87 Difference]: Start difference. First operand 424 states and 425 transitions. Second operand has 60 states, 60 states have (on average 2.816666666666667) internal successors, (169), 58 states have internal predecessors, (169), 53 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-09-21 11:28:22,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:28:22,114 INFO L93 Difference]: Finished difference Result 437 states and 439 transitions. [2024-09-21 11:28:22,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-09-21 11:28:22,114 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.816666666666667) internal successors, (169), 58 states have internal predecessors, (169), 53 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Word has length 421 [2024-09-21 11:28:22,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:28:22,116 INFO L225 Difference]: With dead ends: 437 [2024-09-21 11:28:22,116 INFO L226 Difference]: Without dead ends: 435 [2024-09-21 11:28:22,117 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1054 GetRequests, 891 SyntacticMatches, 104 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3322 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1504, Invalid=2156, Unknown=0, NotChecked=0, Total=3660 [2024-09-21 11:28:22,117 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:28:22,117 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 103 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:28:22,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2024-09-21 11:28:22,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 431. [2024-09-21 11:28:22,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 321 states have (on average 1.0062305295950156) internal successors, (323), 322 states have internal predecessors, (323), 55 states have call successors, (55), 55 states have call predecessors, (55), 54 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2024-09-21 11:28:22,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 432 transitions. [2024-09-21 11:28:22,151 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 432 transitions. Word has length 421 [2024-09-21 11:28:22,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:28:22,151 INFO L474 AbstractCegarLoop]: Abstraction has 431 states and 432 transitions. [2024-09-21 11:28:22,152 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.816666666666667) internal successors, (169), 58 states have internal predecessors, (169), 53 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-09-21 11:28:22,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:28:22,152 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 432 transitions. [2024-09-21 11:28:22,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2024-09-21 11:28:22,153 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:28:22,153 INFO L216 NwaCegarLoop]: trace histogram [53, 53, 53, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:28:22,167 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2024-09-21 11:28:22,357 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,104 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:28:22,357 INFO L399 AbstractCegarLoop]: === Iteration 106 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:28:22,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:28:22,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1477926667, now seen corresponding path program 103 times [2024-09-21 11:28:22,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:28:22,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165066238] [2024-09-21 11:28:22,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:28:22,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:28:22,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:28:25,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-21 11:28:25,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-21 11:28:25,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-21 11:28:25,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-21 11:28:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-21 11:28:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-21 11:28:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-21 11:28:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-21 11:28:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-21 11:28:25,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-21 11:28:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-21 11:28:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-21 11:28:25,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-21 11:28:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-21 11:28:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-21 11:28:25,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-21 11:28:25,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-21 11:28:25,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-21 11:28:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-21 11:28:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-21 11:28:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-21 11:28:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-21 11:28:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-21 11:28:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-21 11:28:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-21 11:28:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-21 11:28:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-21 11:28:25,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-21 11:28:25,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-21 11:28:25,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-21 11:28:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-09-21 11:28:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-21 11:28:25,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-09-21 11:28:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-21 11:28:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-09-21 11:28:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-21 11:28:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2024-09-21 11:28:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-21 11:28:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2024-09-21 11:28:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-21 11:28:25,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2024-09-21 11:28:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-09-21 11:28:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2024-09-21 11:28:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-21 11:28:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2024-09-21 11:28:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2024-09-21 11:28:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2024-09-21 11:28:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2024-09-21 11:28:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2024-09-21 11:28:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2024-09-21 11:28:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2024-09-21 11:28:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2024-09-21 11:28:25,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:25,905 INFO L134 CoverageAnalysis]: Checked inductivity of 10868 backedges. 4186 proven. 1378 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2024-09-21 11:28:25,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:28:25,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165066238] [2024-09-21 11:28:25,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165066238] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-21 11:28:25,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691026926] [2024-09-21 11:28:25,905 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-21 11:28:25,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:28:25,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:28:25,907 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-21 11:28:25,907 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2024-09-21 11:28:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:28:26,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 1031 conjuncts, 108 conjuncts are in the unsatisfiable core [2024-09-21 11:28:26,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:28:26,226 INFO L134 CoverageAnalysis]: Checked inductivity of 10868 backedges. 4186 proven. 1378 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2024-09-21 11:28:26,226 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:28:28,726 INFO L134 CoverageAnalysis]: Checked inductivity of 10868 backedges. 4186 proven. 1378 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2024-09-21 11:28:28,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691026926] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:28:28,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-21 11:28:28,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109, 109] total 110 [2024-09-21 11:28:28,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445763875] [2024-09-21 11:28:28,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-21 11:28:28,726 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2024-09-21 11:28:28,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:28:28,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2024-09-21 11:28:28,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3026, Invalid=8964, Unknown=0, NotChecked=0, Total=11990 [2024-09-21 11:28:28,728 INFO L87 Difference]: Start difference. First operand 431 states and 432 transitions. Second operand has 110 states, 110 states have (on average 1.5363636363636364) internal successors, (169), 110 states have internal predecessors, (169), 54 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2024-09-21 11:28:29,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:28:29,507 INFO L93 Difference]: Finished difference Result 599 states and 653 transitions. [2024-09-21 11:28:29,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2024-09-21 11:28:29,508 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 1.5363636363636364) internal successors, (169), 110 states have internal predecessors, (169), 54 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Word has length 428 [2024-09-21 11:28:29,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:28:29,511 INFO L225 Difference]: With dead ends: 599 [2024-09-21 11:28:29,511 INFO L226 Difference]: Without dead ends: 432 [2024-09-21 11:28:29,516 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1070 GetRequests, 856 SyntacticMatches, 106 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8785 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=3026, Invalid=8964, Unknown=0, NotChecked=0, Total=11990 [2024-09-21 11:28:29,516 INFO L434 NwaCegarLoop]: 113 mSDtfsCounter, 0 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 1268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-21 11:28:29,516 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 918 Invalid, 1268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-21 11:28:29,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2024-09-21 11:28:29,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 432. [2024-09-21 11:28:29,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 322 states have (on average 1.0062111801242235) internal successors, (324), 323 states have internal predecessors, (324), 55 states have call successors, (55), 55 states have call predecessors, (55), 54 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2024-09-21 11:28:29,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 433 transitions. [2024-09-21 11:28:29,561 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 433 transitions. Word has length 428 [2024-09-21 11:28:29,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:28:29,561 INFO L474 AbstractCegarLoop]: Abstraction has 432 states and 433 transitions. [2024-09-21 11:28:29,562 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 1.5363636363636364) internal successors, (169), 110 states have internal predecessors, (169), 54 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2024-09-21 11:28:29,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:28:29,562 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 433 transitions. [2024-09-21 11:28:29,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2024-09-21 11:28:29,563 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:28:29,563 INFO L216 NwaCegarLoop]: trace histogram [53, 53, 53, 53, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:28:29,576 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2024-09-21 11:28:29,766 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,105 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:28:29,767 INFO L399 AbstractCegarLoop]: === Iteration 107 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:28:29,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:28:29,767 INFO L85 PathProgramCache]: Analyzing trace with hash -2132697193, now seen corresponding path program 104 times [2024-09-21 11:28:29,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:28:29,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444210972] [2024-09-21 11:28:29,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:28:29,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:28:29,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat