./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/up.i --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e378df2c Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-invgen/up.i -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ff5c10c83c8d29dcc2c2798035fa2754df224d2313ad9c91b6ee5bb6ca3d9a9f --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.contract-modifies-e378df2-m [2024-10-15 14:17:49,253 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 14:17:49,310 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-15 14:17:49,314 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 14:17:49,314 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 14:17:49,340 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 14:17:49,341 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 14:17:49,342 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 14:17:49,342 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 14:17:49,343 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 14:17:49,343 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 14:17:49,344 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 14:17:49,344 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 14:17:49,345 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 14:17:49,345 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 14:17:49,345 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 14:17:49,346 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 14:17:49,346 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 14:17:49,346 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 14:17:49,347 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 14:17:49,347 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 14:17:49,348 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 14:17:49,348 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 14:17:49,348 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 14:17:49,349 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 14:17:49,349 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 14:17:49,349 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 14:17:49,353 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 14:17:49,353 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 14:17:49,354 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 14:17:49,354 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 14:17:49,354 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 14:17:49,354 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 14:17:49,355 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 14:17:49,355 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 14:17:49,355 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 14:17:49,355 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 14:17:49,356 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 14:17:49,356 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 14:17:49,356 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 14:17:49,356 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 14:17:49,357 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 14:17:49,357 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff5c10c83c8d29dcc2c2798035fa2754df224d2313ad9c91b6ee5bb6ca3d9a9f Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-10-15 14:17:49,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 14:17:49,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 14:17:49,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 14:17:49,615 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 14:17:49,616 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 14:17:49,617 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-invgen/up.i [2024-10-15 14:17:50,990 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 14:17:51,174 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 14:17:51,174 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/up.i [2024-10-15 14:17:51,182 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/1b139ca02/b54038ef076d47afbd63008f3df3b3a5/FLAG106f980bf [2024-10-15 14:17:51,198 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/1b139ca02/b54038ef076d47afbd63008f3df3b3a5 [2024-10-15 14:17:51,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 14:17:51,201 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 14:17:51,203 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 14:17:51,204 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 14:17:51,209 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 14:17:51,210 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:17:51" (1/1) ... [2024-10-15 14:17:51,211 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2580e63b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:17:51, skipping insertion in model container [2024-10-15 14:17:51,211 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:17:51" (1/1) ... [2024-10-15 14:17:51,231 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 14:17:51,398 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/up.i[893,906] [2024-10-15 14:17:51,414 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 14:17:51,421 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 14:17:51,448 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/up.i[893,906] [2024-10-15 14:17:51,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 14:17:51,463 INFO L204 MainTranslator]: Completed translation [2024-10-15 14:17:51,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:17:51 WrapperNode [2024-10-15 14:17:51,464 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 14:17:51,465 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 14:17:51,465 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 14:17:51,465 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 14:17:51,471 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:17:51" (1/1) ... [2024-10-15 14:17:51,477 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:17:51" (1/1) ... [2024-10-15 14:17:51,484 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-10-15 14:17:51,485 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 14:17:51,485 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 14:17:51,485 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 14:17:51,485 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 14:17:51,496 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:17:51" (1/1) ... [2024-10-15 14:17:51,496 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:17:51" (1/1) ... [2024-10-15 14:17:51,497 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:17:51" (1/1) ... [2024-10-15 14:17:51,508 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]. [2024-10-15 14:17:51,508 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:17:51" (1/1) ... [2024-10-15 14:17:51,508 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:17:51" (1/1) ... [2024-10-15 14:17:51,521 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:17:51" (1/1) ... [2024-10-15 14:17:51,524 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:17:51" (1/1) ... [2024-10-15 14:17:51,525 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:17:51" (1/1) ... [2024-10-15 14:17:51,525 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:17:51" (1/1) ... [2024-10-15 14:17:51,527 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 14:17:51,528 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 14:17:51,528 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 14:17:51,528 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 14:17:51,529 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:17:51" (1/1) ... [2024-10-15 14:17:51,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 14:17:51,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:51,558 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) [2024-10-15 14:17:51,563 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 [2024-10-15 14:17:51,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 14:17:51,610 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-10-15 14:17:51,610 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-10-15 14:17:51,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 14:17:51,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-10-15 14:17:51,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-10-15 14:17:51,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 14:17:51,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 14:17:51,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-15 14:17:51,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-15 14:17:51,678 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 14:17:51,684 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 14:17:51,852 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-10-15 14:17:51,852 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 14:17:51,878 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 14:17:51,879 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-15 14:17:51,879 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:17:51 BoogieIcfgContainer [2024-10-15 14:17:51,880 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 14:17:51,883 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 14:17:51,883 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 14:17:51,887 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 14:17:51,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:17:51" (1/3) ... [2024-10-15 14:17:51,888 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79c93dad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:17:51, skipping insertion in model container [2024-10-15 14:17:51,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:17:51" (2/3) ... [2024-10-15 14:17:51,889 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79c93dad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:17:51, skipping insertion in model container [2024-10-15 14:17:51,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:17:51" (3/3) ... [2024-10-15 14:17:51,892 INFO L112 eAbstractionObserver]: Analyzing ICFG up.i [2024-10-15 14:17:51,904 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 14:17:51,904 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-15 14:17:51,953 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 14:17:51,959 INFO L333 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;@176c7cf4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 14:17:51,959 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-15 14:17:51,963 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) [2024-10-15 14:17:51,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-15 14:17:51,971 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:51,971 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:51,972 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:51,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:51,979 INFO L85 PathProgramCache]: Analyzing trace with hash -2044494321, now seen corresponding path program 1 times [2024-10-15 14:17:51,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:51,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230192044] [2024-10-15 14:17:51,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:51,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:52,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:52,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:17:52,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:52,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230192044] [2024-10-15 14:17:52,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230192044] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 14:17:52,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 14:17:52,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 14:17:52,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898515286] [2024-10-15 14:17:52,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 14:17:52,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-15 14:17:52,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:52,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-15 14:17:52,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-15 14:17:52,129 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) [2024-10-15 14:17:52,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:52,147 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2024-10-15 14:17:52,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-15 14:17:52,149 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 [2024-10-15 14:17:52,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:52,155 INFO L225 Difference]: With dead ends: 34 [2024-10-15 14:17:52,155 INFO L226 Difference]: Without dead ends: 16 [2024-10-15 14:17:52,157 INFO L431 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 [2024-10-15 14:17:52,160 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:52,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 14:17:52,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-10-15 14:17:52,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-10-15 14:17:52,187 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) [2024-10-15 14:17:52,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2024-10-15 14:17:52,190 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2024-10-15 14:17:52,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:52,190 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2024-10-15 14:17:52,191 INFO L472 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) [2024-10-15 14:17:52,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:52,191 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2024-10-15 14:17:52,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-15 14:17:52,192 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:52,192 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:52,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 14:17:52,193 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:52,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:52,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1299541749, now seen corresponding path program 1 times [2024-10-15 14:17:52,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:52,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152391323] [2024-10-15 14:17:52,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:52,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:52,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:52,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:17:52,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:52,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152391323] [2024-10-15 14:17:52,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152391323] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 14:17:52,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 14:17:52,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 14:17:52,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489891395] [2024-10-15 14:17:52,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 14:17:52,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 14:17:52,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:52,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 14:17:52,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-15 14:17:52,351 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) [2024-10-15 14:17:52,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:52,378 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2024-10-15 14:17:52,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 14:17:52,379 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 [2024-10-15 14:17:52,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:52,379 INFO L225 Difference]: With dead ends: 28 [2024-10-15 14:17:52,380 INFO L226 Difference]: Without dead ends: 17 [2024-10-15 14:17:52,380 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-15 14:17:52,381 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:52,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 14:17:52,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-10-15 14:17:52,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-10-15 14:17:52,386 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) [2024-10-15 14:17:52,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2024-10-15 14:17:52,387 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 12 [2024-10-15 14:17:52,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:52,388 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-10-15 14:17:52,388 INFO L472 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) [2024-10-15 14:17:52,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:52,389 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2024-10-15 14:17:52,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-15 14:17:52,389 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:52,389 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:52,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-15 14:17:52,390 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:52,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:52,391 INFO L85 PathProgramCache]: Analyzing trace with hash 546941463, now seen corresponding path program 1 times [2024-10-15 14:17:52,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:52,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18983453] [2024-10-15 14:17:52,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:52,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:52,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:52,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:17:52,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:52,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18983453] [2024-10-15 14:17:52,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18983453] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:52,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731598250] [2024-10-15 14:17:52,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:52,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:52,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:52,585 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) [2024-10-15 14:17:52,586 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 14:17:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:52,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 14:17:52,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:52,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:17:52,776 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 14:17:52,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731598250] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 14:17:52,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 14:17:52,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2024-10-15 14:17:52,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745662666] [2024-10-15 14:17:52,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 14:17:52,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-15 14:17:52,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:52,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-15 14:17:52,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-15 14:17:52,782 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) [2024-10-15 14:17:52,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:52,831 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2024-10-15 14:17:52,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-15 14:17:52,832 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 [2024-10-15 14:17:52,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:52,834 INFO L225 Difference]: With dead ends: 29 [2024-10-15 14:17:52,834 INFO L226 Difference]: Without dead ends: 27 [2024-10-15 14:17:52,835 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-10-15 14:17:52,836 INFO L432 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 [2024-10-15 14:17:52,838 INFO L433 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] [2024-10-15 14:17:52,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-10-15 14:17:52,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2024-10-15 14:17:52,853 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) [2024-10-15 14:17:52,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2024-10-15 14:17:52,854 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 13 [2024-10-15 14:17:52,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:52,854 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2024-10-15 14:17:52,854 INFO L472 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) [2024-10-15 14:17:52,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:52,855 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2024-10-15 14:17:52,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-15 14:17:52,855 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:52,856 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:52,873 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-15 14:17:53,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:53,061 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:53,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:53,062 INFO L85 PathProgramCache]: Analyzing trace with hash 51481388, now seen corresponding path program 1 times [2024-10-15 14:17:53,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:53,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728535833] [2024-10-15 14:17:53,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:53,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:53,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:53,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:53,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-15 14:17:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:53,210 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:17:53,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:53,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728535833] [2024-10-15 14:17:53,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728535833] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:53,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106628573] [2024-10-15 14:17:53,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:53,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:53,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:53,219 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) [2024-10-15 14:17:53,221 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 14:17:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:53,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-15 14:17:53,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:53,338 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:17:53,341 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:53,397 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:17:53,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106628573] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:53,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:53,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-10-15 14:17:53,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062335193] [2024-10-15 14:17:53,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:53,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-15 14:17:53,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:53,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-15 14:17:53,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-10-15 14:17:53,401 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-15 14:17:53,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:53,434 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2024-10-15 14:17:53,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-15 14:17:53,435 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 20 [2024-10-15 14:17:53,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:53,437 INFO L225 Difference]: With dead ends: 38 [2024-10-15 14:17:53,438 INFO L226 Difference]: Without dead ends: 24 [2024-10-15 14:17:53,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-10-15 14:17:53,440 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:53,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 14:17:53,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-10-15 14:17:53,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-10-15 14:17:53,446 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) [2024-10-15 14:17:53,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-10-15 14:17:53,447 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 20 [2024-10-15 14:17:53,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:53,447 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-10-15 14:17:53,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-15 14:17:53,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:53,448 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2024-10-15 14:17:53,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-15 14:17:53,449 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:53,449 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:53,466 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-15 14:17:53,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:53,650 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:53,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:53,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1809000392, now seen corresponding path program 2 times [2024-10-15 14:17:53,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:53,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265695503] [2024-10-15 14:17:53,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:53,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:53,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:53,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:53,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 14:17:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:53,792 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:17:53,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:53,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265695503] [2024-10-15 14:17:53,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265695503] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:53,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647441574] [2024-10-15 14:17:53,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:17:53,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:53,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:53,795 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) [2024-10-15 14:17:53,796 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 14:17:53,843 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:17:53,843 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:53,844 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-15 14:17:53,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:53,908 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:17:53,908 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:53,975 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:17:53,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647441574] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:53,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:53,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-10-15 14:17:53,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307102838] [2024-10-15 14:17:53,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:53,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-15 14:17:53,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:53,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-15 14:17:53,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-15 14:17:53,978 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) [2024-10-15 14:17:54,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:54,040 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2024-10-15 14:17:54,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-15 14:17:54,042 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 [2024-10-15 14:17:54,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:54,043 INFO L225 Difference]: With dead ends: 37 [2024-10-15 14:17:54,043 INFO L226 Difference]: Without dead ends: 35 [2024-10-15 14:17:54,043 INFO L431 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 [2024-10-15 14:17:54,044 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:54,044 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 53 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 14:17:54,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-10-15 14:17:54,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2024-10-15 14:17:54,054 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) [2024-10-15 14:17:54,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2024-10-15 14:17:54,055 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 21 [2024-10-15 14:17:54,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:54,055 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2024-10-15 14:17:54,056 INFO L472 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) [2024-10-15 14:17:54,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:54,056 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2024-10-15 14:17:54,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-15 14:17:54,057 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:54,057 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:54,075 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-15 14:17:54,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:54,258 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:54,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:54,259 INFO L85 PathProgramCache]: Analyzing trace with hash -835361301, now seen corresponding path program 3 times [2024-10-15 14:17:54,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:54,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387478733] [2024-10-15 14:17:54,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:54,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:54,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:54,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:54,381 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 14:17:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:54,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-15 14:17:54,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:54,393 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-15 14:17:54,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:54,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387478733] [2024-10-15 14:17:54,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387478733] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:54,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919812323] [2024-10-15 14:17:54,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 14:17:54,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:54,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:54,396 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) [2024-10-15 14:17:54,398 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-15 14:17:54,436 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-15 14:17:54,437 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:54,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-15 14:17:54,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:54,546 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-15 14:17:54,548 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:54,619 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-15 14:17:54,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919812323] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:54,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:54,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-10-15 14:17:54,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780586260] [2024-10-15 14:17:54,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:54,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-15 14:17:54,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:54,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-15 14:17:54,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-10-15 14:17:54,622 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-15 14:17:54,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:54,683 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2024-10-15 14:17:54,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-15 14:17:54,684 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 28 [2024-10-15 14:17:54,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:54,685 INFO L225 Difference]: With dead ends: 49 [2024-10-15 14:17:54,685 INFO L226 Difference]: Without dead ends: 32 [2024-10-15 14:17:54,685 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-10-15 14:17:54,687 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:54,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 97 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:17:54,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-10-15 14:17:54,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-10-15 14:17:54,693 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) [2024-10-15 14:17:54,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2024-10-15 14:17:54,694 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 28 [2024-10-15 14:17:54,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:54,695 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2024-10-15 14:17:54,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-15 14:17:54,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:54,695 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2024-10-15 14:17:54,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-15 14:17:54,696 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:54,696 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:54,712 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-15 14:17:54,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:54,901 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:54,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:54,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1662458121, now seen corresponding path program 4 times [2024-10-15 14:17:54,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:54,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193136654] [2024-10-15 14:17:54,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:54,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:55,011 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:55,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:55,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-15 14:17:55,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:55,018 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-15 14:17:55,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:55,021 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-15 14:17:55,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:55,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193136654] [2024-10-15 14:17:55,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193136654] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:55,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993705044] [2024-10-15 14:17:55,022 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 14:17:55,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:55,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:55,024 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) [2024-10-15 14:17:55,026 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-15 14:17:55,064 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 14:17:55,064 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:55,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-15 14:17:55,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:55,115 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-15 14:17:55,115 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:55,188 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-15 14:17:55,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993705044] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:55,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:55,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2024-10-15 14:17:55,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215961243] [2024-10-15 14:17:55,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:55,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-15 14:17:55,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:55,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-15 14:17:55,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-15 14:17:55,192 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) [2024-10-15 14:17:55,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:55,261 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2024-10-15 14:17:55,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-15 14:17:55,261 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 [2024-10-15 14:17:55,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:55,263 INFO L225 Difference]: With dead ends: 45 [2024-10-15 14:17:55,264 INFO L226 Difference]: Without dead ends: 43 [2024-10-15 14:17:55,264 INFO L431 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 [2024-10-15 14:17:55,265 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:55,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 65 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:17:55,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-10-15 14:17:55,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2024-10-15 14:17:55,275 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) [2024-10-15 14:17:55,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2024-10-15 14:17:55,276 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 29 [2024-10-15 14:17:55,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:55,276 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2024-10-15 14:17:55,276 INFO L472 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) [2024-10-15 14:17:55,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:55,277 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2024-10-15 14:17:55,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-15 14:17:55,277 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:55,277 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:55,290 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-15 14:17:55,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-15 14:17:55,478 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:55,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:55,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1955720628, now seen corresponding path program 5 times [2024-10-15 14:17:55,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:55,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513636599] [2024-10-15 14:17:55,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:55,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:55,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:55,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-15 14:17:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:55,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-15 14:17:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:55,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-15 14:17:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:55,632 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-15 14:17:55,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:55,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513636599] [2024-10-15 14:17:55,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513636599] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:55,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087513116] [2024-10-15 14:17:55,633 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 14:17:55,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:55,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:55,636 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) [2024-10-15 14:17:55,639 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-15 14:17:55,681 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-10-15 14:17:55,682 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:55,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-15 14:17:55,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:55,798 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-15 14:17:55,798 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:55,893 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-15 14:17:55,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087513116] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:55,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:55,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-10-15 14:17:55,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265099241] [2024-10-15 14:17:55,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:55,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-15 14:17:55,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:55,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-15 14:17:55,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-10-15 14:17:55,897 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-10-15 14:17:55,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:55,963 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2024-10-15 14:17:55,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-15 14:17:55,963 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 36 [2024-10-15 14:17:55,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:55,964 INFO L225 Difference]: With dead ends: 60 [2024-10-15 14:17:55,965 INFO L226 Difference]: Without dead ends: 40 [2024-10-15 14:17:55,965 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 68 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-10-15 14:17:55,966 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:55,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 98 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:17:55,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-10-15 14:17:55,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-10-15 14:17:55,971 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) [2024-10-15 14:17:55,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2024-10-15 14:17:55,972 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 36 [2024-10-15 14:17:55,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:55,972 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2024-10-15 14:17:55,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-10-15 14:17:55,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:55,973 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2024-10-15 14:17:55,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-15 14:17:55,974 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:55,974 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:55,991 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-15 14:17:56,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:56,175 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:56,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:56,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1715849048, now seen corresponding path program 6 times [2024-10-15 14:17:56,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:56,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153858385] [2024-10-15 14:17:56,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:56,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,271 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:56,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,273 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-15 14:17:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-15 14:17:56,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,280 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-15 14:17:56,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,285 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-15 14:17:56,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:56,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153858385] [2024-10-15 14:17:56,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153858385] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:56,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415049041] [2024-10-15 14:17:56,286 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 14:17:56,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:56,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:56,288 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) [2024-10-15 14:17:56,289 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-15 14:17:56,336 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-10-15 14:17:56,336 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:56,338 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-15 14:17:56,340 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:56,417 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-15 14:17:56,417 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:56,491 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-15 14:17:56,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415049041] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:56,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:56,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-10-15 14:17:56,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817425333] [2024-10-15 14:17:56,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:56,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-15 14:17:56,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:56,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-15 14:17:56,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-15 14:17:56,494 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) [2024-10-15 14:17:56,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:56,553 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2024-10-15 14:17:56,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 14:17:56,553 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 [2024-10-15 14:17:56,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:56,554 INFO L225 Difference]: With dead ends: 53 [2024-10-15 14:17:56,554 INFO L226 Difference]: Without dead ends: 51 [2024-10-15 14:17:56,555 INFO L431 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 [2024-10-15 14:17:56,555 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:56,556 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 58 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 14:17:56,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-10-15 14:17:56,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2024-10-15 14:17:56,562 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) [2024-10-15 14:17:56,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2024-10-15 14:17:56,563 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 37 [2024-10-15 14:17:56,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:56,566 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2024-10-15 14:17:56,566 INFO L472 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) [2024-10-15 14:17:56,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:56,566 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2024-10-15 14:17:56,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-10-15 14:17:56,569 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:56,569 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:56,588 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-15 14:17:56,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:56,774 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:56,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:56,774 INFO L85 PathProgramCache]: Analyzing trace with hash 640103115, now seen corresponding path program 7 times [2024-10-15 14:17:56,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:56,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170974755] [2024-10-15 14:17:56,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:56,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-15 14:17:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,919 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-15 14:17:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-15 14:17:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-15 14:17:56,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,926 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 24 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-15 14:17:56,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:56,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170974755] [2024-10-15 14:17:56,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170974755] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:56,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358386092] [2024-10-15 14:17:56,927 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 14:17:56,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:56,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:56,928 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) [2024-10-15 14:17:56,929 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-15 14:17:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-15 14:17:56,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:57,105 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-15 14:17:57,105 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:57,215 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-15 14:17:57,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358386092] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:57,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:57,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-10-15 14:17:57,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536853584] [2024-10-15 14:17:57,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:57,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-15 14:17:57,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:57,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-15 14:17:57,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2024-10-15 14:17:57,218 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-10-15 14:17:57,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:57,292 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2024-10-15 14:17:57,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-15 14:17:57,293 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 44 [2024-10-15 14:17:57,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:57,293 INFO L225 Difference]: With dead ends: 71 [2024-10-15 14:17:57,293 INFO L226 Difference]: Without dead ends: 48 [2024-10-15 14:17:57,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 83 SyntacticMatches, 9 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2024-10-15 14:17:57,295 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:57,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 109 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:17:57,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-10-15 14:17:57,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-10-15 14:17:57,301 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) [2024-10-15 14:17:57,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2024-10-15 14:17:57,301 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 44 [2024-10-15 14:17:57,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:57,302 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2024-10-15 14:17:57,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-10-15 14:17:57,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:57,302 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2024-10-15 14:17:57,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-15 14:17:57,303 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:57,303 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:57,320 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-15 14:17:57,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:57,508 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:57,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:57,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1884349481, now seen corresponding path program 8 times [2024-10-15 14:17:57,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:57,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880465138] [2024-10-15 14:17:57,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:57,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:57,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:57,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:57,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:57,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-15 14:17:57,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:57,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-15 14:17:57,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:57,660 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-15 14:17:57,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:57,663 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-15 14:17:57,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:57,667 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 18 proven. 31 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-15 14:17:57,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:57,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880465138] [2024-10-15 14:17:57,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880465138] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:57,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445425786] [2024-10-15 14:17:57,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:17:57,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:57,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:57,670 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) [2024-10-15 14:17:57,672 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-15 14:17:57,715 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:17:57,715 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:57,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-15 14:17:57,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:57,788 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-15 14:17:57,788 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:57,904 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-15 14:17:57,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445425786] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:57,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:57,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 13 [2024-10-15 14:17:57,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129934318] [2024-10-15 14:17:57,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:57,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-15 14:17:57,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:57,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-15 14:17:57,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-10-15 14:17:57,907 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) [2024-10-15 14:17:57,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:57,977 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2024-10-15 14:17:57,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-15 14:17:57,978 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 [2024-10-15 14:17:57,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:57,979 INFO L225 Difference]: With dead ends: 61 [2024-10-15 14:17:57,979 INFO L226 Difference]: Without dead ends: 59 [2024-10-15 14:17:57,979 INFO L431 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 [2024-10-15 14:17:57,980 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:57,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 81 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:17:57,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-10-15 14:17:57,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2024-10-15 14:17:57,993 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) [2024-10-15 14:17:57,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2024-10-15 14:17:57,994 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 45 [2024-10-15 14:17:57,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:57,994 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2024-10-15 14:17:57,994 INFO L472 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) [2024-10-15 14:17:57,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:57,995 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2024-10-15 14:17:57,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-15 14:17:57,995 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:57,995 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:58,012 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-15 14:17:58,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-15 14:17:58,196 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:58,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:58,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1341349524, now seen corresponding path program 9 times [2024-10-15 14:17:58,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:58,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993948287] [2024-10-15 14:17:58,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:58,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:58,353 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:58,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-15 14:17:58,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:58,358 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-15 14:17:58,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:58,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-15 14:17:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:58,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-15 14:17:58,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:58,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-15 14:17:58,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:58,371 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 37 proven. 28 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-15 14:17:58,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:58,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993948287] [2024-10-15 14:17:58,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993948287] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:58,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207730222] [2024-10-15 14:17:58,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 14:17:58,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:58,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:58,374 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) [2024-10-15 14:17:58,375 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-15 14:17:58,422 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-15 14:17:58,422 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:58,423 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-15 14:17:58,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:58,592 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-15 14:17:58,592 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:58,739 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-15 14:17:58,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207730222] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:58,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:58,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-10-15 14:17:58,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006263392] [2024-10-15 14:17:58,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:58,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-15 14:17:58,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:58,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-15 14:17:58,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2024-10-15 14:17:58,741 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-15 14:17:58,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:58,821 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2024-10-15 14:17:58,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-15 14:17:58,822 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 52 [2024-10-15 14:17:58,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:58,823 INFO L225 Difference]: With dead ends: 82 [2024-10-15 14:17:58,823 INFO L226 Difference]: Without dead ends: 56 [2024-10-15 14:17:58,823 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 98 SyntacticMatches, 11 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2024-10-15 14:17:58,824 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:58,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 134 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:17:58,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-10-15 14:17:58,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-10-15 14:17:58,831 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) [2024-10-15 14:17:58,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2024-10-15 14:17:58,832 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 52 [2024-10-15 14:17:58,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:58,832 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2024-10-15 14:17:58,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-15 14:17:58,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:58,833 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2024-10-15 14:17:58,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-15 14:17:58,834 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:58,834 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:58,853 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-15 14:17:59,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-15 14:17:59,035 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:59,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:59,036 INFO L85 PathProgramCache]: Analyzing trace with hash -556745096, now seen corresponding path program 10 times [2024-10-15 14:17:59,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:59,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102353050] [2024-10-15 14:17:59,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:59,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:59,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:59,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:59,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-15 14:17:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:59,227 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-15 14:17:59,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:59,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-15 14:17:59,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:59,232 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-15 14:17:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:59,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-15 14:17:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:59,238 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 25 proven. 46 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-15 14:17:59,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:59,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102353050] [2024-10-15 14:17:59,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102353050] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:59,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71396448] [2024-10-15 14:17:59,238 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 14:17:59,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:59,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:59,240 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) [2024-10-15 14:17:59,241 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-15 14:17:59,288 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 14:17:59,289 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:59,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-15 14:17:59,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:59,363 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-15 14:17:59,364 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:59,472 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-15 14:17:59,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71396448] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:59,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:59,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 14 [2024-10-15 14:17:59,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169446783] [2024-10-15 14:17:59,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:59,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-15 14:17:59,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:59,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-15 14:17:59,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-10-15 14:17:59,474 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) [2024-10-15 14:17:59,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:59,540 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2024-10-15 14:17:59,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-15 14:17:59,541 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 [2024-10-15 14:17:59,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:59,542 INFO L225 Difference]: With dead ends: 69 [2024-10-15 14:17:59,542 INFO L226 Difference]: Without dead ends: 67 [2024-10-15 14:17:59,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 109 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-10-15 14:17:59,544 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:59,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 64 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:17:59,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-10-15 14:17:59,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2024-10-15 14:17:59,556 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) [2024-10-15 14:17:59,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2024-10-15 14:17:59,556 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 53 [2024-10-15 14:17:59,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:59,557 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2024-10-15 14:17:59,557 INFO L472 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) [2024-10-15 14:17:59,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:59,557 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2024-10-15 14:17:59,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-15 14:17:59,558 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:59,558 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:59,578 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-15 14:17:59,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:59,758 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:59,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:59,759 INFO L85 PathProgramCache]: Analyzing trace with hash 483260331, now seen corresponding path program 11 times [2024-10-15 14:17:59,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:59,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717517219] [2024-10-15 14:17:59,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:59,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:59,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:59,959 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:59,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:59,961 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-15 14:17:59,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:59,964 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-15 14:17:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:59,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-15 14:17:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:59,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-15 14:17:59,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:59,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-15 14:17:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:59,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-15 14:17:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:59,975 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 53 proven. 37 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-15 14:17:59,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:59,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717517219] [2024-10-15 14:17:59,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717517219] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:59,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37560977] [2024-10-15 14:17:59,976 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 14:17:59,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:59,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:59,978 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) [2024-10-15 14:17:59,980 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-15 14:18:00,032 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-10-15 14:18:00,032 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:00,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-15 14:18:00,035 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:00,256 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-15 14:18:00,256 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:00,427 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-15 14:18:00,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37560977] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:00,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:00,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-10-15 14:18:00,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050996728] [2024-10-15 14:18:00,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:00,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-15 14:18:00,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:00,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-15 14:18:00,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2024-10-15 14:18:00,429 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 26 states have internal predecessors, (48), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-15 14:18:00,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:00,521 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2024-10-15 14:18:00,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-15 14:18:00,522 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 26 states have internal predecessors, (48), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 60 [2024-10-15 14:18:00,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:00,523 INFO L225 Difference]: With dead ends: 93 [2024-10-15 14:18:00,523 INFO L226 Difference]: Without dead ends: 64 [2024-10-15 14:18:00,524 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 113 SyntacticMatches, 13 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2024-10-15 14:18:00,524 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:00,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 153 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:18:00,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-10-15 14:18:00,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-10-15 14:18:00,536 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) [2024-10-15 14:18:00,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2024-10-15 14:18:00,537 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 60 [2024-10-15 14:18:00,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:00,537 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2024-10-15 14:18:00,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 26 states have internal predecessors, (48), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-15 14:18:00,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:00,538 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2024-10-15 14:18:00,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-15 14:18:00,539 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:00,539 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:00,556 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:00,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-15 14:18:00,740 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:00,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:00,740 INFO L85 PathProgramCache]: Analyzing trace with hash -77969225, now seen corresponding path program 12 times [2024-10-15 14:18:00,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:00,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370647759] [2024-10-15 14:18:00,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:00,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:00,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:00,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-15 14:18:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:00,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-15 14:18:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:00,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-15 14:18:00,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:00,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-15 14:18:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:00,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-15 14:18:00,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:00,909 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-15 14:18:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:00,911 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 33 proven. 64 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-15 14:18:00,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:00,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370647759] [2024-10-15 14:18:00,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370647759] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:00,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361494311] [2024-10-15 14:18:00,911 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 14:18:00,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:00,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:00,913 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:18:00,916 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-15 14:18:00,964 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-10-15 14:18:00,964 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:00,965 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-15 14:18:00,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:01,030 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-15 14:18:01,030 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:01,153 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-15 14:18:01,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361494311] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:01,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:01,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 15 [2024-10-15 14:18:01,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108725274] [2024-10-15 14:18:01,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:01,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-15 14:18:01,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:01,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-15 14:18:01,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-10-15 14:18:01,156 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) [2024-10-15 14:18:01,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:01,231 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2024-10-15 14:18:01,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-15 14:18:01,232 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 [2024-10-15 14:18:01,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:01,233 INFO L225 Difference]: With dead ends: 77 [2024-10-15 14:18:01,233 INFO L226 Difference]: Without dead ends: 75 [2024-10-15 14:18:01,234 INFO L431 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 [2024-10-15 14:18:01,234 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:01,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 100 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:18:01,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-10-15 14:18:01,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2024-10-15 14:18:01,240 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) [2024-10-15 14:18:01,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2024-10-15 14:18:01,241 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 61 [2024-10-15 14:18:01,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:01,241 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2024-10-15 14:18:01,242 INFO L472 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) [2024-10-15 14:18:01,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:01,242 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2024-10-15 14:18:01,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-15 14:18:01,243 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:01,243 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:01,259 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-15 14:18:01,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-15 14:18:01,443 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:01,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:01,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1992243340, now seen corresponding path program 13 times [2024-10-15 14:18:01,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:01,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186876555] [2024-10-15 14:18:01,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:01,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:01,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:01,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-15 14:18:01,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:01,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-15 14:18:01,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:01,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-15 14:18:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:01,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-15 14:18:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:01,718 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-15 14:18:01,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:01,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-15 14:18:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:01,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-15 14:18:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:01,725 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 72 proven. 47 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-15 14:18:01,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:01,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186876555] [2024-10-15 14:18:01,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186876555] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:01,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054010890] [2024-10-15 14:18:01,726 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 14:18:01,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:01,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:01,728 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) [2024-10-15 14:18:01,729 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-15 14:18:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:01,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-15 14:18:01,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:02,007 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-15 14:18:02,007 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:02,193 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-15 14:18:02,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054010890] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:02,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:02,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-10-15 14:18:02,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548888375] [2024-10-15 14:18:02,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:02,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-15 14:18:02,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:02,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-15 14:18:02,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2024-10-15 14:18:02,195 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 29 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 29 states have internal predecessors, (53), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-15 14:18:02,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:02,311 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2024-10-15 14:18:02,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-15 14:18:02,312 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 29 states have internal predecessors, (53), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 68 [2024-10-15 14:18:02,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:02,313 INFO L225 Difference]: With dead ends: 104 [2024-10-15 14:18:02,313 INFO L226 Difference]: Without dead ends: 72 [2024-10-15 14:18:02,314 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 128 SyntacticMatches, 15 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2024-10-15 14:18:02,314 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:02,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 210 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:18:02,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-10-15 14:18:02,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-10-15 14:18:02,320 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) [2024-10-15 14:18:02,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2024-10-15 14:18:02,321 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 68 [2024-10-15 14:18:02,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:02,322 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2024-10-15 14:18:02,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 29 states have internal predecessors, (53), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-15 14:18:02,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:02,322 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2024-10-15 14:18:02,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-15 14:18:02,323 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:02,323 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:02,339 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-15 14:18:02,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-15 14:18:02,528 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:02,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:02,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1549812328, now seen corresponding path program 14 times [2024-10-15 14:18:02,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:02,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998449787] [2024-10-15 14:18:02,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:02,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:02,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:02,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-15 14:18:02,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:02,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 14:18:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:02,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-15 14:18:02,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:02,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 14:18:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:02,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-15 14:18:02,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:02,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-15 14:18:02,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:02,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-15 14:18:02,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:02,724 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 42 proven. 85 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-15 14:18:02,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:02,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998449787] [2024-10-15 14:18:02,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998449787] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:02,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829041442] [2024-10-15 14:18:02,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:18:02,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:02,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:02,727 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) [2024-10-15 14:18:02,730 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-15 14:18:02,783 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:18:02,784 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:02,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-15 14:18:02,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:02,870 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-15 14:18:02,870 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:03,044 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-15 14:18:03,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829041442] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:03,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:03,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 16 [2024-10-15 14:18:03,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086533888] [2024-10-15 14:18:03,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:03,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-15 14:18:03,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:03,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-15 14:18:03,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-10-15 14:18:03,048 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) [2024-10-15 14:18:03,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:03,137 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2024-10-15 14:18:03,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-15 14:18:03,137 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 [2024-10-15 14:18:03,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:03,138 INFO L225 Difference]: With dead ends: 85 [2024-10-15 14:18:03,138 INFO L226 Difference]: Without dead ends: 83 [2024-10-15 14:18:03,139 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 141 SyntacticMatches, 18 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2024-10-15 14:18:03,139 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:03,140 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 80 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:18:03,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-10-15 14:18:03,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2024-10-15 14:18:03,150 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) [2024-10-15 14:18:03,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2024-10-15 14:18:03,150 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 69 [2024-10-15 14:18:03,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:03,152 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2024-10-15 14:18:03,152 INFO L472 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) [2024-10-15 14:18:03,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:03,152 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2024-10-15 14:18:03,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-15 14:18:03,153 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:03,153 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:03,167 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:03,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-15 14:18:03,358 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:03,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:03,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1008186507, now seen corresponding path program 15 times [2024-10-15 14:18:03,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:03,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761884559] [2024-10-15 14:18:03,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:03,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:03,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:03,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:03,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-15 14:18:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:03,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 14:18:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:03,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-15 14:18:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:03,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 14:18:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:03,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-15 14:18:03,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:03,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-15 14:18:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:03,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-15 14:18:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:03,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-15 14:18:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:03,630 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 94 proven. 58 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-10-15 14:18:03,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:03,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761884559] [2024-10-15 14:18:03,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761884559] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:03,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067811059] [2024-10-15 14:18:03,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 14:18:03,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:03,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:03,632 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) [2024-10-15 14:18:03,634 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-15 14:18:03,688 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-10-15 14:18:03,689 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:03,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-15 14:18:03,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:03,966 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-10-15 14:18:03,966 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:04,172 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-10-15 14:18:04,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067811059] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:04,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:04,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2024-10-15 14:18:04,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803033482] [2024-10-15 14:18:04,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:04,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-15 14:18:04,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:04,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-15 14:18:04,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2024-10-15 14:18:04,175 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand has 32 states, 32 states have (on average 1.8125) internal successors, (58), 32 states have internal predecessors, (58), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-10-15 14:18:04,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:04,284 INFO L93 Difference]: Finished difference Result 115 states and 125 transitions. [2024-10-15 14:18:04,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-15 14:18:04,284 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.8125) internal successors, (58), 32 states have internal predecessors, (58), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 76 [2024-10-15 14:18:04,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:04,285 INFO L225 Difference]: With dead ends: 115 [2024-10-15 14:18:04,285 INFO L226 Difference]: Without dead ends: 80 [2024-10-15 14:18:04,286 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 143 SyntacticMatches, 17 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2024-10-15 14:18:04,287 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:04,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 160 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:18:04,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-10-15 14:18:04,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-10-15 14:18:04,293 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) [2024-10-15 14:18:04,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2024-10-15 14:18:04,293 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 76 [2024-10-15 14:18:04,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:04,294 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2024-10-15 14:18:04,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.8125) internal successors, (58), 32 states have internal predecessors, (58), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-10-15 14:18:04,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:04,294 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2024-10-15 14:18:04,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-15 14:18:04,295 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:04,295 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:04,311 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:04,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:04,496 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:04,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:04,496 INFO L85 PathProgramCache]: Analyzing trace with hash 165178775, now seen corresponding path program 16 times [2024-10-15 14:18:04,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:04,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370764298] [2024-10-15 14:18:04,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:04,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:04,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:04,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-15 14:18:04,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-15 14:18:04,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-15 14:18:04,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-15 14:18:04,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-15 14:18:04,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-15 14:18:04,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-15 14:18:04,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-15 14:18:04,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,723 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 52 proven. 109 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-10-15 14:18:04,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:04,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370764298] [2024-10-15 14:18:04,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370764298] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:04,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394543288] [2024-10-15 14:18:04,723 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 14:18:04,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:04,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:04,726 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) [2024-10-15 14:18:04,732 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-15 14:18:04,786 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 14:18:04,786 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:04,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-15 14:18:04,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:04,863 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 61 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-10-15 14:18:04,863 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:05,047 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 61 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-10-15 14:18:05,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394543288] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:05,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:05,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 17 [2024-10-15 14:18:05,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898681914] [2024-10-15 14:18:05,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:05,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-15 14:18:05,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:05,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-15 14:18:05,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2024-10-15 14:18:05,048 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) [2024-10-15 14:18:05,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:05,118 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2024-10-15 14:18:05,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-15 14:18:05,119 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 [2024-10-15 14:18:05,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:05,120 INFO L225 Difference]: With dead ends: 93 [2024-10-15 14:18:05,120 INFO L226 Difference]: Without dead ends: 91 [2024-10-15 14:18:05,120 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 160 SyntacticMatches, 18 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2024-10-15 14:18:05,121 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:05,121 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 67 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:18:05,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-10-15 14:18:05,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2024-10-15 14:18:05,127 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) [2024-10-15 14:18:05,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2024-10-15 14:18:05,128 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 77 [2024-10-15 14:18:05,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:05,128 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2024-10-15 14:18:05,128 INFO L472 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) [2024-10-15 14:18:05,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:05,129 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2024-10-15 14:18:05,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-15 14:18:05,129 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:05,129 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:05,144 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:05,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:05,334 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:05,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:05,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1305991084, now seen corresponding path program 17 times [2024-10-15 14:18:05,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:05,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113870097] [2024-10-15 14:18:05,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:05,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:05,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:05,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:05,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-15 14:18:05,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:05,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-15 14:18:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:05,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-15 14:18:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:05,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-15 14:18:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:05,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-15 14:18:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:05,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-15 14:18:05,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:05,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-15 14:18:05,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:05,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-15 14:18:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:05,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-15 14:18:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:05,633 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 119 proven. 70 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-10-15 14:18:05,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:05,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113870097] [2024-10-15 14:18:05,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113870097] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:05,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884823234] [2024-10-15 14:18:05,634 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 14:18:05,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:05,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:05,636 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) [2024-10-15 14:18:05,638 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-15 14:18:05,697 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-10-15 14:18:05,697 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:05,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-15 14:18:05,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:05,981 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-10-15 14:18:05,982 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:06,267 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-10-15 14:18:06,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884823234] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:06,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:06,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2024-10-15 14:18:06,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081721251] [2024-10-15 14:18:06,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:06,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-10-15 14:18:06,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:06,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-10-15 14:18:06,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2024-10-15 14:18:06,269 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand has 35 states, 35 states have (on average 1.8) internal successors, (63), 35 states have internal predecessors, (63), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-15 14:18:06,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:06,391 INFO L93 Difference]: Finished difference Result 126 states and 137 transitions. [2024-10-15 14:18:06,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-15 14:18:06,392 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.8) internal successors, (63), 35 states have internal predecessors, (63), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 84 [2024-10-15 14:18:06,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:06,392 INFO L225 Difference]: With dead ends: 126 [2024-10-15 14:18:06,393 INFO L226 Difference]: Without dead ends: 88 [2024-10-15 14:18:06,393 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 158 SyntacticMatches, 19 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2024-10-15 14:18:06,394 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:06,394 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 209 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:18:06,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-10-15 14:18:06,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-10-15 14:18:06,401 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) [2024-10-15 14:18:06,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2024-10-15 14:18:06,401 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 84 [2024-10-15 14:18:06,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:06,401 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2024-10-15 14:18:06,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.8) internal successors, (63), 35 states have internal predecessors, (63), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-15 14:18:06,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:06,402 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2024-10-15 14:18:06,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-15 14:18:06,403 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:06,403 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:06,417 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:06,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:06,603 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:06,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:06,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1023097672, now seen corresponding path program 18 times [2024-10-15 14:18:06,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:06,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005760649] [2024-10-15 14:18:06,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:06,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:06,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-15 14:18:06,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-15 14:18:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-15 14:18:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-15 14:18:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-15 14:18:06,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-15 14:18:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-15 14:18:06,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,838 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-15 14:18:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-15 14:18:06,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,842 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 63 proven. 136 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-10-15 14:18:06,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:06,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005760649] [2024-10-15 14:18:06,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005760649] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:06,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875006247] [2024-10-15 14:18:06,843 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 14:18:06,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:06,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:06,845 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) [2024-10-15 14:18:06,847 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-15 14:18:06,905 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-10-15 14:18:06,906 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:06,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-15 14:18:06,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:06,979 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 73 proven. 126 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-10-15 14:18:06,980 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:07,173 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 73 proven. 126 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-10-15 14:18:07,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875006247] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:07,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:07,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 18 [2024-10-15 14:18:07,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184763526] [2024-10-15 14:18:07,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:07,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-15 14:18:07,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:07,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-15 14:18:07,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2024-10-15 14:18:07,175 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) [2024-10-15 14:18:07,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:07,273 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2024-10-15 14:18:07,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-15 14:18:07,273 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 [2024-10-15 14:18:07,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:07,274 INFO L225 Difference]: With dead ends: 101 [2024-10-15 14:18:07,275 INFO L226 Difference]: Without dead ends: 99 [2024-10-15 14:18:07,275 INFO L431 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 [2024-10-15 14:18:07,275 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:07,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 82 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:18:07,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-10-15 14:18:07,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2024-10-15 14:18:07,285 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) [2024-10-15 14:18:07,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2024-10-15 14:18:07,287 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 85 [2024-10-15 14:18:07,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:07,288 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2024-10-15 14:18:07,288 INFO L472 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) [2024-10-15 14:18:07,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:07,288 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2024-10-15 14:18:07,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-15 14:18:07,289 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:07,289 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:07,305 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:07,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-15 14:18:07,490 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:07,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:07,490 INFO L85 PathProgramCache]: Analyzing trace with hash 359819627, now seen corresponding path program 19 times [2024-10-15 14:18:07,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:07,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885405660] [2024-10-15 14:18:07,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:07,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:07,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:07,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-15 14:18:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:07,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-15 14:18:07,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:07,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-15 14:18:07,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:07,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-15 14:18:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:07,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-15 14:18:07,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:07,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-15 14:18:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:07,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-15 14:18:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:07,842 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-15 14:18:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:07,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-15 14:18:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:07,845 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-15 14:18:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:07,847 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 147 proven. 83 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-10-15 14:18:07,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:07,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885405660] [2024-10-15 14:18:07,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885405660] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:07,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033145201] [2024-10-15 14:18:07,848 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 14:18:07,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:07,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:07,850 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) [2024-10-15 14:18:07,851 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-15 14:18:07,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:07,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-15 14:18:07,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:08,272 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-10-15 14:18:08,272 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:08,524 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-10-15 14:18:08,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033145201] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:08,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:08,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 38 [2024-10-15 14:18:08,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053512757] [2024-10-15 14:18:08,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:08,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-10-15 14:18:08,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:08,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-10-15 14:18:08,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=1077, Unknown=0, NotChecked=0, Total=1406 [2024-10-15 14:18:08,526 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand has 38 states, 38 states have (on average 1.7894736842105263) internal successors, (68), 38 states have internal predecessors, (68), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-10-15 14:18:08,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:08,658 INFO L93 Difference]: Finished difference Result 137 states and 149 transitions. [2024-10-15 14:18:08,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-15 14:18:08,660 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.7894736842105263) internal successors, (68), 38 states have internal predecessors, (68), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 92 [2024-10-15 14:18:08,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:08,661 INFO L225 Difference]: With dead ends: 137 [2024-10-15 14:18:08,661 INFO L226 Difference]: Without dead ends: 96 [2024-10-15 14:18:08,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 173 SyntacticMatches, 21 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=329, Invalid=1077, Unknown=0, NotChecked=0, Total=1406 [2024-10-15 14:18:08,663 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:08,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 229 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:18:08,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-10-15 14:18:08,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-10-15 14:18:08,671 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) [2024-10-15 14:18:08,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2024-10-15 14:18:08,672 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 92 [2024-10-15 14:18:08,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:08,672 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2024-10-15 14:18:08,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.7894736842105263) internal successors, (68), 38 states have internal predecessors, (68), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-10-15 14:18:08,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:08,673 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2024-10-15 14:18:08,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-15 14:18:08,675 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:08,675 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:08,688 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:08,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-15 14:18:08,879 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:08,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:08,879 INFO L85 PathProgramCache]: Analyzing trace with hash -325612937, now seen corresponding path program 20 times [2024-10-15 14:18:08,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:08,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159186324] [2024-10-15 14:18:08,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:08,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:08,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:09,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:09,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-15 14:18:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:09,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-15 14:18:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:09,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-15 14:18:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:09,135 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-15 14:18:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:09,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-15 14:18:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:09,138 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-15 14:18:09,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:09,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-15 14:18:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:09,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-15 14:18:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:09,143 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-15 14:18:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:09,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-10-15 14:18:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:09,146 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 75 proven. 166 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-10-15 14:18:09,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:09,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159186324] [2024-10-15 14:18:09,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159186324] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:09,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478793872] [2024-10-15 14:18:09,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:18:09,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:09,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:09,149 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) [2024-10-15 14:18:09,150 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-15 14:18:09,207 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:18:09,207 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:09,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-15 14:18:09,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:09,298 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 86 proven. 155 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-10-15 14:18:09,298 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:09,519 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 86 proven. 155 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-10-15 14:18:09,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478793872] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:09,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:09,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 19 [2024-10-15 14:18:09,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942729545] [2024-10-15 14:18:09,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:09,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-15 14:18:09,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:09,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-15 14:18:09,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2024-10-15 14:18:09,521 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) [2024-10-15 14:18:09,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:09,602 INFO L93 Difference]: Finished difference Result 109 states and 111 transitions. [2024-10-15 14:18:09,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-15 14:18:09,603 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 [2024-10-15 14:18:09,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:09,604 INFO L225 Difference]: With dead ends: 109 [2024-10-15 14:18:09,604 INFO L226 Difference]: Without dead ends: 107 [2024-10-15 14:18:09,604 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 192 SyntacticMatches, 24 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2024-10-15 14:18:09,605 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:09,605 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 73 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:18:09,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-10-15 14:18:09,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103. [2024-10-15 14:18:09,611 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) [2024-10-15 14:18:09,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2024-10-15 14:18:09,612 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 93 [2024-10-15 14:18:09,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:09,612 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2024-10-15 14:18:09,612 INFO L472 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) [2024-10-15 14:18:09,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:09,612 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2024-10-15 14:18:09,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-15 14:18:09,613 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:09,613 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:09,629 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:09,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:09,814 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:09,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:09,814 INFO L85 PathProgramCache]: Analyzing trace with hash 740851404, now seen corresponding path program 21 times [2024-10-15 14:18:09,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:09,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218787206] [2024-10-15 14:18:09,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:09,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:09,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,189 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-15 14:18:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-15 14:18:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-15 14:18:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-15 14:18:10,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-15 14:18:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-15 14:18:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-15 14:18:10,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-15 14:18:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-15 14:18:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-10-15 14:18:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-15 14:18:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,216 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 178 proven. 97 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-10-15 14:18:10,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:10,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218787206] [2024-10-15 14:18:10,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218787206] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:10,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742831448] [2024-10-15 14:18:10,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 14:18:10,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:10,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:10,219 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) [2024-10-15 14:18:10,221 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-10-15 14:18:10,294 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-10-15 14:18:10,295 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:10,296 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-15 14:18:10,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:10,704 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-10-15 14:18:10,704 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:11,034 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-10-15 14:18:11,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742831448] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:11,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:11,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 41 [2024-10-15 14:18:11,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125188753] [2024-10-15 14:18:11,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:11,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-10-15 14:18:11,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:11,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-10-15 14:18:11,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=1258, Unknown=0, NotChecked=0, Total=1640 [2024-10-15 14:18:11,037 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand has 41 states, 41 states have (on average 1.7804878048780488) internal successors, (73), 41 states have internal predecessors, (73), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-10-15 14:18:11,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:11,194 INFO L93 Difference]: Finished difference Result 148 states and 161 transitions. [2024-10-15 14:18:11,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-15 14:18:11,195 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.7804878048780488) internal successors, (73), 41 states have internal predecessors, (73), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 100 [2024-10-15 14:18:11,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:11,196 INFO L225 Difference]: With dead ends: 148 [2024-10-15 14:18:11,196 INFO L226 Difference]: Without dead ends: 104 [2024-10-15 14:18:11,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 188 SyntacticMatches, 23 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1001 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=382, Invalid=1258, Unknown=0, NotChecked=0, Total=1640 [2024-10-15 14:18:11,198 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:11,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 244 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:18:11,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-10-15 14:18:11,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-10-15 14:18:11,205 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) [2024-10-15 14:18:11,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2024-10-15 14:18:11,206 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 100 [2024-10-15 14:18:11,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:11,206 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2024-10-15 14:18:11,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.7804878048780488) internal successors, (73), 41 states have internal predecessors, (73), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-10-15 14:18:11,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:11,207 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2024-10-15 14:18:11,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-10-15 14:18:11,208 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:11,208 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:11,224 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:11,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-15 14:18:11,409 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:11,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:11,409 INFO L85 PathProgramCache]: Analyzing trace with hash -741223464, now seen corresponding path program 22 times [2024-10-15 14:18:11,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:11,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481066115] [2024-10-15 14:18:11,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:11,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:11,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:11,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:11,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-15 14:18:11,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:11,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-15 14:18:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:11,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-15 14:18:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:11,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-15 14:18:11,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:11,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-15 14:18:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:11,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-15 14:18:11,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:11,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-15 14:18:11,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:11,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-15 14:18:11,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:11,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-15 14:18:11,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:11,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-15 14:18:11,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:11,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-15 14:18:11,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:11,710 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 88 proven. 199 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-10-15 14:18:11,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:11,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481066115] [2024-10-15 14:18:11,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481066115] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:11,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111134625] [2024-10-15 14:18:11,711 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 14:18:11,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:11,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:11,713 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) [2024-10-15 14:18:11,714 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-10-15 14:18:11,771 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 14:18:11,772 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:11,773 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-15 14:18:11,775 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:11,858 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 100 proven. 187 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-10-15 14:18:11,858 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:12,078 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 100 proven. 187 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-10-15 14:18:12,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111134625] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:12,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:12,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 20 [2024-10-15 14:18:12,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487183903] [2024-10-15 14:18:12,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:12,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-15 14:18:12,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:12,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-15 14:18:12,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2024-10-15 14:18:12,080 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) [2024-10-15 14:18:12,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:12,177 INFO L93 Difference]: Finished difference Result 117 states and 119 transitions. [2024-10-15 14:18:12,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-15 14:18:12,178 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 [2024-10-15 14:18:12,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:12,179 INFO L225 Difference]: With dead ends: 117 [2024-10-15 14:18:12,179 INFO L226 Difference]: Without dead ends: 115 [2024-10-15 14:18:12,179 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 211 SyntacticMatches, 24 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2024-10-15 14:18:12,180 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:12,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 80 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:18:12,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-10-15 14:18:12,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2024-10-15 14:18:12,188 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) [2024-10-15 14:18:12,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2024-10-15 14:18:12,189 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 101 [2024-10-15 14:18:12,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:12,189 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2024-10-15 14:18:12,190 INFO L472 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) [2024-10-15 14:18:12,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:12,190 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2024-10-15 14:18:12,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-10-15 14:18:12,191 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:12,191 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:12,206 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-10-15 14:18:12,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-10-15 14:18:12,395 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:12,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:12,396 INFO L85 PathProgramCache]: Analyzing trace with hash 567023179, now seen corresponding path program 23 times [2024-10-15 14:18:12,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:12,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626216468] [2024-10-15 14:18:12,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:12,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:12,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:12,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-15 14:18:12,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:12,838 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-15 14:18:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:12,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-15 14:18:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:12,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-15 14:18:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:12,842 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-15 14:18:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:12,844 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-15 14:18:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:12,845 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-15 14:18:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:12,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-15 14:18:12,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:12,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-15 14:18:12,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:12,849 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-15 14:18:12,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:12,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-15 14:18:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:12,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-10-15 14:18:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:12,854 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 212 proven. 112 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-15 14:18:12,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:12,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626216468] [2024-10-15 14:18:12,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626216468] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:12,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135471314] [2024-10-15 14:18:12,855 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 14:18:12,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:12,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:12,856 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) [2024-10-15 14:18:12,858 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-10-15 14:18:12,921 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-10-15 14:18:12,922 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:12,923 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-15 14:18:12,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:13,301 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-15 14:18:13,301 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:13,643 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-15 14:18:13,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135471314] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:13,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:13,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 44 [2024-10-15 14:18:13,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950094678] [2024-10-15 14:18:13,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:13,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-10-15 14:18:13,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:13,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-10-15 14:18:13,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=1453, Unknown=0, NotChecked=0, Total=1892 [2024-10-15 14:18:13,647 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand has 44 states, 44 states have (on average 1.7727272727272727) internal successors, (78), 44 states have internal predecessors, (78), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-10-15 14:18:13,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:13,803 INFO L93 Difference]: Finished difference Result 159 states and 173 transitions. [2024-10-15 14:18:13,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-15 14:18:13,803 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.7727272727272727) internal successors, (78), 44 states have internal predecessors, (78), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 108 [2024-10-15 14:18:13,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:13,804 INFO L225 Difference]: With dead ends: 159 [2024-10-15 14:18:13,804 INFO L226 Difference]: Without dead ends: 112 [2024-10-15 14:18:13,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 203 SyntacticMatches, 25 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1164 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=439, Invalid=1453, Unknown=0, NotChecked=0, Total=1892 [2024-10-15 14:18:13,805 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:13,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 204 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:18:13,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-10-15 14:18:13,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-10-15 14:18:13,814 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) [2024-10-15 14:18:13,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2024-10-15 14:18:13,815 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 108 [2024-10-15 14:18:13,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:13,815 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2024-10-15 14:18:13,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.7727272727272727) internal successors, (78), 44 states have internal predecessors, (78), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-10-15 14:18:13,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:13,816 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2024-10-15 14:18:13,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-10-15 14:18:13,817 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:13,817 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:13,833 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:14,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-15 14:18:14,017 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:14,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:14,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1132093609, now seen corresponding path program 24 times [2024-10-15 14:18:14,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:14,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795643447] [2024-10-15 14:18:14,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:14,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:14,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:14,292 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-15 14:18:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:14,294 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-15 14:18:14,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:14,295 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-15 14:18:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:14,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-15 14:18:14,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:14,298 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-15 14:18:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:14,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-15 14:18:14,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:14,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-15 14:18:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:14,302 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-15 14:18:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:14,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-15 14:18:14,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:14,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-15 14:18:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:14,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-15 14:18:14,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:14,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-15 14:18:14,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:14,311 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 102 proven. 235 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-15 14:18:14,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:14,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795643447] [2024-10-15 14:18:14,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795643447] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:14,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205664141] [2024-10-15 14:18:14,311 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 14:18:14,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:14,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:14,314 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) [2024-10-15 14:18:14,314 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-10-15 14:18:14,381 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-10-15 14:18:14,382 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:14,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-15 14:18:14,385 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:14,475 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 115 proven. 222 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-15 14:18:14,476 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:14,766 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 115 proven. 222 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-15 14:18:14,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205664141] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:14,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:14,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 21 [2024-10-15 14:18:14,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314076759] [2024-10-15 14:18:14,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:14,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-15 14:18:14,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:14,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-15 14:18:14,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2024-10-15 14:18:14,768 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) [2024-10-15 14:18:14,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:14,881 INFO L93 Difference]: Finished difference Result 125 states and 127 transitions. [2024-10-15 14:18:14,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-15 14:18:14,882 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 [2024-10-15 14:18:14,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:14,883 INFO L225 Difference]: With dead ends: 125 [2024-10-15 14:18:14,883 INFO L226 Difference]: Without dead ends: 123 [2024-10-15 14:18:14,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 228 SyntacticMatches, 26 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2024-10-15 14:18:14,884 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:14,884 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 103 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:18:14,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-10-15 14:18:14,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2024-10-15 14:18:14,892 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) [2024-10-15 14:18:14,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2024-10-15 14:18:14,892 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 109 [2024-10-15 14:18:14,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:14,893 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2024-10-15 14:18:14,893 INFO L472 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) [2024-10-15 14:18:14,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:14,893 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2024-10-15 14:18:14,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-10-15 14:18:14,894 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:14,894 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:14,911 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:15,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-15 14:18:15,099 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:15,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:15,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1325191700, now seen corresponding path program 25 times [2024-10-15 14:18:15,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:15,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131961516] [2024-10-15 14:18:15,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:15,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-15 14:18:15,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-15 14:18:15,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,595 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-15 14:18:15,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-15 14:18:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-15 14:18:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-15 14:18:15,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-15 14:18:15,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-15 14:18:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-15 14:18:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,606 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-15 14:18:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,609 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-15 14:18:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-15 14:18:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-15 14:18:15,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,615 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 249 proven. 128 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-10-15 14:18:15,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:15,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131961516] [2024-10-15 14:18:15,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131961516] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:15,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577639441] [2024-10-15 14:18:15,615 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 14:18:15,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:15,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:15,617 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) [2024-10-15 14:18:15,619 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-10-15 14:18:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,700 INFO L255 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-15 14:18:15,702 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:16,175 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-10-15 14:18:16,175 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:16,496 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-10-15 14:18:16,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577639441] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:16,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:16,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 47 [2024-10-15 14:18:16,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686311123] [2024-10-15 14:18:16,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:16,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-10-15 14:18:16,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:16,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-10-15 14:18:16,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=500, Invalid=1662, Unknown=0, NotChecked=0, Total=2162 [2024-10-15 14:18:16,498 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand has 47 states, 47 states have (on average 1.7659574468085106) internal successors, (83), 47 states have internal predecessors, (83), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-10-15 14:18:16,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:16,637 INFO L93 Difference]: Finished difference Result 170 states and 185 transitions. [2024-10-15 14:18:16,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-15 14:18:16,638 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.7659574468085106) internal successors, (83), 47 states have internal predecessors, (83), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 116 [2024-10-15 14:18:16,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:16,639 INFO L225 Difference]: With dead ends: 170 [2024-10-15 14:18:16,639 INFO L226 Difference]: Without dead ends: 120 [2024-10-15 14:18:16,640 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 218 SyntacticMatches, 27 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1339 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=500, Invalid=1662, Unknown=0, NotChecked=0, Total=2162 [2024-10-15 14:18:16,640 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:16,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 229 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:18:16,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-10-15 14:18:16,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2024-10-15 14:18:16,650 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) [2024-10-15 14:18:16,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2024-10-15 14:18:16,652 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 116 [2024-10-15 14:18:16,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:16,652 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 121 transitions. [2024-10-15 14:18:16,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.7659574468085106) internal successors, (83), 47 states have internal predecessors, (83), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-10-15 14:18:16,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:16,652 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 121 transitions. [2024-10-15 14:18:16,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-10-15 14:18:16,653 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:16,653 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:16,669 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-10-15 14:18:16,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,27 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:16,854 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:16,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:16,855 INFO L85 PathProgramCache]: Analyzing trace with hash 358148856, now seen corresponding path program 26 times [2024-10-15 14:18:16,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:16,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843033265] [2024-10-15 14:18:16,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:16,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:16,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:17,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:17,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-15 14:18:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:17,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-15 14:18:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:17,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-15 14:18:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:17,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-15 14:18:17,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:17,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-15 14:18:17,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:17,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-15 14:18:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:17,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 14:18:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:17,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-15 14:18:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:17,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-15 14:18:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:17,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-15 14:18:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:17,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-15 14:18:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:17,227 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-10-15 14:18:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:17,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-15 14:18:17,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:17,230 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 117 proven. 274 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-10-15 14:18:17,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:17,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843033265] [2024-10-15 14:18:17,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843033265] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:17,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174195429] [2024-10-15 14:18:17,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:18:17,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:17,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:17,232 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) [2024-10-15 14:18:17,234 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-10-15 14:18:17,293 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:18:17,293 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:17,294 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-15 14:18:17,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:17,397 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 131 proven. 260 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-10-15 14:18:17,397 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:17,670 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 131 proven. 260 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-10-15 14:18:17,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174195429] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:17,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:17,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 22 [2024-10-15 14:18:17,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242945230] [2024-10-15 14:18:17,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:17,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-15 14:18:17,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:17,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-15 14:18:17,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2024-10-15 14:18:17,671 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) [2024-10-15 14:18:17,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:17,753 INFO L93 Difference]: Finished difference Result 133 states and 135 transitions. [2024-10-15 14:18:17,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-15 14:18:17,754 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 [2024-10-15 14:18:17,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:17,755 INFO L225 Difference]: With dead ends: 133 [2024-10-15 14:18:17,755 INFO L226 Difference]: Without dead ends: 131 [2024-10-15 14:18:17,756 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 243 SyntacticMatches, 30 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2024-10-15 14:18:17,756 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:17,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 79 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:18:17,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-10-15 14:18:17,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2024-10-15 14:18:17,767 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) [2024-10-15 14:18:17,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2024-10-15 14:18:17,768 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 117 [2024-10-15 14:18:17,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:17,768 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2024-10-15 14:18:17,768 INFO L472 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) [2024-10-15 14:18:17,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:17,770 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2024-10-15 14:18:17,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-15 14:18:17,770 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:17,771 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:17,788 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-10-15 14:18:17,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-15 14:18:17,971 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:17,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:17,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1584219349, now seen corresponding path program 27 times [2024-10-15 14:18:17,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:17,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45381251] [2024-10-15 14:18:17,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:17,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-15 14:18:18,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-15 14:18:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-15 14:18:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-15 14:18:18,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-15 14:18:18,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-15 14:18:18,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,520 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 14:18:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-15 14:18:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-15 14:18:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,525 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-15 14:18:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,527 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-15 14:18:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-10-15 14:18:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-15 14:18:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-10-15 14:18:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,536 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 289 proven. 145 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-10-15 14:18:18,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:18,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45381251] [2024-10-15 14:18:18,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45381251] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:18,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414810434] [2024-10-15 14:18:18,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 14:18:18,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:18,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:18,543 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) [2024-10-15 14:18:18,546 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-10-15 14:18:18,624 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-10-15 14:18:18,624 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:18,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-15 14:18:18,628 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:19,082 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-10-15 14:18:19,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:19,430 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-10-15 14:18:19,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414810434] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:19,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:19,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 50 [2024-10-15 14:18:19,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735949012] [2024-10-15 14:18:19,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:19,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-10-15 14:18:19,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:19,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-10-15 14:18:19,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=1885, Unknown=0, NotChecked=0, Total=2450 [2024-10-15 14:18:19,432 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand has 50 states, 50 states have (on average 1.76) internal successors, (88), 50 states have internal predecessors, (88), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-10-15 14:18:19,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:19,672 INFO L93 Difference]: Finished difference Result 181 states and 197 transitions. [2024-10-15 14:18:19,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-10-15 14:18:19,672 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.76) internal successors, (88), 50 states have internal predecessors, (88), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 124 [2024-10-15 14:18:19,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:19,673 INFO L225 Difference]: With dead ends: 181 [2024-10-15 14:18:19,674 INFO L226 Difference]: Without dead ends: 128 [2024-10-15 14:18:19,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 233 SyntacticMatches, 29 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1526 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=565, Invalid=1885, Unknown=0, NotChecked=0, Total=2450 [2024-10-15 14:18:19,675 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:19,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 410 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:18:19,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-10-15 14:18:19,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-10-15 14:18:19,684 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) [2024-10-15 14:18:19,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2024-10-15 14:18:19,685 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 124 [2024-10-15 14:18:19,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:19,685 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2024-10-15 14:18:19,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.76) internal successors, (88), 50 states have internal predecessors, (88), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-10-15 14:18:19,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:19,686 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2024-10-15 14:18:19,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-10-15 14:18:19,688 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:19,688 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:19,705 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-10-15 14:18:19,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:19,889 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:19,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:19,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1511042103, now seen corresponding path program 28 times [2024-10-15 14:18:19,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:19,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337952027] [2024-10-15 14:18:19,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:19,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 14:18:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-15 14:18:20,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 14:18:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-15 14:18:20,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,227 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-15 14:18:20,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-15 14:18:20,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-15 14:18:20,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,230 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-15 14:18:20,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-15 14:18:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-15 14:18:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-15 14:18:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-15 14:18:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-15 14:18:20,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-15 14:18:20,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,240 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 133 proven. 316 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-10-15 14:18:20,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:20,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337952027] [2024-10-15 14:18:20,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337952027] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:20,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472800653] [2024-10-15 14:18:20,240 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 14:18:20,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:20,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:20,242 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) [2024-10-15 14:18:20,244 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-10-15 14:18:20,311 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 14:18:20,311 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:20,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-15 14:18:20,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:20,393 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 148 proven. 301 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-10-15 14:18:20,393 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:20,674 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 148 proven. 301 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-10-15 14:18:20,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472800653] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:20,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:20,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 23 [2024-10-15 14:18:20,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57073258] [2024-10-15 14:18:20,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:20,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-15 14:18:20,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:20,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-15 14:18:20,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2024-10-15 14:18:20,676 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) [2024-10-15 14:18:20,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:20,792 INFO L93 Difference]: Finished difference Result 141 states and 143 transitions. [2024-10-15 14:18:20,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-15 14:18:20,793 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 [2024-10-15 14:18:20,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:20,794 INFO L225 Difference]: With dead ends: 141 [2024-10-15 14:18:20,794 INFO L226 Difference]: Without dead ends: 139 [2024-10-15 14:18:20,795 INFO L431 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 [2024-10-15 14:18:20,795 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:20,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 87 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:18:20,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-10-15 14:18:20,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2024-10-15 14:18:20,805 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) [2024-10-15 14:18:20,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2024-10-15 14:18:20,806 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 125 [2024-10-15 14:18:20,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:20,806 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2024-10-15 14:18:20,806 INFO L472 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) [2024-10-15 14:18:20,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:20,807 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2024-10-15 14:18:20,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-10-15 14:18:20,808 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:20,808 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:20,824 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:21,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:21,008 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:21,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:21,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1144644876, now seen corresponding path program 29 times [2024-10-15 14:18:21,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:21,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227993329] [2024-10-15 14:18:21,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:21,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:21,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:21,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:21,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 14:18:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:21,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-15 14:18:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:21,520 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 14:18:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:21,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-15 14:18:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:21,523 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-15 14:18:21,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:21,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-15 14:18:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:21,525 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-15 14:18:21,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:21,527 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-15 14:18:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:21,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-15 14:18:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:21,529 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-15 14:18:21,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:21,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-15 14:18:21,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:21,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-15 14:18:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:21,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-15 14:18:21,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:21,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-15 14:18:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:21,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-10-15 14:18:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:21,537 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 332 proven. 163 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-10-15 14:18:21,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:21,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227993329] [2024-10-15 14:18:21,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227993329] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:21,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250068701] [2024-10-15 14:18:21,538 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 14:18:21,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:21,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:21,540 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) [2024-10-15 14:18:21,542 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-10-15 14:18:21,617 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-10-15 14:18:21,617 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:21,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-10-15 14:18:21,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:22,122 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-10-15 14:18:22,122 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:22,579 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-10-15 14:18:22,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250068701] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:22,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:22,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 53 [2024-10-15 14:18:22,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008991929] [2024-10-15 14:18:22,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:22,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-10-15 14:18:22,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:22,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-10-15 14:18:22,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=634, Invalid=2122, Unknown=0, NotChecked=0, Total=2756 [2024-10-15 14:18:22,581 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand has 53 states, 53 states have (on average 1.7547169811320755) internal successors, (93), 53 states have internal predecessors, (93), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-10-15 14:18:22,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:22,806 INFO L93 Difference]: Finished difference Result 192 states and 209 transitions. [2024-10-15 14:18:22,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-10-15 14:18:22,807 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.7547169811320755) internal successors, (93), 53 states have internal predecessors, (93), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 132 [2024-10-15 14:18:22,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:22,808 INFO L225 Difference]: With dead ends: 192 [2024-10-15 14:18:22,808 INFO L226 Difference]: Without dead ends: 136 [2024-10-15 14:18:22,809 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 248 SyntacticMatches, 31 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1725 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=634, Invalid=2122, Unknown=0, NotChecked=0, Total=2756 [2024-10-15 14:18:22,810 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:22,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 476 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:18:22,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-10-15 14:18:22,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-10-15 14:18:22,819 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) [2024-10-15 14:18:22,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2024-10-15 14:18:22,820 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 132 [2024-10-15 14:18:22,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:22,820 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2024-10-15 14:18:22,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.7547169811320755) internal successors, (93), 53 states have internal predecessors, (93), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-10-15 14:18:22,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:22,821 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2024-10-15 14:18:22,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-10-15 14:18:22,821 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:22,822 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:22,838 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-10-15 14:18:23,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-10-15 14:18:23,026 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:23,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:23,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1888744936, now seen corresponding path program 30 times [2024-10-15 14:18:23,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:23,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014671163] [2024-10-15 14:18:23,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:23,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:23,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-15 14:18:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-15 14:18:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,404 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-15 14:18:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-15 14:18:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-15 14:18:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,407 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-15 14:18:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,408 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-15 14:18:23,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-15 14:18:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-15 14:18:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,412 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-15 14:18:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-10-15 14:18:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,415 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-15 14:18:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-15 14:18:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-15 14:18:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,419 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-10-15 14:18:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,420 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 150 proven. 361 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-10-15 14:18:23,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:23,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014671163] [2024-10-15 14:18:23,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014671163] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:23,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471757917] [2024-10-15 14:18:23,421 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 14:18:23,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:23,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:23,425 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) [2024-10-15 14:18:23,428 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-10-15 14:18:23,494 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2024-10-15 14:18:23,494 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:23,495 INFO L255 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-10-15 14:18:23,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:23,589 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 166 proven. 345 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-10-15 14:18:23,589 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:23,895 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 166 proven. 345 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-10-15 14:18:23,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471757917] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:23,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:23,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 24 [2024-10-15 14:18:23,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604929080] [2024-10-15 14:18:23,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:23,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-15 14:18:23,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:23,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-15 14:18:23,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=368, Unknown=0, NotChecked=0, Total=552 [2024-10-15 14:18:23,897 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) [2024-10-15 14:18:24,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:24,022 INFO L93 Difference]: Finished difference Result 149 states and 151 transitions. [2024-10-15 14:18:24,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-15 14:18:24,022 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 [2024-10-15 14:18:24,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:24,024 INFO L225 Difference]: With dead ends: 149 [2024-10-15 14:18:24,024 INFO L226 Difference]: Without dead ends: 147 [2024-10-15 14:18:24,024 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 279 SyntacticMatches, 32 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2024-10-15 14:18:24,025 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:24,025 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 74 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:18:24,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-10-15 14:18:24,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 143. [2024-10-15 14:18:24,033 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) [2024-10-15 14:18:24,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2024-10-15 14:18:24,034 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 133 [2024-10-15 14:18:24,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:24,035 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2024-10-15 14:18:24,035 INFO L472 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) [2024-10-15 14:18:24,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:24,035 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2024-10-15 14:18:24,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-10-15 14:18:24,036 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:24,036 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:24,053 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:24,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:24,237 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:24,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:24,238 INFO L85 PathProgramCache]: Analyzing trace with hash 2092193803, now seen corresponding path program 31 times [2024-10-15 14:18:24,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:24,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816522096] [2024-10-15 14:18:24,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:24,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:24,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:24,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:24,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-15 14:18:24,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:24,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-15 14:18:24,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:24,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-15 14:18:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:24,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-15 14:18:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:24,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-15 14:18:24,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:24,825 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-15 14:18:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:24,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-15 14:18:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:24,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-15 14:18:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:24,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-15 14:18:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:24,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-15 14:18:24,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:24,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-10-15 14:18:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:24,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-15 14:18:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:24,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-15 14:18:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:24,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-15 14:18:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:24,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-10-15 14:18:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:24,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-10-15 14:18:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:24,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 378 proven. 182 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-15 14:18:24,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:24,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816522096] [2024-10-15 14:18:24,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816522096] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:24,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310547170] [2024-10-15 14:18:24,842 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 14:18:24,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:24,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:24,843 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) [2024-10-15 14:18:24,845 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-10-15 14:18:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:24,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-10-15 14:18:24,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:25,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-15 14:18:25,446 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:25,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-15 14:18:25,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310547170] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:25,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:25,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 56 [2024-10-15 14:18:25,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663287471] [2024-10-15 14:18:25,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:25,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-10-15 14:18:25,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:25,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-10-15 14:18:25,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=707, Invalid=2373, Unknown=0, NotChecked=0, Total=3080 [2024-10-15 14:18:25,964 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand has 56 states, 56 states have (on average 1.75) internal successors, (98), 56 states have internal predecessors, (98), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-10-15 14:18:26,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:26,228 INFO L93 Difference]: Finished difference Result 203 states and 221 transitions. [2024-10-15 14:18:26,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-15 14:18:26,229 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.75) internal successors, (98), 56 states have internal predecessors, (98), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 140 [2024-10-15 14:18:26,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:26,230 INFO L225 Difference]: With dead ends: 203 [2024-10-15 14:18:26,230 INFO L226 Difference]: Without dead ends: 144 [2024-10-15 14:18:26,231 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 263 SyntacticMatches, 33 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1936 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=707, Invalid=2373, Unknown=0, NotChecked=0, Total=3080 [2024-10-15 14:18:26,231 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:26,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 419 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:18:26,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-10-15 14:18:26,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-10-15 14:18:26,245 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) [2024-10-15 14:18:26,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2024-10-15 14:18:26,246 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 140 [2024-10-15 14:18:26,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:26,246 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2024-10-15 14:18:26,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.75) internal successors, (98), 56 states have internal predecessors, (98), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-10-15 14:18:26,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:26,246 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2024-10-15 14:18:26,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-10-15 14:18:26,247 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:26,247 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:26,265 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:26,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-10-15 14:18:26,448 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:26,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:26,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1294381335, now seen corresponding path program 32 times [2024-10-15 14:18:26,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:26,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855612019] [2024-10-15 14:18:26,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:26,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:26,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:26,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-15 14:18:26,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:26,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-15 14:18:26,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:26,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-15 14:18:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:26,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-15 14:18:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:26,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-15 14:18:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:26,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-15 14:18:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:26,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-15 14:18:26,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:26,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-15 14:18:26,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:26,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-15 14:18:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:26,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-15 14:18:26,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:26,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-15 14:18:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:26,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-15 14:18:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:26,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-10-15 14:18:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:26,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-10-15 14:18:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:26,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-15 14:18:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:26,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-15 14:18:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:26,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 168 proven. 409 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-15 14:18:26,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:26,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855612019] [2024-10-15 14:18:26,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855612019] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:26,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632026128] [2024-10-15 14:18:26,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:18:26,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:26,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:26,807 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) [2024-10-15 14:18:26,809 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-10-15 14:18:26,869 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:18:26,869 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:26,870 INFO L255 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-15 14:18:26,872 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:26,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 185 proven. 392 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-15 14:18:26,963 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:27,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 185 proven. 392 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-15 14:18:27,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632026128] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:27,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:27,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 25 [2024-10-15 14:18:27,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830638200] [2024-10-15 14:18:27,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:27,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-15 14:18:27,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:27,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-15 14:18:27,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=397, Unknown=0, NotChecked=0, Total=600 [2024-10-15 14:18:27,297 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) [2024-10-15 14:18:27,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:27,391 INFO L93 Difference]: Finished difference Result 157 states and 159 transitions. [2024-10-15 14:18:27,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-15 14:18:27,391 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 [2024-10-15 14:18:27,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:27,393 INFO L225 Difference]: With dead ends: 157 [2024-10-15 14:18:27,393 INFO L226 Difference]: Without dead ends: 155 [2024-10-15 14:18:27,393 INFO L431 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 [2024-10-15 14:18:27,393 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:27,394 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 68 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:18:27,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-10-15 14:18:27,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2024-10-15 14:18:27,404 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) [2024-10-15 14:18:27,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2024-10-15 14:18:27,405 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 141 [2024-10-15 14:18:27,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:27,406 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2024-10-15 14:18:27,406 INFO L472 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) [2024-10-15 14:18:27,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:27,406 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2024-10-15 14:18:27,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-10-15 14:18:27,407 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:27,407 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:27,422 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:27,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-10-15 14:18:27,608 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:27,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:27,608 INFO L85 PathProgramCache]: Analyzing trace with hash 907977772, now seen corresponding path program 33 times [2024-10-15 14:18:27,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:27,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084036376] [2024-10-15 14:18:27,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:27,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:27,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-15 14:18:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-15 14:18:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-15 14:18:28,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-15 14:18:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-15 14:18:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-15 14:18:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-15 14:18:28,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-15 14:18:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-15 14:18:28,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-15 14:18:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-15 14:18:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-15 14:18:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-10-15 14:18:28,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-10-15 14:18:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-15 14:18:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-15 14:18:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-10-15 14:18:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 427 proven. 202 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-10-15 14:18:28,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:28,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084036376] [2024-10-15 14:18:28,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084036376] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:28,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049874462] [2024-10-15 14:18:28,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 14:18:28,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:28,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:28,228 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) [2024-10-15 14:18:28,228 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-10-15 14:18:28,298 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-10-15 14:18:28,298 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:28,299 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-10-15 14:18:28,302 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:28,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-10-15 14:18:28,871 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:29,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-10-15 14:18:29,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049874462] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:29,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:29,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 59 [2024-10-15 14:18:29,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509514503] [2024-10-15 14:18:29,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:29,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-10-15 14:18:29,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:29,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-10-15 14:18:29,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=784, Invalid=2638, Unknown=0, NotChecked=0, Total=3422 [2024-10-15 14:18:29,340 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand has 59 states, 59 states have (on average 1.7457627118644068) internal successors, (103), 59 states have internal predecessors, (103), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-10-15 14:18:29,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:29,565 INFO L93 Difference]: Finished difference Result 214 states and 233 transitions. [2024-10-15 14:18:29,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-10-15 14:18:29,566 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.7457627118644068) internal successors, (103), 59 states have internal predecessors, (103), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 148 [2024-10-15 14:18:29,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:29,567 INFO L225 Difference]: With dead ends: 214 [2024-10-15 14:18:29,567 INFO L226 Difference]: Without dead ends: 152 [2024-10-15 14:18:29,568 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 278 SyntacticMatches, 35 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2159 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=784, Invalid=2638, Unknown=0, NotChecked=0, Total=3422 [2024-10-15 14:18:29,569 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:29,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 234 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:18:29,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-10-15 14:18:29,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2024-10-15 14:18:29,579 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) [2024-10-15 14:18:29,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 153 transitions. [2024-10-15 14:18:29,580 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 153 transitions. Word has length 148 [2024-10-15 14:18:29,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:29,580 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 153 transitions. [2024-10-15 14:18:29,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.7457627118644068) internal successors, (103), 59 states have internal predecessors, (103), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-10-15 14:18:29,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:29,581 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 153 transitions. [2024-10-15 14:18:29,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-10-15 14:18:29,582 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:29,582 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:29,598 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-10-15 14:18:29,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-10-15 14:18:29,783 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:29,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:29,783 INFO L85 PathProgramCache]: Analyzing trace with hash 844968248, now seen corresponding path program 34 times [2024-10-15 14:18:29,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:29,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389899708] [2024-10-15 14:18:29,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:29,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:29,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:30,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:30,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:30,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-15 14:18:30,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:30,226 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-15 14:18:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:30,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-15 14:18:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:30,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-15 14:18:30,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:30,230 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-15 14:18:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:30,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-15 14:18:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:30,232 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-15 14:18:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:30,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-15 14:18:30,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:30,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-10-15 14:18:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:30,236 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-15 14:18:30,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:30,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-15 14:18:30,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:30,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-10-15 14:18:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:30,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-10-15 14:18:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:30,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-15 14:18:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:30,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-15 14:18:30,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:30,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-15 14:18:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:30,244 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-10-15 14:18:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:30,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 187 proven. 460 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-10-15 14:18:30,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:30,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389899708] [2024-10-15 14:18:30,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389899708] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:30,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680232834] [2024-10-15 14:18:30,246 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 14:18:30,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:30,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:30,248 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) [2024-10-15 14:18:30,250 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-10-15 14:18:30,313 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 14:18:30,313 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:30,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-10-15 14:18:30,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:30,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 205 proven. 442 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-10-15 14:18:30,407 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:30,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 205 proven. 442 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-10-15 14:18:30,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680232834] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:30,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:30,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 26 [2024-10-15 14:18:30,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255936636] [2024-10-15 14:18:30,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:30,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-15 14:18:30,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:30,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-15 14:18:30,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=427, Unknown=0, NotChecked=0, Total=650 [2024-10-15 14:18:30,750 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) [2024-10-15 14:18:30,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:30,858 INFO L93 Difference]: Finished difference Result 165 states and 167 transitions. [2024-10-15 14:18:30,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-15 14:18:30,858 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 [2024-10-15 14:18:30,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:30,860 INFO L225 Difference]: With dead ends: 165 [2024-10-15 14:18:30,860 INFO L226 Difference]: Without dead ends: 163 [2024-10-15 14:18:30,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 313 SyntacticMatches, 36 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=229, Invalid=473, Unknown=0, NotChecked=0, Total=702 [2024-10-15 14:18:30,861 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:30,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 86 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:18:30,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-10-15 14:18:30,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2024-10-15 14:18:30,872 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) [2024-10-15 14:18:30,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2024-10-15 14:18:30,873 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 149 [2024-10-15 14:18:30,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:30,873 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2024-10-15 14:18:30,874 INFO L472 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) [2024-10-15 14:18:30,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:30,874 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2024-10-15 14:18:30,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-10-15 14:18:30,875 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:30,875 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:30,893 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:31,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-10-15 14:18:31,077 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:31,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:31,077 INFO L85 PathProgramCache]: Analyzing trace with hash 580840683, now seen corresponding path program 35 times [2024-10-15 14:18:31,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:31,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767920088] [2024-10-15 14:18:31,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:31,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,871 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-15 14:18:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,873 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-15 14:18:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,875 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-15 14:18:31,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,877 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-15 14:18:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,878 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-15 14:18:31,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,880 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-15 14:18:31,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,882 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-15 14:18:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-15 14:18:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-10-15 14:18:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-15 14:18:31,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-15 14:18:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,891 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-10-15 14:18:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-10-15 14:18:31,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-15 14:18:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,895 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-15 14:18:31,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-15 14:18:31,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-10-15 14:18:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-10-15 14:18:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 479 proven. 223 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-10-15 14:18:31,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:31,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767920088] [2024-10-15 14:18:31,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767920088] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:31,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705875704] [2024-10-15 14:18:31,903 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 14:18:31,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:31,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:31,904 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) [2024-10-15 14:18:31,905 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-10-15 14:18:31,981 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2024-10-15 14:18:31,981 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:31,982 INFO L255 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-10-15 14:18:31,984 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:32,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-10-15 14:18:32,592 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:33,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-10-15 14:18:33,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705875704] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:33,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:33,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 62 [2024-10-15 14:18:33,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790622706] [2024-10-15 14:18:33,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:33,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-10-15 14:18:33,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:33,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-10-15 14:18:33,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=865, Invalid=2917, Unknown=0, NotChecked=0, Total=3782 [2024-10-15 14:18:33,106 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand has 62 states, 62 states have (on average 1.7419354838709677) internal successors, (108), 62 states have internal predecessors, (108), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-10-15 14:18:33,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:33,377 INFO L93 Difference]: Finished difference Result 225 states and 245 transitions. [2024-10-15 14:18:33,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-10-15 14:18:33,377 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.7419354838709677) internal successors, (108), 62 states have internal predecessors, (108), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 156 [2024-10-15 14:18:33,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:33,379 INFO L225 Difference]: With dead ends: 225 [2024-10-15 14:18:33,379 INFO L226 Difference]: Without dead ends: 160 [2024-10-15 14:18:33,379 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 293 SyntacticMatches, 37 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2394 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=865, Invalid=2917, Unknown=0, NotChecked=0, Total=3782 [2024-10-15 14:18:33,380 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:33,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 282 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:18:33,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-10-15 14:18:33,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2024-10-15 14:18:33,391 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) [2024-10-15 14:18:33,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 161 transitions. [2024-10-15 14:18:33,392 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 161 transitions. Word has length 156 [2024-10-15 14:18:33,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:33,393 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 161 transitions. [2024-10-15 14:18:33,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.7419354838709677) internal successors, (108), 62 states have internal predecessors, (108), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-10-15 14:18:33,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:33,393 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 161 transitions. [2024-10-15 14:18:33,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-10-15 14:18:33,394 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:33,394 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:33,411 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:33,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-10-15 14:18:33,595 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:33,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:33,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1523208713, now seen corresponding path program 36 times [2024-10-15 14:18:33,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:33,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988223896] [2024-10-15 14:18:33,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:33,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-15 14:18:34,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,075 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-15 14:18:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,077 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-15 14:18:34,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,077 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-15 14:18:34,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-15 14:18:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,079 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-15 14:18:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-15 14:18:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,081 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-15 14:18:34,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-15 14:18:34,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-15 14:18:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-10-15 14:18:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-15 14:18:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-15 14:18:34,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-10-15 14:18:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-15 14:18:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-10-15 14:18:34,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-10-15 14:18:34,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-10-15 14:18:34,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 207 proven. 514 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-10-15 14:18:34,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:34,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988223896] [2024-10-15 14:18:34,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988223896] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:34,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866764804] [2024-10-15 14:18:34,092 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 14:18:34,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:34,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:34,093 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) [2024-10-15 14:18:34,094 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-10-15 14:18:34,167 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-10-15 14:18:34,168 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:34,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-10-15 14:18:34,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:34,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 226 proven. 495 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-10-15 14:18:34,290 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:34,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 226 proven. 495 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-10-15 14:18:34,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866764804] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:34,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:34,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 27 [2024-10-15 14:18:34,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392515125] [2024-10-15 14:18:34,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:34,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-15 14:18:34,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:34,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-15 14:18:34,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=458, Unknown=0, NotChecked=0, Total=702 [2024-10-15 14:18:34,661 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) [2024-10-15 14:18:34,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:34,788 INFO L93 Difference]: Finished difference Result 173 states and 175 transitions. [2024-10-15 14:18:34,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-15 14:18:34,788 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 [2024-10-15 14:18:34,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:34,790 INFO L225 Difference]: With dead ends: 173 [2024-10-15 14:18:34,790 INFO L226 Difference]: Without dead ends: 171 [2024-10-15 14:18:34,791 INFO L431 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 [2024-10-15 14:18:34,791 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:34,791 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 70 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:18:34,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-10-15 14:18:34,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2024-10-15 14:18:34,803 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) [2024-10-15 14:18:34,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2024-10-15 14:18:34,804 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 157 [2024-10-15 14:18:34,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:34,806 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2024-10-15 14:18:34,806 INFO L472 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) [2024-10-15 14:18:34,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:34,806 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2024-10-15 14:18:34,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-10-15 14:18:34,807 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:34,807 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:34,827 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:35,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-10-15 14:18:35,008 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:35,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:35,009 INFO L85 PathProgramCache]: Analyzing trace with hash -545035444, now seen corresponding path program 37 times [2024-10-15 14:18:35,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:35,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189389267] [2024-10-15 14:18:35,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:35,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:35,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:35,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-15 14:18:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:35,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-15 14:18:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:35,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-15 14:18:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:35,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-15 14:18:35,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:35,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-15 14:18:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:35,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-15 14:18:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:35,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-15 14:18:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:35,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-15 14:18:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:35,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-15 14:18:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:35,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-15 14:18:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:35,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-10-15 14:18:35,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:35,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-15 14:18:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:35,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-15 14:18:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:35,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-10-15 14:18:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:35,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-15 14:18:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:35,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-10-15 14:18:35,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:35,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-10-15 14:18:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:35,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-10-15 14:18:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:35,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-15 14:18:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:35,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 534 proven. 245 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-10-15 14:18:35,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:35,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189389267] [2024-10-15 14:18:35,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189389267] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:35,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863798880] [2024-10-15 14:18:35,802 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 14:18:35,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:35,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:35,804 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) [2024-10-15 14:18:35,810 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-10-15 14:18:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:35,875 INFO L255 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-10-15 14:18:35,878 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:36,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-10-15 14:18:36,559 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:37,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-10-15 14:18:37,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863798880] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:37,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:37,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 65 [2024-10-15 14:18:37,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059670939] [2024-10-15 14:18:37,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:37,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-10-15 14:18:37,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:37,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-10-15 14:18:37,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=950, Invalid=3210, Unknown=0, NotChecked=0, Total=4160 [2024-10-15 14:18:37,145 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand has 65 states, 65 states have (on average 1.7384615384615385) internal successors, (113), 65 states have internal predecessors, (113), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-10-15 14:18:37,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:37,379 INFO L93 Difference]: Finished difference Result 236 states and 257 transitions. [2024-10-15 14:18:37,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-10-15 14:18:37,379 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.7384615384615385) internal successors, (113), 65 states have internal predecessors, (113), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 164 [2024-10-15 14:18:37,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:37,381 INFO L225 Difference]: With dead ends: 236 [2024-10-15 14:18:37,381 INFO L226 Difference]: Without dead ends: 168 [2024-10-15 14:18:37,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 308 SyntacticMatches, 39 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2641 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=950, Invalid=3210, Unknown=0, NotChecked=0, Total=4160 [2024-10-15 14:18:37,382 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:37,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 376 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:18:37,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-10-15 14:18:37,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-10-15 14:18:37,396 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) [2024-10-15 14:18:37,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 169 transitions. [2024-10-15 14:18:37,397 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 169 transitions. Word has length 164 [2024-10-15 14:18:37,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:37,397 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 169 transitions. [2024-10-15 14:18:37,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.7384615384615385) internal successors, (113), 65 states have internal predecessors, (113), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-10-15 14:18:37,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:37,398 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 169 transitions. [2024-10-15 14:18:37,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-10-15 14:18:37,399 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:37,399 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:37,417 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:37,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-10-15 14:18:37,600 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:37,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:37,600 INFO L85 PathProgramCache]: Analyzing trace with hash -151101352, now seen corresponding path program 38 times [2024-10-15 14:18:37,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:37,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770158030] [2024-10-15 14:18:37,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:37,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:38,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:38,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:38,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-15 14:18:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:38,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-15 14:18:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:38,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-15 14:18:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:38,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-15 14:18:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:38,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-15 14:18:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:38,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-15 14:18:38,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:38,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-15 14:18:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:38,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-15 14:18:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:38,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-15 14:18:38,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:38,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-15 14:18:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:38,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-15 14:18:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:38,095 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-15 14:18:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:38,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-15 14:18:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:38,097 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-10-15 14:18:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:38,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-10-15 14:18:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:38,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-10-15 14:18:38,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:38,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-10-15 14:18:38,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:38,101 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-10-15 14:18:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:38,103 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-10-15 14:18:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:38,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 228 proven. 571 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-10-15 14:18:38,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:38,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770158030] [2024-10-15 14:18:38,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770158030] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:38,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802642149] [2024-10-15 14:18:38,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:18:38,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:38,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:38,105 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) [2024-10-15 14:18:38,106 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-10-15 14:18:38,172 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:18:38,172 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:38,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-10-15 14:18:38,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:38,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 248 proven. 551 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-10-15 14:18:38,273 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:38,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 248 proven. 551 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-10-15 14:18:38,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802642149] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:38,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:38,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 28 [2024-10-15 14:18:38,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975413448] [2024-10-15 14:18:38,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:38,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-15 14:18:38,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:38,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-15 14:18:38,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=490, Unknown=0, NotChecked=0, Total=756 [2024-10-15 14:18:38,706 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) [2024-10-15 14:18:38,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:38,813 INFO L93 Difference]: Finished difference Result 181 states and 183 transitions. [2024-10-15 14:18:38,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-15 14:18:38,813 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 [2024-10-15 14:18:38,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:38,815 INFO L225 Difference]: With dead ends: 181 [2024-10-15 14:18:38,815 INFO L226 Difference]: Without dead ends: 179 [2024-10-15 14:18:38,815 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 345 SyntacticMatches, 42 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=272, Invalid=540, Unknown=0, NotChecked=0, Total=812 [2024-10-15 14:18:38,815 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:38,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 85 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:18:38,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-10-15 14:18:38,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 175. [2024-10-15 14:18:38,831 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) [2024-10-15 14:18:38,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2024-10-15 14:18:38,832 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 165 [2024-10-15 14:18:38,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:38,832 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2024-10-15 14:18:38,833 INFO L472 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) [2024-10-15 14:18:38,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:38,833 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2024-10-15 14:18:38,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-15 14:18:38,834 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:38,834 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:38,851 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:39,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:39,035 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:39,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:39,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1782610379, now seen corresponding path program 39 times [2024-10-15 14:18:39,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:39,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659603008] [2024-10-15 14:18:39,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:39,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:39,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:39,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:39,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-15 14:18:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:39,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-15 14:18:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:39,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-15 14:18:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:39,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-15 14:18:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:39,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-15 14:18:39,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:39,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-15 14:18:39,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:39,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-15 14:18:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:39,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-15 14:18:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:39,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-15 14:18:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:39,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-15 14:18:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:39,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-15 14:18:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:39,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-15 14:18:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:39,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-15 14:18:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:39,958 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-10-15 14:18:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:39,960 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-10-15 14:18:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:39,961 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-10-15 14:18:39,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:39,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-10-15 14:18:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:39,964 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-10-15 14:18:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:39,965 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-10-15 14:18:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:39,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-10-15 14:18:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:39,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 592 proven. 268 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-10-15 14:18:39,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:39,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659603008] [2024-10-15 14:18:39,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659603008] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:39,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648756914] [2024-10-15 14:18:39,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 14:18:39,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:39,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:39,970 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) [2024-10-15 14:18:39,972 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-10-15 14:18:40,051 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2024-10-15 14:18:40,051 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:40,053 INFO L255 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-10-15 14:18:40,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:40,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-10-15 14:18:40,797 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:41,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-10-15 14:18:41,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648756914] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:41,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:41,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 68 [2024-10-15 14:18:41,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475707409] [2024-10-15 14:18:41,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:41,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-10-15 14:18:41,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:41,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-10-15 14:18:41,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1039, Invalid=3517, Unknown=0, NotChecked=0, Total=4556 [2024-10-15 14:18:41,394 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand has 68 states, 68 states have (on average 1.7352941176470589) internal successors, (118), 68 states have internal predecessors, (118), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-10-15 14:18:41,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:41,626 INFO L93 Difference]: Finished difference Result 247 states and 269 transitions. [2024-10-15 14:18:41,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-10-15 14:18:41,627 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.7352941176470589) internal successors, (118), 68 states have internal predecessors, (118), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 172 [2024-10-15 14:18:41,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:41,628 INFO L225 Difference]: With dead ends: 247 [2024-10-15 14:18:41,628 INFO L226 Difference]: Without dead ends: 176 [2024-10-15 14:18:41,629 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 323 SyntacticMatches, 41 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2900 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1039, Invalid=3517, Unknown=0, NotChecked=0, Total=4556 [2024-10-15 14:18:41,629 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:41,629 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 355 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:18:41,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-10-15 14:18:41,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-10-15 14:18:41,642 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) [2024-10-15 14:18:41,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 177 transitions. [2024-10-15 14:18:41,643 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 177 transitions. Word has length 172 [2024-10-15 14:18:41,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:41,643 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 177 transitions. [2024-10-15 14:18:41,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.7352941176470589) internal successors, (118), 68 states have internal predecessors, (118), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-10-15 14:18:41,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:41,643 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 177 transitions. [2024-10-15 14:18:41,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-10-15 14:18:41,644 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:41,645 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:41,662 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:41,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-10-15 14:18:41,846 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:41,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:41,846 INFO L85 PathProgramCache]: Analyzing trace with hash -651451689, now seen corresponding path program 40 times [2024-10-15 14:18:41,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:41,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994930145] [2024-10-15 14:18:41,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:41,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:41,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:42,274 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:42,275 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-15 14:18:42,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:42,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-15 14:18:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:42,278 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-15 14:18:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:42,279 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-15 14:18:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:42,280 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-15 14:18:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:42,281 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 14:18:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:42,283 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-15 14:18:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:42,284 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-15 14:18:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:42,285 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-15 14:18:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:42,286 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-15 14:18:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:42,287 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-10-15 14:18:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:42,289 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-15 14:18:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:42,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-10-15 14:18:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:42,291 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-15 14:18:42,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:42,292 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-10-15 14:18:42,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:42,294 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-10-15 14:18:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:42,295 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-10-15 14:18:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:42,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-15 14:18:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:42,297 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-10-15 14:18:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:42,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-10-15 14:18:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:42,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 250 proven. 631 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-10-15 14:18:42,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:42,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994930145] [2024-10-15 14:18:42,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994930145] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:42,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778678047] [2024-10-15 14:18:42,301 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 14:18:42,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:42,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:42,303 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) [2024-10-15 14:18:42,305 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-10-15 14:18:42,386 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 14:18:42,386 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:42,388 INFO L255 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-10-15 14:18:42,391 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:42,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 271 proven. 610 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-10-15 14:18:42,510 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:42,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 271 proven. 610 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-10-15 14:18:42,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778678047] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:42,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:42,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 29 [2024-10-15 14:18:42,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913556869] [2024-10-15 14:18:42,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:42,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-15 14:18:42,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:42,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-15 14:18:42,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=523, Unknown=0, NotChecked=0, Total=812 [2024-10-15 14:18:42,946 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) [2024-10-15 14:18:43,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:43,074 INFO L93 Difference]: Finished difference Result 189 states and 191 transitions. [2024-10-15 14:18:43,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-15 14:18:43,074 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 [2024-10-15 14:18:43,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:43,075 INFO L225 Difference]: With dead ends: 189 [2024-10-15 14:18:43,075 INFO L226 Difference]: Without dead ends: 187 [2024-10-15 14:18:43,076 INFO L431 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 [2024-10-15 14:18:43,076 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:43,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 121 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:18:43,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-10-15 14:18:43,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2024-10-15 14:18:43,089 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) [2024-10-15 14:18:43,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2024-10-15 14:18:43,090 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 173 [2024-10-15 14:18:43,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:43,090 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2024-10-15 14:18:43,090 INFO L472 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) [2024-10-15 14:18:43,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:43,091 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2024-10-15 14:18:43,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-10-15 14:18:43,091 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:43,091 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:43,108 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-10-15 14:18:43,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,42 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:43,292 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:43,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:43,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1044759956, now seen corresponding path program 41 times [2024-10-15 14:18:43,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:43,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338682991] [2024-10-15 14:18:43,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:43,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:44,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-15 14:18:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,075 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-15 14:18:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-15 14:18:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,077 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-15 14:18:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-15 14:18:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 14:18:44,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,081 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-15 14:18:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-15 14:18:44,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-15 14:18:44,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-15 14:18:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-10-15 14:18:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-15 14:18:44,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-10-15 14:18:44,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-15 14:18:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-10-15 14:18:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-10-15 14:18:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-10-15 14:18:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,095 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-15 14:18:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-10-15 14:18:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-10-15 14:18:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-10-15 14:18:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 653 proven. 292 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-10-15 14:18:44,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:44,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338682991] [2024-10-15 14:18:44,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338682991] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:44,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026928925] [2024-10-15 14:18:44,101 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 14:18:44,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:44,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:44,103 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) [2024-10-15 14:18:44,104 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-10-15 14:18:44,184 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-10-15 14:18:44,184 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:44,186 INFO L255 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-15 14:18:44,188 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:44,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-10-15 14:18:44,977 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:45,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-10-15 14:18:45,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026928925] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:45,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:45,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 71 [2024-10-15 14:18:45,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661741670] [2024-10-15 14:18:45,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:45,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-10-15 14:18:45,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:45,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-10-15 14:18:45,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1132, Invalid=3838, Unknown=0, NotChecked=0, Total=4970 [2024-10-15 14:18:45,664 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand has 71 states, 71 states have (on average 1.732394366197183) internal successors, (123), 71 states have internal predecessors, (123), 45 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-10-15 14:18:46,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:46,005 INFO L93 Difference]: Finished difference Result 258 states and 281 transitions. [2024-10-15 14:18:46,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-10-15 14:18:46,005 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.732394366197183) internal successors, (123), 71 states have internal predecessors, (123), 45 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 180 [2024-10-15 14:18:46,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:46,006 INFO L225 Difference]: With dead ends: 258 [2024-10-15 14:18:46,006 INFO L226 Difference]: Without dead ends: 184 [2024-10-15 14:18:46,007 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 338 SyntacticMatches, 43 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3171 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1132, Invalid=3838, Unknown=0, NotChecked=0, Total=4970 [2024-10-15 14:18:46,007 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:46,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 456 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 14:18:46,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-10-15 14:18:46,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2024-10-15 14:18:46,021 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) [2024-10-15 14:18:46,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 185 transitions. [2024-10-15 14:18:46,022 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 185 transitions. Word has length 180 [2024-10-15 14:18:46,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:46,022 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 185 transitions. [2024-10-15 14:18:46,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.732394366197183) internal successors, (123), 71 states have internal predecessors, (123), 45 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-10-15 14:18:46,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:46,023 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 185 transitions. [2024-10-15 14:18:46,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-10-15 14:18:46,023 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:46,023 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:46,039 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-10-15 14:18:46,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:46,224 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:46,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:46,224 INFO L85 PathProgramCache]: Analyzing trace with hash -22964360, now seen corresponding path program 42 times [2024-10-15 14:18:46,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:46,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787779964] [2024-10-15 14:18:46,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:46,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:46,660 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:46,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-15 14:18:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:46,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 14:18:46,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:46,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-15 14:18:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:46,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-15 14:18:46,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:46,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-15 14:18:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:46,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-15 14:18:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:46,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-15 14:18:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:46,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-15 14:18:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:46,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-15 14:18:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:46,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-15 14:18:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:46,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-15 14:18:46,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:46,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-15 14:18:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:46,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-15 14:18:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:46,679 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-10-15 14:18:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:46,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-10-15 14:18:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:46,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-10-15 14:18:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:46,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-10-15 14:18:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:46,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-10-15 14:18:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:46,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-10-15 14:18:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:46,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-10-15 14:18:46,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:46,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-10-15 14:18:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:46,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 273 proven. 694 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-10-15 14:18:46,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:46,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787779964] [2024-10-15 14:18:46,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787779964] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:46,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202086197] [2024-10-15 14:18:46,686 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 14:18:46,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:46,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:46,688 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) [2024-10-15 14:18:46,688 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-10-15 14:18:46,770 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2024-10-15 14:18:46,771 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:46,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-10-15 14:18:46,775 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:46,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 295 proven. 672 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-10-15 14:18:46,898 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:47,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 295 proven. 672 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-10-15 14:18:47,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202086197] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:47,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:47,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 30 [2024-10-15 14:18:47,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402137962] [2024-10-15 14:18:47,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:47,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-15 14:18:47,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:47,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-15 14:18:47,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=557, Unknown=0, NotChecked=0, Total=870 [2024-10-15 14:18:47,372 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) [2024-10-15 14:18:47,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:47,523 INFO L93 Difference]: Finished difference Result 197 states and 199 transitions. [2024-10-15 14:18:47,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-15 14:18:47,523 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 [2024-10-15 14:18:47,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:47,525 INFO L225 Difference]: With dead ends: 197 [2024-10-15 14:18:47,525 INFO L226 Difference]: Without dead ends: 195 [2024-10-15 14:18:47,525 INFO L431 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 [2024-10-15 14:18:47,525 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:47,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 91 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:18:47,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-10-15 14:18:47,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 191. [2024-10-15 14:18:47,537 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) [2024-10-15 14:18:47,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2024-10-15 14:18:47,539 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 181 [2024-10-15 14:18:47,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:47,539 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2024-10-15 14:18:47,539 INFO L472 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) [2024-10-15 14:18:47,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:47,540 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2024-10-15 14:18:47,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-10-15 14:18:47,541 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:47,541 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:47,559 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-10-15 14:18:47,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-10-15 14:18:47,741 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:47,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:47,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1913061035, now seen corresponding path program 43 times [2024-10-15 14:18:47,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:47,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654752540] [2024-10-15 14:18:47,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:47,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:48,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:48,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-15 14:18:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:48,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 14:18:48,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:48,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-15 14:18:48,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:48,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-15 14:18:48,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:48,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-15 14:18:48,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:48,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-15 14:18:48,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:48,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-15 14:18:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:48,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-15 14:18:48,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:48,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-15 14:18:48,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:48,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-15 14:18:48,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:48,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-15 14:18:48,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:48,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-15 14:18:48,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:48,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-15 14:18:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:48,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-10-15 14:18:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:48,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-10-15 14:18:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:48,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-10-15 14:18:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:48,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-10-15 14:18:48,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:48,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-10-15 14:18:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:48,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-10-15 14:18:48,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:48,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-10-15 14:18:48,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:48,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-10-15 14:18:48,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:48,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-10-15 14:18:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:48,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 717 proven. 317 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-10-15 14:18:48,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:48,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654752540] [2024-10-15 14:18:48,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654752540] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:48,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522698750] [2024-10-15 14:18:48,630 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 14:18:48,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:48,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:48,632 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) [2024-10-15 14:18:48,632 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-10-15 14:18:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:48,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-10-15 14:18:48,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:49,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-10-15 14:18:49,587 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:50,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-10-15 14:18:50,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522698750] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:50,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:50,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 74 [2024-10-15 14:18:50,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933992161] [2024-10-15 14:18:50,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:50,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-10-15 14:18:50,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:50,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-10-15 14:18:50,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1229, Invalid=4173, Unknown=0, NotChecked=0, Total=5402 [2024-10-15 14:18:50,298 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand has 74 states, 74 states have (on average 1.7297297297297298) internal successors, (128), 74 states have internal predecessors, (128), 47 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-10-15 14:18:50,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:50,608 INFO L93 Difference]: Finished difference Result 269 states and 293 transitions. [2024-10-15 14:18:50,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-10-15 14:18:50,608 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.7297297297297298) internal successors, (128), 74 states have internal predecessors, (128), 47 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 188 [2024-10-15 14:18:50,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:50,610 INFO L225 Difference]: With dead ends: 269 [2024-10-15 14:18:50,610 INFO L226 Difference]: Without dead ends: 192 [2024-10-15 14:18:50,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 353 SyntacticMatches, 45 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3454 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1229, Invalid=4173, Unknown=0, NotChecked=0, Total=5402 [2024-10-15 14:18:50,611 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:50,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 494 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 14:18:50,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-10-15 14:18:50,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2024-10-15 14:18:50,627 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) [2024-10-15 14:18:50,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 193 transitions. [2024-10-15 14:18:50,628 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 193 transitions. Word has length 188 [2024-10-15 14:18:50,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:50,629 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 193 transitions. [2024-10-15 14:18:50,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.7297297297297298) internal successors, (128), 74 states have internal predecessors, (128), 47 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-10-15 14:18:50,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:50,629 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 193 transitions. [2024-10-15 14:18:50,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-10-15 14:18:50,630 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:50,630 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:50,645 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:50,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-10-15 14:18:50,831 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:50,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:50,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1485402185, now seen corresponding path program 44 times [2024-10-15 14:18:50,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:50,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611286953] [2024-10-15 14:18:50,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:50,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:50,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:51,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:51,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-15 14:18:51,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:51,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-15 14:18:51,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:51,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-15 14:18:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:51,311 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-15 14:18:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:51,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-15 14:18:51,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:51,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-15 14:18:51,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:51,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-15 14:18:51,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:51,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-15 14:18:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:51,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-15 14:18:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:51,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-10-15 14:18:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:51,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-15 14:18:51,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:51,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-15 14:18:51,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:51,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-15 14:18:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:51,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-10-15 14:18:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:51,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-10-15 14:18:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:51,323 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-10-15 14:18:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:51,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-10-15 14:18:51,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:51,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-15 14:18:51,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:51,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-15 14:18:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:51,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-10-15 14:18:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:51,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-10-15 14:18:51,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:51,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-10-15 14:18:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:51,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 297 proven. 760 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-10-15 14:18:51,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:51,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611286953] [2024-10-15 14:18:51,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611286953] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:51,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381989363] [2024-10-15 14:18:51,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:18:51,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:51,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:51,334 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) [2024-10-15 14:18:51,335 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-10-15 14:18:51,407 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:18:51,408 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:51,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-10-15 14:18:51,411 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:51,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 320 proven. 737 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-10-15 14:18:51,532 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:52,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 320 proven. 737 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-10-15 14:18:52,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381989363] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:52,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:52,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 31 [2024-10-15 14:18:52,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134646029] [2024-10-15 14:18:52,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:52,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-15 14:18:52,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:52,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-15 14:18:52,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=592, Unknown=0, NotChecked=0, Total=930 [2024-10-15 14:18:52,059 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) [2024-10-15 14:18:52,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:52,179 INFO L93 Difference]: Finished difference Result 205 states and 207 transitions. [2024-10-15 14:18:52,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-15 14:18:52,180 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 [2024-10-15 14:18:52,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:52,181 INFO L225 Difference]: With dead ends: 205 [2024-10-15 14:18:52,181 INFO L226 Difference]: Without dead ends: 203 [2024-10-15 14:18:52,182 INFO L431 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 [2024-10-15 14:18:52,182 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:52,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 81 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:18:52,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-10-15 14:18:52,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 199. [2024-10-15 14:18:52,197 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) [2024-10-15 14:18:52,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2024-10-15 14:18:52,198 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 189 [2024-10-15 14:18:52,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:52,199 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2024-10-15 14:18:52,199 INFO L472 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) [2024-10-15 14:18:52,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:52,199 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2024-10-15 14:18:52,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-10-15 14:18:52,200 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:52,200 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:52,217 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-10-15 14:18:52,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,46 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:52,401 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:52,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:52,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1500180084, now seen corresponding path program 45 times [2024-10-15 14:18:52,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:52,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435894311] [2024-10-15 14:18:52,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:52,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:53,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:53,302 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-15 14:18:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:53,303 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-15 14:18:53,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:53,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-15 14:18:53,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:53,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-15 14:18:53,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:53,306 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-15 14:18:53,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:53,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-15 14:18:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:53,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-15 14:18:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:53,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-15 14:18:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:53,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-15 14:18:53,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:53,311 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-10-15 14:18:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:53,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-15 14:18:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:53,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-15 14:18:53,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:53,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-15 14:18:53,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:53,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-10-15 14:18:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:53,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-10-15 14:18:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:53,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-10-15 14:18:53,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:53,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-10-15 14:18:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:53,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-15 14:18:53,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:53,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-15 14:18:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:53,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-10-15 14:18:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:53,320 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-10-15 14:18:53,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:53,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-10-15 14:18:53,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:53,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-10-15 14:18:53,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:53,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 784 proven. 343 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-10-15 14:18:53,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:53,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435894311] [2024-10-15 14:18:53,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435894311] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:53,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891413504] [2024-10-15 14:18:53,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 14:18:53,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:53,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:53,326 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) [2024-10-15 14:18:53,327 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-10-15 14:18:53,413 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2024-10-15 14:18:53,413 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:53,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-10-15 14:18:53,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:54,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-10-15 14:18:54,347 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:55,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-10-15 14:18:55,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891413504] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:55,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:55,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 77 [2024-10-15 14:18:55,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983861109] [2024-10-15 14:18:55,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:55,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-10-15 14:18:55,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:55,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-10-15 14:18:55,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1330, Invalid=4522, Unknown=0, NotChecked=0, Total=5852 [2024-10-15 14:18:55,106 INFO L87 Difference]: Start difference. First operand 199 states and 200 transitions. Second operand has 77 states, 77 states have (on average 1.7272727272727273) internal successors, (133), 77 states have internal predecessors, (133), 49 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-10-15 14:18:55,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:55,378 INFO L93 Difference]: Finished difference Result 280 states and 305 transitions. [2024-10-15 14:18:55,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-10-15 14:18:55,378 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 1.7272727272727273) internal successors, (133), 77 states have internal predecessors, (133), 49 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Word has length 196 [2024-10-15 14:18:55,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:55,380 INFO L225 Difference]: With dead ends: 280 [2024-10-15 14:18:55,380 INFO L226 Difference]: Without dead ends: 200 [2024-10-15 14:18:55,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 368 SyntacticMatches, 47 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3749 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1330, Invalid=4522, Unknown=0, NotChecked=0, Total=5852 [2024-10-15 14:18:55,382 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:55,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 497 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:18:55,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-10-15 14:18:55,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2024-10-15 14:18:55,397 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) [2024-10-15 14:18:55,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 201 transitions. [2024-10-15 14:18:55,398 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 201 transitions. Word has length 196 [2024-10-15 14:18:55,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:55,398 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 201 transitions. [2024-10-15 14:18:55,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 1.7272727272727273) internal successors, (133), 77 states have internal predecessors, (133), 49 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-10-15 14:18:55,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:55,399 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 201 transitions. [2024-10-15 14:18:55,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-10-15 14:18:55,400 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:55,400 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:55,418 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:55,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,47 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:55,601 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:55,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:55,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1290217832, now seen corresponding path program 46 times [2024-10-15 14:18:55,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:55,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660893831] [2024-10-15 14:18:55,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:55,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:56,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:56,118 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-15 14:18:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:56,118 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-15 14:18:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:56,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-15 14:18:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:56,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-15 14:18:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:56,121 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-15 14:18:56,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:56,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-15 14:18:56,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:56,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-15 14:18:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:56,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-15 14:18:56,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:56,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-15 14:18:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:56,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-15 14:18:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:56,126 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-15 14:18:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:56,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-10-15 14:18:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:56,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-10-15 14:18:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:56,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-15 14:18:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:56,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-15 14:18:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:56,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-10-15 14:18:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:56,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-15 14:18:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:56,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-10-15 14:18:56,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:56,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-15 14:18:56,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:56,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-10-15 14:18:56,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:56,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-10-15 14:18:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:56,135 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-10-15 14:18:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:56,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-10-15 14:18:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:56,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 322 proven. 829 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-10-15 14:18:56,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:56,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660893831] [2024-10-15 14:18:56,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660893831] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:56,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748625268] [2024-10-15 14:18:56,137 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 14:18:56,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:56,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:56,139 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) [2024-10-15 14:18:56,140 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-10-15 14:18:56,215 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 14:18:56,215 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:56,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-10-15 14:18:56,219 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:56,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 346 proven. 805 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-10-15 14:18:56,338 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:56,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 346 proven. 805 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-10-15 14:18:56,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748625268] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:56,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:56,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 32 [2024-10-15 14:18:56,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642162465] [2024-10-15 14:18:56,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:56,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-15 14:18:56,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:56,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-15 14:18:56,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=628, Unknown=0, NotChecked=0, Total=992 [2024-10-15 14:18:56,884 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) [2024-10-15 14:18:57,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:57,031 INFO L93 Difference]: Finished difference Result 213 states and 215 transitions. [2024-10-15 14:18:57,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-15 14:18:57,031 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 [2024-10-15 14:18:57,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:57,033 INFO L225 Difference]: With dead ends: 213 [2024-10-15 14:18:57,033 INFO L226 Difference]: Without dead ends: 211 [2024-10-15 14:18:57,033 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 415 SyntacticMatches, 48 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=370, Invalid=686, Unknown=0, NotChecked=0, Total=1056 [2024-10-15 14:18:57,033 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:57,034 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 100 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:18:57,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-10-15 14:18:57,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 207. [2024-10-15 14:18:57,049 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) [2024-10-15 14:18:57,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2024-10-15 14:18:57,050 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 197 [2024-10-15 14:18:57,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:57,051 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2024-10-15 14:18:57,051 INFO L472 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) [2024-10-15 14:18:57,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:57,051 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2024-10-15 14:18:57,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-10-15 14:18:57,052 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:57,052 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:57,068 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-10-15 14:18:57,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-10-15 14:18:57,253 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:57,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:57,253 INFO L85 PathProgramCache]: Analyzing trace with hash 2145418123, now seen corresponding path program 47 times [2024-10-15 14:18:57,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:57,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266228425] [2024-10-15 14:18:57,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:57,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:58,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:58,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-15 14:18:58,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:58,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-15 14:18:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:58,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-15 14:18:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:58,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-15 14:18:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:58,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-15 14:18:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:58,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-15 14:18:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:58,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-15 14:18:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:58,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-15 14:18:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:58,230 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-15 14:18:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:58,232 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-15 14:18:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:58,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-15 14:18:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:58,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-10-15 14:18:58,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:58,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-10-15 14:18:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:58,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-15 14:18:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:58,236 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-15 14:18:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:58,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-10-15 14:18:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:58,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-15 14:18:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:58,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-10-15 14:18:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:58,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-15 14:18:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:58,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-10-15 14:18:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:58,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-10-15 14:18:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:58,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-10-15 14:18:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:58,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-10-15 14:18:58,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:58,244 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-10-15 14:18:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:58,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 854 proven. 370 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-10-15 14:18:58,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:58,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266228425] [2024-10-15 14:18:58,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266228425] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:58,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747671455] [2024-10-15 14:18:58,246 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 14:18:58,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:58,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:58,247 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) [2024-10-15 14:18:58,248 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-10-15 14:18:58,338 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2024-10-15 14:18:58,338 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:58,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-10-15 14:18:58,343 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:59,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-10-15 14:18:59,355 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:19:00,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-10-15 14:19:00,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747671455] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:19:00,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:19:00,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 80 [2024-10-15 14:19:00,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660821363] [2024-10-15 14:19:00,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:19:00,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-10-15 14:19:00,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:19:00,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-10-15 14:19:00,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1435, Invalid=4885, Unknown=0, NotChecked=0, Total=6320 [2024-10-15 14:19:00,175 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand has 80 states, 80 states have (on average 1.725) internal successors, (138), 80 states have internal predecessors, (138), 51 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-10-15 14:19:00,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:19:00,440 INFO L93 Difference]: Finished difference Result 291 states and 317 transitions. [2024-10-15 14:19:00,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-10-15 14:19:00,440 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.725) internal successors, (138), 80 states have internal predecessors, (138), 51 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Word has length 204 [2024-10-15 14:19:00,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:19:00,442 INFO L225 Difference]: With dead ends: 291 [2024-10-15 14:19:00,442 INFO L226 Difference]: Without dead ends: 208 [2024-10-15 14:19:00,442 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 383 SyntacticMatches, 49 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4056 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1435, Invalid=4885, Unknown=0, NotChecked=0, Total=6320 [2024-10-15 14:19:00,442 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 0 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:19:00,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 386 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:19:00,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-10-15 14:19:00,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2024-10-15 14:19:00,459 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) [2024-10-15 14:19:00,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 209 transitions. [2024-10-15 14:19:00,461 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 209 transitions. Word has length 204 [2024-10-15 14:19:00,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:19:00,461 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 209 transitions. [2024-10-15 14:19:00,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 1.725) internal successors, (138), 80 states have internal predecessors, (138), 51 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-10-15 14:19:00,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:00,462 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 209 transitions. [2024-10-15 14:19:00,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-10-15 14:19:00,463 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:19:00,463 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:19:00,480 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-10-15 14:19:00,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-10-15 14:19:00,664 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:19:00,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:00,664 INFO L85 PathProgramCache]: Analyzing trace with hash -167480169, now seen corresponding path program 48 times [2024-10-15 14:19:00,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:19:00,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533325398] [2024-10-15 14:19:00,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:19:00,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:19:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:01,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:19:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:01,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-15 14:19:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:01,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-15 14:19:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:01,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-15 14:19:01,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:01,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-15 14:19:01,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:01,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-15 14:19:01,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:01,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-15 14:19:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:01,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-15 14:19:01,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:01,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-10-15 14:19:01,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:01,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-15 14:19:01,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:01,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-15 14:19:01,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:01,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-10-15 14:19:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:01,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-10-15 14:19:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:01,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-15 14:19:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:01,260 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-15 14:19:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:01,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-15 14:19:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:01,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-10-15 14:19:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:01,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-10-15 14:19:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:01,264 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-10-15 14:19:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:01,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-10-15 14:19:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:01,266 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-10-15 14:19:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:01,267 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-10-15 14:19:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:01,267 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-10-15 14:19:01,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:01,268 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-10-15 14:19:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:01,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-10-15 14:19:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:01,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 348 proven. 901 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-10-15 14:19:01,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:19:01,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533325398] [2024-10-15 14:19:01,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533325398] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:19:01,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054668006] [2024-10-15 14:19:01,271 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 14:19:01,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:01,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:19:01,272 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) [2024-10-15 14:19:01,273 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-10-15 14:19:01,367 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2024-10-15 14:19:01,367 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:19:01,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-10-15 14:19:01,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:19:01,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 373 proven. 876 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-10-15 14:19:01,486 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:19:02,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 373 proven. 876 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-10-15 14:19:02,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054668006] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:19:02,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:19:02,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 33 [2024-10-15 14:19:02,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235829036] [2024-10-15 14:19:02,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:19:02,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-15 14:19:02,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:19:02,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-15 14:19:02,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=665, Unknown=0, NotChecked=0, Total=1056 [2024-10-15 14:19:02,083 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) [2024-10-15 14:19:02,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:19:02,214 INFO L93 Difference]: Finished difference Result 221 states and 223 transitions. [2024-10-15 14:19:02,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-15 14:19:02,215 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 [2024-10-15 14:19:02,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:19:02,216 INFO L225 Difference]: With dead ends: 221 [2024-10-15 14:19:02,216 INFO L226 Difference]: Without dead ends: 219 [2024-10-15 14:19:02,217 INFO L431 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 [2024-10-15 14:19:02,217 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:19:02,217 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 111 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:19:02,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-10-15 14:19:02,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 215. [2024-10-15 14:19:02,234 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) [2024-10-15 14:19:02,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 216 transitions. [2024-10-15 14:19:02,235 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 216 transitions. Word has length 205 [2024-10-15 14:19:02,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:19:02,235 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 216 transitions. [2024-10-15 14:19:02,235 INFO L472 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) [2024-10-15 14:19:02,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:02,236 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 216 transitions. [2024-10-15 14:19:02,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-10-15 14:19:02,236 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:19:02,237 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:19:02,254 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-10-15 14:19:02,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,50 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:02,441 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:19:02,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:02,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1067061076, now seen corresponding path program 49 times [2024-10-15 14:19:02,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:19:02,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755423807] [2024-10-15 14:19:02,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:19:02,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:19:02,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:03,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:19:03,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:03,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-15 14:19:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:03,510 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-15 14:19:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:03,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-15 14:19:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:03,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-15 14:19:03,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:03,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-15 14:19:03,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:03,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-15 14:19:03,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:03,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-15 14:19:03,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:03,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-10-15 14:19:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:03,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-15 14:19:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:03,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-15 14:19:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:03,520 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-10-15 14:19:03,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:03,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-10-15 14:19:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:03,523 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-15 14:19:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:03,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-15 14:19:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:03,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-15 14:19:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:03,525 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-10-15 14:19:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:03,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-10-15 14:19:03,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:03,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-10-15 14:19:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:03,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-10-15 14:19:03,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:03,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-10-15 14:19:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:03,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-10-15 14:19:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:03,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-10-15 14:19:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:03,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-10-15 14:19:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:03,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-10-15 14:19:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:03,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-10-15 14:19:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:03,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 927 proven. 398 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-10-15 14:19:03,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:19:03,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755423807] [2024-10-15 14:19:03,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755423807] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:19:03,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431068047] [2024-10-15 14:19:03,540 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 14:19:03,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:03,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:19:03,542 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) [2024-10-15 14:19:03,542 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-10-15 14:19:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:03,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-10-15 14:19:03,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:19:04,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-10-15 14:19:04,687 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:19:05,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-10-15 14:19:05,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431068047] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:19:05,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:19:05,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 83 [2024-10-15 14:19:05,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487009289] [2024-10-15 14:19:05,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:19:05,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-10-15 14:19:05,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:19:05,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-10-15 14:19:05,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1544, Invalid=5262, Unknown=0, NotChecked=0, Total=6806 [2024-10-15 14:19:05,593 INFO L87 Difference]: Start difference. First operand 215 states and 216 transitions. Second operand has 83 states, 83 states have (on average 1.7228915662650603) internal successors, (143), 83 states have internal predecessors, (143), 53 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-10-15 14:19:05,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:19:05,872 INFO L93 Difference]: Finished difference Result 302 states and 329 transitions. [2024-10-15 14:19:05,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-10-15 14:19:05,873 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 1.7228915662650603) internal successors, (143), 83 states have internal predecessors, (143), 53 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Word has length 212 [2024-10-15 14:19:05,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:19:05,875 INFO L225 Difference]: With dead ends: 302 [2024-10-15 14:19:05,875 INFO L226 Difference]: Without dead ends: 216 [2024-10-15 14:19:05,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 398 SyntacticMatches, 51 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4375 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1544, Invalid=5262, Unknown=0, NotChecked=0, Total=6806 [2024-10-15 14:19:05,876 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 0 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:19:05,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 399 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:19:05,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-10-15 14:19:05,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2024-10-15 14:19:05,893 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) [2024-10-15 14:19:05,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 217 transitions. [2024-10-15 14:19:05,894 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 217 transitions. Word has length 212 [2024-10-15 14:19:05,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:19:05,895 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 217 transitions. [2024-10-15 14:19:05,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 1.7228915662650603) internal successors, (143), 83 states have internal predecessors, (143), 53 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-10-15 14:19:05,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:05,895 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 217 transitions. [2024-10-15 14:19:05,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-10-15 14:19:05,896 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:19:05,896 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:19:05,915 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-10-15 14:19:06,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2024-10-15 14:19:06,097 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:19:06,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:06,097 INFO L85 PathProgramCache]: Analyzing trace with hash -424272456, now seen corresponding path program 50 times [2024-10-15 14:19:06,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:19:06,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277333835] [2024-10-15 14:19:06,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:19:06,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:19:06,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:06,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:19:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:06,772 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-15 14:19:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:06,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-15 14:19:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:06,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-15 14:19:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:06,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-15 14:19:06,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:06,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-15 14:19:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:06,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-15 14:19:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:06,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-15 14:19:06,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:06,781 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-15 14:19:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:06,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-15 14:19:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:06,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-10-15 14:19:06,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:06,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-15 14:19:06,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:06,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-15 14:19:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:06,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-10-15 14:19:06,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:06,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-15 14:19:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:06,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-10-15 14:19:06,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:06,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-10-15 14:19:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:06,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-10-15 14:19:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:06,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-15 14:19:06,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:06,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-10-15 14:19:06,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:06,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-10-15 14:19:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:06,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-10-15 14:19:06,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:06,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-10-15 14:19:06,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:06,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-10-15 14:19:06,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:06,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-10-15 14:19:06,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:06,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-10-15 14:19:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:06,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 375 proven. 976 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-10-15 14:19:06,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:19:06,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277333835] [2024-10-15 14:19:06,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277333835] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:19:06,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643654023] [2024-10-15 14:19:06,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:19:06,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:06,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:19:06,805 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) [2024-10-15 14:19:06,807 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-10-15 14:19:06,897 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:19:06,898 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:19:06,899 INFO L255 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-10-15 14:19:06,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:19:07,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 401 proven. 950 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-10-15 14:19:07,042 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:19:07,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 401 proven. 950 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-10-15 14:19:07,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643654023] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:19:07,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:19:07,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 34 [2024-10-15 14:19:07,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342391723] [2024-10-15 14:19:07,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:19:07,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-15 14:19:07,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:19:07,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-15 14:19:07,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=703, Unknown=0, NotChecked=0, Total=1122 [2024-10-15 14:19:07,696 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) [2024-10-15 14:19:07,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:19:07,829 INFO L93 Difference]: Finished difference Result 229 states and 231 transitions. [2024-10-15 14:19:07,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-15 14:19:07,830 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 [2024-10-15 14:19:07,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:19:07,831 INFO L225 Difference]: With dead ends: 229 [2024-10-15 14:19:07,831 INFO L226 Difference]: Without dead ends: 227 [2024-10-15 14:19:07,831 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 447 SyntacticMatches, 54 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=425, Invalid=765, Unknown=0, NotChecked=0, Total=1190 [2024-10-15 14:19:07,832 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:19:07,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 91 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:19:07,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-10-15 14:19:07,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 223. [2024-10-15 14:19:07,849 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) [2024-10-15 14:19:07,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 224 transitions. [2024-10-15 14:19:07,850 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 224 transitions. Word has length 213 [2024-10-15 14:19:07,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:19:07,851 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 224 transitions. [2024-10-15 14:19:07,851 INFO L472 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) [2024-10-15 14:19:07,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:07,851 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 224 transitions. [2024-10-15 14:19:07,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-10-15 14:19:07,852 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:19:07,852 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:19:07,869 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-10-15 14:19:08,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,52 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:08,053 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:19:08,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:08,053 INFO L85 PathProgramCache]: Analyzing trace with hash -516231061, now seen corresponding path program 51 times [2024-10-15 14:19:08,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:19:08,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567397684] [2024-10-15 14:19:08,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:19:08,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:19:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:09,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:19:09,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:09,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-15 14:19:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:09,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-15 14:19:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:09,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-15 14:19:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:09,166 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-15 14:19:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:09,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-15 14:19:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:09,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-15 14:19:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:09,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-15 14:19:09,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:09,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-15 14:19:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:09,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-15 14:19:09,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:09,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-10-15 14:19:09,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:09,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-15 14:19:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:09,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-15 14:19:09,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:09,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-10-15 14:19:09,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:09,176 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-15 14:19:09,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:09,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-10-15 14:19:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:09,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-10-15 14:19:09,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:09,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-10-15 14:19:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:09,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-15 14:19:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:09,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-10-15 14:19:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:09,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-10-15 14:19:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:09,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-10-15 14:19:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:09,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-10-15 14:19:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:09,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-10-15 14:19:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:09,185 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-10-15 14:19:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:09,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-10-15 14:19:09,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:09,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-10-15 14:19:09,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:09,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1003 proven. 427 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-10-15 14:19:09,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:19:09,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567397684] [2024-10-15 14:19:09,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567397684] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:19:09,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631632133] [2024-10-15 14:19:09,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 14:19:09,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:09,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:19:09,190 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) [2024-10-15 14:19:09,191 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-10-15 14:19:09,289 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2024-10-15 14:19:09,289 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:19:09,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-10-15 14:19:09,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:19:10,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-10-15 14:19:10,433 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:19:11,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-10-15 14:19:11,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631632133] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:19:11,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:19:11,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57, 57] total 86 [2024-10-15 14:19:11,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099816990] [2024-10-15 14:19:11,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:19:11,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-10-15 14:19:11,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:19:11,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-10-15 14:19:11,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1657, Invalid=5653, Unknown=0, NotChecked=0, Total=7310 [2024-10-15 14:19:11,372 INFO L87 Difference]: Start difference. First operand 223 states and 224 transitions. Second operand has 86 states, 86 states have (on average 1.7209302325581395) internal successors, (148), 86 states have internal predecessors, (148), 55 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-10-15 14:19:11,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:19:11,694 INFO L93 Difference]: Finished difference Result 313 states and 341 transitions. [2024-10-15 14:19:11,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-10-15 14:19:11,695 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 1.7209302325581395) internal successors, (148), 86 states have internal predecessors, (148), 55 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Word has length 220 [2024-10-15 14:19:11,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:19:11,696 INFO L225 Difference]: With dead ends: 313 [2024-10-15 14:19:11,696 INFO L226 Difference]: Without dead ends: 224 [2024-10-15 14:19:11,697 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 413 SyntacticMatches, 53 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4706 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1657, Invalid=5653, Unknown=0, NotChecked=0, Total=7310 [2024-10-15 14:19:11,698 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 0 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 14:19:11,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 412 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 14:19:11,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-10-15 14:19:11,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2024-10-15 14:19:11,731 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) [2024-10-15 14:19:11,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 225 transitions. [2024-10-15 14:19:11,733 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 225 transitions. Word has length 220 [2024-10-15 14:19:11,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:19:11,733 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 225 transitions. [2024-10-15 14:19:11,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 1.7209302325581395) internal successors, (148), 86 states have internal predecessors, (148), 55 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-10-15 14:19:11,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:11,734 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 225 transitions. [2024-10-15 14:19:11,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-10-15 14:19:11,735 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:19:11,735 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:19:11,753 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2024-10-15 14:19:11,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,53 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:11,935 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:19:11,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:11,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1304211081, now seen corresponding path program 52 times [2024-10-15 14:19:11,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:19:11,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376922602] [2024-10-15 14:19:11,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:19:11,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:19:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:12,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:19:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:12,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-15 14:19:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:12,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-15 14:19:12,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:12,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-15 14:19:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:12,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-15 14:19:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:12,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-15 14:19:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:12,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-15 14:19:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:12,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-15 14:19:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:12,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-15 14:19:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:12,594 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-15 14:19:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:12,595 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-15 14:19:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:12,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-15 14:19:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:12,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-15 14:19:12,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:12,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-10-15 14:19:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:12,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-10-15 14:19:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:12,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-10-15 14:19:12,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:12,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-10-15 14:19:12,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:12,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-10-15 14:19:12,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:12,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-10-15 14:19:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:12,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-10-15 14:19:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:12,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-10-15 14:19:12,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:12,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-10-15 14:19:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:12,606 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-10-15 14:19:12,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:12,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-10-15 14:19:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:12,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-10-15 14:19:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:12,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-10-15 14:19:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:12,609 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-10-15 14:19:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:12,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 403 proven. 1054 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-10-15 14:19:12,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:19:12,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376922602] [2024-10-15 14:19:12,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376922602] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:19:12,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834604185] [2024-10-15 14:19:12,611 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 14:19:12,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:12,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:19:12,612 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) [2024-10-15 14:19:12,613 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-10-15 14:19:12,696 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 14:19:12,696 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:19:12,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-10-15 14:19:12,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:19:12,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 430 proven. 1027 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-10-15 14:19:12,831 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:19:13,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 430 proven. 1027 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-10-15 14:19:13,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834604185] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:19:13,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:19:13,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 35 [2024-10-15 14:19:13,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763490836] [2024-10-15 14:19:13,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:19:13,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-10-15 14:19:13,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:19:13,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-10-15 14:19:13,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=448, Invalid=742, Unknown=0, NotChecked=0, Total=1190 [2024-10-15 14:19:13,495 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) [2024-10-15 14:19:13,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:19:13,645 INFO L93 Difference]: Finished difference Result 237 states and 239 transitions. [2024-10-15 14:19:13,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-10-15 14:19:13,645 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 [2024-10-15 14:19:13,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:19:13,647 INFO L225 Difference]: With dead ends: 237 [2024-10-15 14:19:13,647 INFO L226 Difference]: Without dead ends: 235 [2024-10-15 14:19:13,647 INFO L431 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 [2024-10-15 14:19:13,648 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:19:13,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 102 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:19:13,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-10-15 14:19:13,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 231. [2024-10-15 14:19:13,667 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) [2024-10-15 14:19:13,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2024-10-15 14:19:13,668 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 221 [2024-10-15 14:19:13,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:19:13,669 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2024-10-15 14:19:13,669 INFO L472 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) [2024-10-15 14:19:13,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:13,669 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2024-10-15 14:19:13,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-10-15 14:19:13,670 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:19:13,670 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:19:13,687 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2024-10-15 14:19:13,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2024-10-15 14:19:13,873 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:19:13,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:13,873 INFO L85 PathProgramCache]: Analyzing trace with hash -906045492, now seen corresponding path program 53 times [2024-10-15 14:19:13,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:19:13,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107163082] [2024-10-15 14:19:13,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:19:13,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:19:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:19:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-15 14:19:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-15 14:19:15,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,353 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-15 14:19:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,354 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-15 14:19:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,356 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-15 14:19:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,357 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-15 14:19:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,358 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-15 14:19:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-15 14:19:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-15 14:19:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-15 14:19:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-15 14:19:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-15 14:19:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-10-15 14:19:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-10-15 14:19:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-10-15 14:19:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-10-15 14:19:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-10-15 14:19:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,377 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-10-15 14:19:15,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,379 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-10-15 14:19:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,381 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-10-15 14:19:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,382 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-10-15 14:19:15,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,383 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-10-15 14:19:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,384 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-10-15 14:19:15,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,385 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-10-15 14:19:15,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,386 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-10-15 14:19:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-10-15 14:19:15,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,388 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-10-15 14:19:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1082 proven. 457 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-10-15 14:19:15,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:19:15,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107163082] [2024-10-15 14:19:15,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107163082] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:19:15,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926685563] [2024-10-15 14:19:15,390 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 14:19:15,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:15,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:19:15,392 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) [2024-10-15 14:19:15,394 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-10-15 14:19:15,498 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2024-10-15 14:19:15,498 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:19:15,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-10-15 14:19:15,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:19:16,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-10-15 14:19:16,738 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:19:17,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-10-15 14:19:17,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926685563] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:19:17,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:19:17,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59, 59] total 89 [2024-10-15 14:19:17,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663526525] [2024-10-15 14:19:17,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:19:17,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2024-10-15 14:19:17,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:19:17,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2024-10-15 14:19:17,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1774, Invalid=6058, Unknown=0, NotChecked=0, Total=7832 [2024-10-15 14:19:17,728 INFO L87 Difference]: Start difference. First operand 231 states and 232 transitions. Second operand has 89 states, 89 states have (on average 1.7191011235955056) internal successors, (153), 89 states have internal predecessors, (153), 57 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-10-15 14:19:18,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:19:18,044 INFO L93 Difference]: Finished difference Result 324 states and 353 transitions. [2024-10-15 14:19:18,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-10-15 14:19:18,045 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 1.7191011235955056) internal successors, (153), 89 states have internal predecessors, (153), 57 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) Word has length 228 [2024-10-15 14:19:18,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:19:18,046 INFO L225 Difference]: With dead ends: 324 [2024-10-15 14:19:18,046 INFO L226 Difference]: Without dead ends: 232 [2024-10-15 14:19:18,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 428 SyntacticMatches, 55 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5049 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1774, Invalid=6058, Unknown=0, NotChecked=0, Total=7832 [2024-10-15 14:19:18,047 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 14:19:18,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 495 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 14:19:18,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-10-15 14:19:18,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2024-10-15 14:19:18,066 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) [2024-10-15 14:19:18,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 233 transitions. [2024-10-15 14:19:18,067 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 233 transitions. Word has length 228 [2024-10-15 14:19:18,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:19:18,067 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 233 transitions. [2024-10-15 14:19:18,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 1.7191011235955056) internal successors, (153), 89 states have internal predecessors, (153), 57 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-10-15 14:19:18,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:18,068 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 233 transitions. [2024-10-15 14:19:18,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-10-15 14:19:18,069 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:19:18,069 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:19:18,086 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2024-10-15 14:19:18,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,55 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:18,270 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:19:18,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:18,270 INFO L85 PathProgramCache]: Analyzing trace with hash -196383528, now seen corresponding path program 54 times [2024-10-15 14:19:18,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:19:18,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183038765] [2024-10-15 14:19:18,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:19:18,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:19:18,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:18,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:19:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:18,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-15 14:19:18,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:18,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-15 14:19:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:18,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-15 14:19:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:18,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-15 14:19:18,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:18,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 14:19:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:18,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-15 14:19:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:18,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-15 14:19:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:18,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-15 14:19:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:18,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-15 14:19:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:18,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-10-15 14:19:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:18,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-15 14:19:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:18,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-10-15 14:19:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:18,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-15 14:19:18,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:18,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-10-15 14:19:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:18,958 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-10-15 14:19:18,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:18,959 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-10-15 14:19:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:18,960 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-15 14:19:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:18,961 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-10-15 14:19:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:18,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-10-15 14:19:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:18,964 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-10-15 14:19:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:18,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-10-15 14:19:18,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:18,967 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-10-15 14:19:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:18,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-10-15 14:19:18,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:18,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-10-15 14:19:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:18,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-10-15 14:19:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:18,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-10-15 14:19:18,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:18,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-10-15 14:19:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:18,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 432 proven. 1135 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-10-15 14:19:18,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:19:18,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183038765] [2024-10-15 14:19:18,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183038765] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:19:18,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728318872] [2024-10-15 14:19:18,975 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 14:19:18,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:18,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:19:18,977 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) [2024-10-15 14:19:18,980 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-10-15 14:19:19,113 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2024-10-15 14:19:19,113 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:19:19,117 INFO L255 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-10-15 14:19:19,120 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:19:19,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 460 proven. 1107 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-10-15 14:19:19,277 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:19:19,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 460 proven. 1107 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-10-15 14:19:19,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728318872] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:19:19,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:19:19,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 36 [2024-10-15 14:19:19,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651281769] [2024-10-15 14:19:19,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:19:19,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-15 14:19:19,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:19:19,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-15 14:19:19,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=478, Invalid=782, Unknown=0, NotChecked=0, Total=1260 [2024-10-15 14:19:19,988 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) [2024-10-15 14:19:20,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:19:20,150 INFO L93 Difference]: Finished difference Result 245 states and 247 transitions. [2024-10-15 14:19:20,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-10-15 14:19:20,151 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 [2024-10-15 14:19:20,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:19:20,153 INFO L225 Difference]: With dead ends: 245 [2024-10-15 14:19:20,153 INFO L226 Difference]: Without dead ends: 243 [2024-10-15 14:19:20,153 INFO L431 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 [2024-10-15 14:19:20,153 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:19:20,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 86 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:19:20,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-10-15 14:19:20,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 239. [2024-10-15 14:19:20,171 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) [2024-10-15 14:19:20,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 240 transitions. [2024-10-15 14:19:20,172 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 240 transitions. Word has length 229 [2024-10-15 14:19:20,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:19:20,173 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 240 transitions. [2024-10-15 14:19:20,173 INFO L472 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) [2024-10-15 14:19:20,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:20,173 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 240 transitions. [2024-10-15 14:19:20,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-10-15 14:19:20,174 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:19:20,174 INFO L215 NwaCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:19:20,192 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2024-10-15 14:19:20,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,56 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:20,379 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:19:20,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:20,379 INFO L85 PathProgramCache]: Analyzing trace with hash -888906421, now seen corresponding path program 55 times [2024-10-15 14:19:20,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:19:20,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773807157] [2024-10-15 14:19:20,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:19:20,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:19:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:21,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:19:21,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:21,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-15 14:19:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:21,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-15 14:19:21,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:21,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-15 14:19:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:21,642 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-15 14:19:21,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:21,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 14:19:21,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:21,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-15 14:19:21,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:21,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-15 14:19:21,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:21,646 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-15 14:19:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:21,646 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-15 14:19:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:21,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-10-15 14:19:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:21,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-15 14:19:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:21,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-10-15 14:19:21,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:21,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-15 14:19:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:21,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-10-15 14:19:21,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:21,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-10-15 14:19:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:21,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-10-15 14:19:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:21,654 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-15 14:19:21,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:21,654 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-10-15 14:19:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:21,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-10-15 14:19:21,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:21,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-10-15 14:19:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:21,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-10-15 14:19:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:21,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-10-15 14:19:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:21,659 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-10-15 14:19:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:21,660 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-10-15 14:19:21,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:21,660 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-10-15 14:19:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:21,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-10-15 14:19:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:21,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-10-15 14:19:21,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:21,663 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-10-15 14:19:21,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:21,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1164 proven. 488 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-10-15 14:19:21,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:19:21,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773807157] [2024-10-15 14:19:21,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773807157] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:19:21,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177619599] [2024-10-15 14:19:21,665 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 14:19:21,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:21,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:19:21,666 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) [2024-10-15 14:19:21,667 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-10-15 14:19:21,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:21,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-10-15 14:19:21,755 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:19:23,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-10-15 14:19:23,148 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:19:24,196 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-10-15 14:19:24,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177619599] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:19:24,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:19:24,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 92 [2024-10-15 14:19:24,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066597537] [2024-10-15 14:19:24,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:19:24,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2024-10-15 14:19:24,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:19:24,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2024-10-15 14:19:24,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1895, Invalid=6477, Unknown=0, NotChecked=0, Total=8372 [2024-10-15 14:19:24,198 INFO L87 Difference]: Start difference. First operand 239 states and 240 transitions. Second operand has 92 states, 92 states have (on average 1.7173913043478262) internal successors, (158), 92 states have internal predecessors, (158), 59 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2024-10-15 14:19:24,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:19:24,634 INFO L93 Difference]: Finished difference Result 335 states and 365 transitions. [2024-10-15 14:19:24,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-10-15 14:19:24,635 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 1.7173913043478262) internal successors, (158), 92 states have internal predecessors, (158), 59 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Word has length 236 [2024-10-15 14:19:24,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:19:24,637 INFO L225 Difference]: With dead ends: 335 [2024-10-15 14:19:24,637 INFO L226 Difference]: Without dead ends: 240 [2024-10-15 14:19:24,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 443 SyntacticMatches, 57 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5404 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1895, Invalid=6477, Unknown=0, NotChecked=0, Total=8372 [2024-10-15 14:19:24,638 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 14:19:24,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 791 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 14:19:24,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-10-15 14:19:24,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2024-10-15 14:19:24,657 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) [2024-10-15 14:19:24,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 241 transitions. [2024-10-15 14:19:24,658 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 241 transitions. Word has length 236 [2024-10-15 14:19:24,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:19:24,658 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 241 transitions. [2024-10-15 14:19:24,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 1.7173913043478262) internal successors, (158), 92 states have internal predecessors, (158), 59 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2024-10-15 14:19:24,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:24,659 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 241 transitions. [2024-10-15 14:19:24,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-10-15 14:19:24,660 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:19:24,660 INFO L215 NwaCegarLoop]: trace histogram [29, 29, 29, 29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:19:24,678 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2024-10-15 14:19:24,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-10-15 14:19:24,862 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:19:24,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:24,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1323227561, now seen corresponding path program 56 times [2024-10-15 14:19:24,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:19:24,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021957914] [2024-10-15 14:19:24,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:19:24,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:19:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:25,664 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:19:25,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:25,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 14:19:25,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:25,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-15 14:19:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:25,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-15 14:19:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:25,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-15 14:19:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:25,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-15 14:19:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:25,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-15 14:19:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:25,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-15 14:19:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:25,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-15 14:19:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:25,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-15 14:19:25,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:25,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-15 14:19:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:25,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-15 14:19:25,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:25,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-15 14:19:25,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:25,679 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-10-15 14:19:25,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:25,679 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-10-15 14:19:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:25,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-10-15 14:19:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:25,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-10-15 14:19:25,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:25,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-10-15 14:19:25,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:25,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-10-15 14:19:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:25,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-10-15 14:19:25,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:25,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-10-15 14:19:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:25,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-10-15 14:19:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:25,686 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-10-15 14:19:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:25,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-10-15 14:19:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:25,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-10-15 14:19:25,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:25,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-10-15 14:19:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:25,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-10-15 14:19:25,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:25,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-10-15 14:19:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:25,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-10-15 14:19:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:25,692 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 462 proven. 1219 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-10-15 14:19:25,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:19:25,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021957914] [2024-10-15 14:19:25,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021957914] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:19:25,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131876507] [2024-10-15 14:19:25,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:19:25,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:25,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:19:25,694 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) [2024-10-15 14:19:25,695 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-10-15 14:19:25,795 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:19:25,795 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:19:25,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-10-15 14:19:25,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:19:25,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 491 proven. 1190 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-10-15 14:19:25,985 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:19:26,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 491 proven. 1190 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-10-15 14:19:26,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131876507] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:19:26,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:19:26,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 37 [2024-10-15 14:19:26,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562347549] [2024-10-15 14:19:26,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:19:26,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-10-15 14:19:26,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:19:26,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-10-15 14:19:26,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=509, Invalid=823, Unknown=0, NotChecked=0, Total=1332 [2024-10-15 14:19:26,777 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) [2024-10-15 14:19:26,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:19:26,941 INFO L93 Difference]: Finished difference Result 253 states and 255 transitions. [2024-10-15 14:19:26,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-10-15 14:19:26,942 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 [2024-10-15 14:19:26,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:19:26,943 INFO L225 Difference]: With dead ends: 253 [2024-10-15 14:19:26,943 INFO L226 Difference]: Without dead ends: 251 [2024-10-15 14:19:26,943 INFO L431 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 [2024-10-15 14:19:26,944 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:19:26,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 125 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:19:26,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-10-15 14:19:26,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 247. [2024-10-15 14:19:26,963 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) [2024-10-15 14:19:26,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 248 transitions. [2024-10-15 14:19:26,964 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 248 transitions. Word has length 237 [2024-10-15 14:19:26,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:19:26,965 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 248 transitions. [2024-10-15 14:19:26,965 INFO L472 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) [2024-10-15 14:19:26,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:26,965 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 248 transitions. [2024-10-15 14:19:26,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-10-15 14:19:26,966 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:19:26,967 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:19:26,985 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2024-10-15 14:19:27,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-10-15 14:19:27,168 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:19:27,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:27,168 INFO L85 PathProgramCache]: Analyzing trace with hash 649185004, now seen corresponding path program 57 times [2024-10-15 14:19:27,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:19:27,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226371625] [2024-10-15 14:19:27,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:19:27,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:19:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:28,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:19:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:28,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 14:19:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:28,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-15 14:19:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:28,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-15 14:19:28,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:28,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-15 14:19:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:28,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-15 14:19:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:28,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-15 14:19:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:28,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-15 14:19:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:28,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-15 14:19:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:28,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-15 14:19:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:28,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-15 14:19:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:28,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-15 14:19:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:28,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-15 14:19:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:28,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-10-15 14:19:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:28,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-10-15 14:19:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:28,634 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-10-15 14:19:28,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:28,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-10-15 14:19:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:28,636 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-10-15 14:19:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:28,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-10-15 14:19:28,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:28,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-10-15 14:19:28,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:28,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-10-15 14:19:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:28,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-10-15 14:19:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:28,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-10-15 14:19:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:28,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-10-15 14:19:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:28,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-10-15 14:19:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:28,646 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-10-15 14:19:28,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:28,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-10-15 14:19:28,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:28,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-10-15 14:19:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:28,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-10-15 14:19:28,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:28,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-10-15 14:19:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:28,652 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1249 proven. 520 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-10-15 14:19:28,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:19:28,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226371625] [2024-10-15 14:19:28,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226371625] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:19:28,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707411870] [2024-10-15 14:19:28,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 14:19:28,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:28,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:19:28,654 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) [2024-10-15 14:19:28,654 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-10-15 14:19:28,761 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2024-10-15 14:19:28,761 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:19:28,763 INFO L255 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-10-15 14:19:28,774 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:19:30,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-10-15 14:19:30,165 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:19:31,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-10-15 14:19:31,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707411870] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:19:31,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:19:31,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 95 [2024-10-15 14:19:31,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214985500] [2024-10-15 14:19:31,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:19:31,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2024-10-15 14:19:31,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:19:31,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2024-10-15 14:19:31,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2020, Invalid=6910, Unknown=0, NotChecked=0, Total=8930 [2024-10-15 14:19:31,279 INFO L87 Difference]: Start difference. First operand 247 states and 248 transitions. Second operand has 95 states, 95 states have (on average 1.7157894736842105) internal successors, (163), 95 states have internal predecessors, (163), 61 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-10-15 14:19:31,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:19:31,667 INFO L93 Difference]: Finished difference Result 346 states and 377 transitions. [2024-10-15 14:19:31,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-10-15 14:19:31,668 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 1.7157894736842105) internal successors, (163), 95 states have internal predecessors, (163), 61 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) Word has length 244 [2024-10-15 14:19:31,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:19:31,670 INFO L225 Difference]: With dead ends: 346 [2024-10-15 14:19:31,670 INFO L226 Difference]: Without dead ends: 248 [2024-10-15 14:19:31,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 458 SyntacticMatches, 59 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5771 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2020, Invalid=6910, Unknown=0, NotChecked=0, Total=8930 [2024-10-15 14:19:31,671 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 14:19:31,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 770 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 14:19:31,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-10-15 14:19:31,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2024-10-15 14:19:31,693 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) [2024-10-15 14:19:31,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 249 transitions. [2024-10-15 14:19:31,695 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 249 transitions. Word has length 244 [2024-10-15 14:19:31,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:19:31,695 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 249 transitions. [2024-10-15 14:19:31,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 1.7157894736842105) internal successors, (163), 95 states have internal predecessors, (163), 61 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-10-15 14:19:31,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:31,696 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 249 transitions. [2024-10-15 14:19:31,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-10-15 14:19:31,697 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:19:31,697 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:19:31,715 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2024-10-15 14:19:31,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-10-15 14:19:31,898 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:19:31,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:31,899 INFO L85 PathProgramCache]: Analyzing trace with hash -550845448, now seen corresponding path program 58 times [2024-10-15 14:19:31,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:19:31,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230873419] [2024-10-15 14:19:31,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:19:31,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:19:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:32,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:19:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:32,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-15 14:19:32,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:32,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-15 14:19:32,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:32,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-15 14:19:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:32,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-15 14:19:32,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:32,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-15 14:19:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:32,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-15 14:19:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:32,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-15 14:19:32,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:32,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-15 14:19:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:32,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-10-15 14:19:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:32,803 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-15 14:19:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:32,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-15 14:19:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:32,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-15 14:19:32,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:32,806 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-10-15 14:19:32,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:32,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-10-15 14:19:32,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:32,808 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-10-15 14:19:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:32,809 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-10-15 14:19:32,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:32,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-15 14:19:32,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:32,812 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-15 14:19:32,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:32,813 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-10-15 14:19:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:32,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-10-15 14:19:32,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:32,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-10-15 14:19:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:32,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-10-15 14:19:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:32,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-10-15 14:19:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:32,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-10-15 14:19:32,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:32,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-10-15 14:19:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:32,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-10-15 14:19:32,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:32,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-10-15 14:19:32,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:32,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-10-15 14:19:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:32,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-10-15 14:19:32,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:32,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 493 proven. 1306 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-10-15 14:19:32,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:19:32,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230873419] [2024-10-15 14:19:32,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230873419] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:19:32,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313634187] [2024-10-15 14:19:32,828 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 14:19:32,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:32,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:19:32,830 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) [2024-10-15 14:19:32,832 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-10-15 14:19:32,931 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 14:19:32,931 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:19:32,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-10-15 14:19:32,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:19:33,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 523 proven. 1276 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-10-15 14:19:33,069 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:19:33,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 523 proven. 1276 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-10-15 14:19:33,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313634187] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:19:33,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:19:33,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 38 [2024-10-15 14:19:33,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405535389] [2024-10-15 14:19:33,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:19:33,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-10-15 14:19:33,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:19:33,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-10-15 14:19:33,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=541, Invalid=865, Unknown=0, NotChecked=0, Total=1406 [2024-10-15 14:19:33,871 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) [2024-10-15 14:19:34,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:19:34,040 INFO L93 Difference]: Finished difference Result 261 states and 263 transitions. [2024-10-15 14:19:34,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-10-15 14:19:34,041 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 [2024-10-15 14:19:34,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:19:34,042 INFO L225 Difference]: With dead ends: 261 [2024-10-15 14:19:34,042 INFO L226 Difference]: Without dead ends: 259 [2024-10-15 14:19:34,042 INFO L431 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 [2024-10-15 14:19:34,043 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:19:34,043 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 112 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:19:34,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-10-15 14:19:34,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 255. [2024-10-15 14:19:34,064 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) [2024-10-15 14:19:34,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 256 transitions. [2024-10-15 14:19:34,066 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 256 transitions. Word has length 245 [2024-10-15 14:19:34,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:19:34,066 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 256 transitions. [2024-10-15 14:19:34,066 INFO L472 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) [2024-10-15 14:19:34,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:34,067 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 256 transitions. [2024-10-15 14:19:34,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-10-15 14:19:34,068 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:19:34,068 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:19:34,085 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2024-10-15 14:19:34,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,60 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:34,269 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:19:34,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:34,269 INFO L85 PathProgramCache]: Analyzing trace with hash 967492139, now seen corresponding path program 59 times [2024-10-15 14:19:34,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:19:34,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411485502] [2024-10-15 14:19:34,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:19:34,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:19:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:35,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:19:35,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:35,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-15 14:19:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:35,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-15 14:19:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:35,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-15 14:19:35,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:35,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-15 14:19:35,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:35,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-15 14:19:35,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:35,711 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-15 14:19:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:35,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-15 14:19:35,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:35,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-15 14:19:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:35,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-10-15 14:19:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:35,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-15 14:19:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:35,718 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-15 14:19:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:35,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-15 14:19:35,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:35,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-10-15 14:19:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:35,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-10-15 14:19:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:35,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-10-15 14:19:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:35,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-10-15 14:19:35,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:35,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-15 14:19:35,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:35,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-15 14:19:35,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:35,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-10-15 14:19:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:35,731 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-10-15 14:19:35,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:35,733 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-10-15 14:19:35,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:35,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-10-15 14:19:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:35,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-10-15 14:19:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:35,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-10-15 14:19:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:35,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-10-15 14:19:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:35,739 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-10-15 14:19:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:35,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-10-15 14:19:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:35,741 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-10-15 14:19:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:35,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-10-15 14:19:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:35,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-10-15 14:19:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:35,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1337 proven. 553 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-10-15 14:19:35,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:19:35,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411485502] [2024-10-15 14:19:35,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411485502] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:19:35,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336596964] [2024-10-15 14:19:35,744 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 14:19:35,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:35,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:19:35,746 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) [2024-10-15 14:19:35,746 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-10-15 14:19:35,853 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2024-10-15 14:19:35,853 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:19:35,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-10-15 14:19:35,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:19:37,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-10-15 14:19:37,287 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:19:38,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-10-15 14:19:38,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336596964] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:19:38,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:19:38,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 98 [2024-10-15 14:19:38,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448587204] [2024-10-15 14:19:38,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:19:38,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-10-15 14:19:38,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:19:38,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-10-15 14:19:38,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2149, Invalid=7357, Unknown=0, NotChecked=0, Total=9506 [2024-10-15 14:19:38,466 INFO L87 Difference]: Start difference. First operand 255 states and 256 transitions. Second operand has 98 states, 98 states have (on average 1.7142857142857142) internal successors, (168), 98 states have internal predecessors, (168), 63 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-10-15 14:19:38,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:19:38,896 INFO L93 Difference]: Finished difference Result 357 states and 389 transitions. [2024-10-15 14:19:38,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-10-15 14:19:38,897 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 1.7142857142857142) internal successors, (168), 98 states have internal predecessors, (168), 63 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Word has length 252 [2024-10-15 14:19:38,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:19:38,899 INFO L225 Difference]: With dead ends: 357 [2024-10-15 14:19:38,899 INFO L226 Difference]: Without dead ends: 256 [2024-10-15 14:19:38,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 473 SyntacticMatches, 61 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6150 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2149, Invalid=7357, Unknown=0, NotChecked=0, Total=9506 [2024-10-15 14:19:38,900 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 14:19:38,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 464 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 972 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 14:19:38,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-10-15 14:19:38,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2024-10-15 14:19:38,922 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) [2024-10-15 14:19:38,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 257 transitions. [2024-10-15 14:19:38,923 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 257 transitions. Word has length 252 [2024-10-15 14:19:38,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:19:38,923 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 257 transitions. [2024-10-15 14:19:38,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 1.7142857142857142) internal successors, (168), 98 states have internal predecessors, (168), 63 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-10-15 14:19:38,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:38,924 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 257 transitions. [2024-10-15 14:19:38,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-10-15 14:19:38,925 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:19:38,925 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:19:38,942 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2024-10-15 14:19:39,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2024-10-15 14:19:39,126 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:19:39,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:39,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1895042249, now seen corresponding path program 60 times [2024-10-15 14:19:39,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:19:39,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499873527] [2024-10-15 14:19:39,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:19:39,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:19:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:19:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-15 14:19:39,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-15 14:19:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-15 14:19:39,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,929 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-15 14:19:39,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-15 14:19:39,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-15 14:19:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-15 14:19:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-15 14:19:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-15 14:19:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-15 14:19:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,935 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-10-15 14:19:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-10-15 14:19:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-15 14:19:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-15 14:19:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,938 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-10-15 14:19:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-15 14:19:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-10-15 14:19:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-15 14:19:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-10-15 14:19:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-10-15 14:19:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-10-15 14:19:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-10-15 14:19:39,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-10-15 14:19:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-10-15 14:19:39,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-10-15 14:19:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-10-15 14:19:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-10-15 14:19:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-10-15 14:19:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-10-15 14:19:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-10-15 14:19:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 525 proven. 1396 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-10-15 14:19:39,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:19:39,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499873527] [2024-10-15 14:19:39,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499873527] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:19:39,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358724444] [2024-10-15 14:19:39,952 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 14:19:39,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:39,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:19:39,953 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) [2024-10-15 14:19:39,954 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-10-15 14:19:40,093 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2024-10-15 14:19:40,093 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:19:40,097 INFO L255 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-10-15 14:19:40,100 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:19:40,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 556 proven. 1365 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-10-15 14:19:40,288 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:19:41,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 556 proven. 1365 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-10-15 14:19:41,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358724444] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:19:41,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:19:41,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 39 [2024-10-15 14:19:41,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662325997] [2024-10-15 14:19:41,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:19:41,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-10-15 14:19:41,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:19:41,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-10-15 14:19:41,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=574, Invalid=908, Unknown=0, NotChecked=0, Total=1482 [2024-10-15 14:19:41,116 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) [2024-10-15 14:19:41,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:19:41,289 INFO L93 Difference]: Finished difference Result 269 states and 271 transitions. [2024-10-15 14:19:41,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-15 14:19:41,290 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 [2024-10-15 14:19:41,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:19:41,291 INFO L225 Difference]: With dead ends: 269 [2024-10-15 14:19:41,291 INFO L226 Difference]: Without dead ends: 267 [2024-10-15 14:19:41,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 534 SyntacticMatches, 62 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1327 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=580, Invalid=980, Unknown=0, NotChecked=0, Total=1560 [2024-10-15 14:19:41,292 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:19:41,292 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 113 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:19:41,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-10-15 14:19:41,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 263. [2024-10-15 14:19:41,314 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) [2024-10-15 14:19:41,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 264 transitions. [2024-10-15 14:19:41,315 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 264 transitions. Word has length 253 [2024-10-15 14:19:41,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:19:41,315 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 264 transitions. [2024-10-15 14:19:41,316 INFO L472 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) [2024-10-15 14:19:41,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:41,316 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 264 transitions. [2024-10-15 14:19:41,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-10-15 14:19:41,317 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:19:41,317 INFO L215 NwaCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:19:41,335 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2024-10-15 14:19:41,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,62 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:41,522 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:19:41,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:41,522 INFO L85 PathProgramCache]: Analyzing trace with hash 38845964, now seen corresponding path program 61 times [2024-10-15 14:19:41,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:19:41,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650201121] [2024-10-15 14:19:41,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:19:41,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:19:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:43,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:19:43,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:43,138 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-15 14:19:43,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:43,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-15 14:19:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:43,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-15 14:19:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:43,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-15 14:19:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:43,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-15 14:19:43,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:43,142 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-15 14:19:43,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:43,143 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-15 14:19:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:43,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-15 14:19:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:43,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-15 14:19:43,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:43,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-15 14:19:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:43,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-10-15 14:19:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:43,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-10-15 14:19:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:43,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-15 14:19:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:43,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-15 14:19:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:43,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-10-15 14:19:43,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:43,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-15 14:19:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:43,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-10-15 14:19:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:43,152 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-15 14:19:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:43,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-10-15 14:19:43,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:43,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-10-15 14:19:43,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:43,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-10-15 14:19:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:43,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-10-15 14:19:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:43,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-10-15 14:19:43,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:43,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-10-15 14:19:43,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:43,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-10-15 14:19:43,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:43,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-10-15 14:19:43,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:43,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-10-15 14:19:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:43,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-10-15 14:19:43,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:43,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-10-15 14:19:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:43,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-10-15 14:19:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:43,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-10-15 14:19:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:43,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1428 proven. 587 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-10-15 14:19:43,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:19:43,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650201121] [2024-10-15 14:19:43,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650201121] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:19:43,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663879790] [2024-10-15 14:19:43,165 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 14:19:43,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:43,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:19:43,166 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) [2024-10-15 14:19:43,167 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-10-15 14:19:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:43,260 INFO L255 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-10-15 14:19:43,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:19:44,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-10-15 14:19:44,854 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:19:46,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-10-15 14:19:46,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663879790] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:19:46,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:19:46,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67, 67] total 101 [2024-10-15 14:19:46,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282324416] [2024-10-15 14:19:46,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:19:46,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2024-10-15 14:19:46,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:19:46,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2024-10-15 14:19:46,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2282, Invalid=7818, Unknown=0, NotChecked=0, Total=10100 [2024-10-15 14:19:46,105 INFO L87 Difference]: Start difference. First operand 263 states and 264 transitions. Second operand has 101 states, 101 states have (on average 1.7128712871287128) internal successors, (173), 101 states have internal predecessors, (173), 65 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2024-10-15 14:19:46,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:19:46,568 INFO L93 Difference]: Finished difference Result 368 states and 401 transitions. [2024-10-15 14:19:46,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-10-15 14:19:46,568 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.7128712871287128) internal successors, (173), 101 states have internal predecessors, (173), 65 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) Word has length 260 [2024-10-15 14:19:46,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:19:46,570 INFO L225 Difference]: With dead ends: 368 [2024-10-15 14:19:46,570 INFO L226 Difference]: Without dead ends: 264 [2024-10-15 14:19:46,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 488 SyntacticMatches, 63 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6541 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2282, Invalid=7818, Unknown=0, NotChecked=0, Total=10100 [2024-10-15 14:19:46,571 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 0 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-15 14:19:46,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 672 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1053 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-15 14:19:46,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-10-15 14:19:46,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2024-10-15 14:19:46,604 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) [2024-10-15 14:19:46,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 265 transitions. [2024-10-15 14:19:46,605 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 265 transitions. Word has length 260 [2024-10-15 14:19:46,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:19:46,605 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 265 transitions. [2024-10-15 14:19:46,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.7128712871287128) internal successors, (173), 101 states have internal predecessors, (173), 65 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2024-10-15 14:19:46,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:46,605 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 265 transitions. [2024-10-15 14:19:46,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-10-15 14:19:46,607 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:19:46,607 INFO L215 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:19:46,621 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2024-10-15 14:19:46,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,63 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:46,807 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:19:46,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:46,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1931879192, now seen corresponding path program 62 times [2024-10-15 14:19:46,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:19:46,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240577293] [2024-10-15 14:19:46,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:19:46,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:19:46,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:19:47,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-15 14:19:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-15 14:19:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-15 14:19:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-15 14:19:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-15 14:19:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,654 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-15 14:19:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-10-15 14:19:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-15 14:19:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-15 14:19:47,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-10-15 14:19:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,659 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-10-15 14:19:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-15 14:19:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-15 14:19:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,664 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-15 14:19:47,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-10-15 14:19:47,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-10-15 14:19:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,667 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-10-15 14:19:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-10-15 14:19:47,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-10-15 14:19:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-10-15 14:19:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-10-15 14:19:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-10-15 14:19:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-10-15 14:19:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-10-15 14:19:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-10-15 14:19:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-10-15 14:19:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,679 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-10-15 14:19:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-10-15 14:19:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-10-15 14:19:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-10-15 14:19:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-10-15 14:19:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 558 proven. 1489 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-10-15 14:19:47,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:19:47,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240577293] [2024-10-15 14:19:47,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240577293] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:19:47,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36396550] [2024-10-15 14:19:47,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:19:47,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:47,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:19:47,691 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) [2024-10-15 14:19:47,692 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-10-15 14:19:47,804 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:19:47,805 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:19:47,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-10-15 14:19:47,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:19:47,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 590 proven. 1457 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-10-15 14:19:47,992 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:19:48,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 590 proven. 1457 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-10-15 14:19:48,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36396550] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:19:48,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:19:48,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 40 [2024-10-15 14:19:48,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944523297] [2024-10-15 14:19:48,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:19:48,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-10-15 14:19:48,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:19:48,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-10-15 14:19:48,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=608, Invalid=952, Unknown=0, NotChecked=0, Total=1560 [2024-10-15 14:19:48,899 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) [2024-10-15 14:19:49,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:19:49,067 INFO L93 Difference]: Finished difference Result 277 states and 279 transitions. [2024-10-15 14:19:49,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-10-15 14:19:49,067 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 [2024-10-15 14:19:49,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:19:49,069 INFO L225 Difference]: With dead ends: 277 [2024-10-15 14:19:49,069 INFO L226 Difference]: Without dead ends: 275 [2024-10-15 14:19:49,069 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 549 SyntacticMatches, 66 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1468 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=614, Invalid=1026, Unknown=0, NotChecked=0, Total=1640 [2024-10-15 14:19:49,069 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:19:49,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 97 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:19:49,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-10-15 14:19:49,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 271. [2024-10-15 14:19:49,088 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) [2024-10-15 14:19:49,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 272 transitions. [2024-10-15 14:19:49,090 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 272 transitions. Word has length 261 [2024-10-15 14:19:49,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:19:49,090 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 272 transitions. [2024-10-15 14:19:49,090 INFO L472 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) [2024-10-15 14:19:49,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:49,090 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 272 transitions. [2024-10-15 14:19:49,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-10-15 14:19:49,091 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:19:49,091 INFO L215 NwaCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:19:49,103 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2024-10-15 14:19:49,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2024-10-15 14:19:49,292 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:19:49,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:49,292 INFO L85 PathProgramCache]: Analyzing trace with hash -786686197, now seen corresponding path program 63 times [2024-10-15 14:19:49,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:19:49,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085857674] [2024-10-15 14:19:49,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:19:49,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:19:49,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:50,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:19:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:50,908 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-15 14:19:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:50,909 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-15 14:19:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:50,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-15 14:19:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:50,911 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-15 14:19:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:50,912 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-15 14:19:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:50,912 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-15 14:19:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:50,915 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-10-15 14:19:50,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:50,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-15 14:19:50,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:50,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-15 14:19:50,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:50,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-10-15 14:19:50,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:50,919 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-10-15 14:19:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:50,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-15 14:19:50,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:50,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-15 14:19:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:50,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-15 14:19:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:50,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-10-15 14:19:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:50,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-10-15 14:19:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:50,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-10-15 14:19:50,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:50,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-10-15 14:19:50,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:50,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-10-15 14:19:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:50,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-10-15 14:19:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:50,929 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-10-15 14:19:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:50,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-10-15 14:19:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:50,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-10-15 14:19:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:50,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-10-15 14:19:50,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:50,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-10-15 14:19:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:50,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-10-15 14:19:50,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:50,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-10-15 14:19:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:50,935 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-10-15 14:19:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:50,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-10-15 14:19:50,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:50,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-10-15 14:19:50,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:50,938 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-10-15 14:19:50,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:50,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-10-15 14:19:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:50,940 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1522 proven. 622 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-10-15 14:19:50,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:19:50,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085857674] [2024-10-15 14:19:50,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085857674] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:19:50,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985744519] [2024-10-15 14:19:50,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 14:19:50,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:50,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:19:50,941 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) [2024-10-15 14:19:50,942 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-10-15 14:19:51,069 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2024-10-15 14:19:51,069 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:19:51,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-10-15 14:19:51,074 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:19:52,682 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-10-15 14:19:52,682 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:19:53,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-10-15 14:19:53,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985744519] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:19:53,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:19:54,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69, 69] total 104 [2024-10-15 14:19:54,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570302485] [2024-10-15 14:19:54,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:19:54,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2024-10-15 14:19:54,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:19:54,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2024-10-15 14:19:54,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2419, Invalid=8293, Unknown=0, NotChecked=0, Total=10712 [2024-10-15 14:19:54,002 INFO L87 Difference]: Start difference. First operand 271 states and 272 transitions. Second operand has 104 states, 104 states have (on average 1.7115384615384615) internal successors, (178), 104 states have internal predecessors, (178), 67 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-10-15 14:19:54,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:19:54,439 INFO L93 Difference]: Finished difference Result 379 states and 413 transitions. [2024-10-15 14:19:54,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-10-15 14:19:54,440 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 1.7115384615384615) internal successors, (178), 104 states have internal predecessors, (178), 67 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) Word has length 268 [2024-10-15 14:19:54,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:19:54,442 INFO L225 Difference]: With dead ends: 379 [2024-10-15 14:19:54,442 INFO L226 Difference]: Without dead ends: 272 [2024-10-15 14:19:54,442 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 503 SyntacticMatches, 65 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6944 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2419, Invalid=8293, Unknown=0, NotChecked=0, Total=10712 [2024-10-15 14:19:54,443 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 0 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 14:19:54,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 610 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 972 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 14:19:54,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-10-15 14:19:54,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2024-10-15 14:19:54,465 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) [2024-10-15 14:19:54,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 273 transitions. [2024-10-15 14:19:54,466 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 273 transitions. Word has length 268 [2024-10-15 14:19:54,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:19:54,466 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 273 transitions. [2024-10-15 14:19:54,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 1.7115384615384615) internal successors, (178), 104 states have internal predecessors, (178), 67 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-10-15 14:19:54,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:54,467 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 273 transitions. [2024-10-15 14:19:54,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-10-15 14:19:54,468 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:19:54,468 INFO L215 NwaCegarLoop]: trace histogram [33, 33, 33, 33, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:19:54,486 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2024-10-15 14:19:54,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,65 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:54,669 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:19:54,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:54,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1879984105, now seen corresponding path program 64 times [2024-10-15 14:19:54,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:19:54,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861477238] [2024-10-15 14:19:54,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:19:54,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:19:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:55,563 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:19:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:55,564 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-15 14:19:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:55,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-15 14:19:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:55,566 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-15 14:19:55,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:55,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-15 14:19:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:55,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-15 14:19:55,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:55,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-15 14:19:55,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:55,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-15 14:19:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:55,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-15 14:19:55,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:55,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-10-15 14:19:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:55,571 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-15 14:19:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:55,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-15 14:19:55,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:55,573 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-10-15 14:19:55,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:55,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-15 14:19:55,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:55,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-10-15 14:19:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:55,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-10-15 14:19:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:55,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-10-15 14:19:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:55,577 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-15 14:19:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:55,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-10-15 14:19:55,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:55,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-10-15 14:19:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:55,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-10-15 14:19:55,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:55,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-10-15 14:19:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:55,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-10-15 14:19:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:55,582 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-10-15 14:19:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:55,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-10-15 14:19:55,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:55,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-10-15 14:19:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:55,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-10-15 14:19:55,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:55,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-10-15 14:19:55,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:55,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-10-15 14:19:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:55,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-10-15 14:19:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:55,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-10-15 14:19:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:55,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-10-15 14:19:55,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:55,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-10-15 14:19:55,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:55,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 592 proven. 1585 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-10-15 14:19:55,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:19:55,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861477238] [2024-10-15 14:19:55,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861477238] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:19:55,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108425536] [2024-10-15 14:19:55,591 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 14:19:55,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:55,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:19:55,593 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) [2024-10-15 14:19:55,596 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-10-15 14:19:55,718 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 14:19:55,718 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:19:55,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-10-15 14:19:55,726 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:19:55,912 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 625 proven. 1552 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-10-15 14:19:55,912 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:19:56,835 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 625 proven. 1552 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-10-15 14:19:56,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108425536] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:19:56,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:19:56,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 41 [2024-10-15 14:19:56,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553416988] [2024-10-15 14:19:56,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:19:56,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-10-15 14:19:56,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:19:56,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-10-15 14:19:56,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=643, Invalid=997, Unknown=0, NotChecked=0, Total=1640 [2024-10-15 14:19:56,836 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) [2024-10-15 14:19:57,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:19:57,015 INFO L93 Difference]: Finished difference Result 285 states and 287 transitions. [2024-10-15 14:19:57,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-10-15 14:19:57,015 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 [2024-10-15 14:19:57,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:19:57,017 INFO L225 Difference]: With dead ends: 285 [2024-10-15 14:19:57,017 INFO L226 Difference]: Without dead ends: 283 [2024-10-15 14:19:57,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 568 SyntacticMatches, 66 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=649, Invalid=1073, Unknown=0, NotChecked=0, Total=1722 [2024-10-15 14:19:57,017 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:19:57,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 108 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:19:57,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-10-15 14:19:57,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 279. [2024-10-15 14:19:57,042 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) [2024-10-15 14:19:57,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 280 transitions. [2024-10-15 14:19:57,043 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 280 transitions. Word has length 269 [2024-10-15 14:19:57,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:19:57,044 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 280 transitions. [2024-10-15 14:19:57,044 INFO L472 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) [2024-10-15 14:19:57,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:57,044 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 280 transitions. [2024-10-15 14:19:57,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-10-15 14:19:57,045 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:19:57,046 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:19:57,063 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2024-10-15 14:19:57,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,66 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:57,250 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:19:57,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:57,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1898822956, now seen corresponding path program 65 times [2024-10-15 14:19:57,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:19:57,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95718615] [2024-10-15 14:19:57,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:19:57,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:19:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:58,967 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:19:58,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:58,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-15 14:19:58,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:58,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-15 14:19:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:58,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-15 14:19:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:58,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-15 14:19:58,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:58,972 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-15 14:19:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:58,972 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-15 14:19:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:58,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-15 14:19:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:58,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-15 14:19:58,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:58,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-10-15 14:19:58,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:58,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-15 14:19:58,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:58,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-15 14:19:58,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:58,977 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-10-15 14:19:58,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:58,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-15 14:19:58,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:58,979 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-10-15 14:19:58,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:58,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-10-15 14:19:58,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:58,982 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-10-15 14:19:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:58,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-15 14:19:58,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:58,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-10-15 14:19:58,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:58,985 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-10-15 14:19:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:58,986 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-10-15 14:19:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:58,988 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-10-15 14:19:58,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:58,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-10-15 14:19:58,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:58,990 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-10-15 14:19:58,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:58,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-10-15 14:19:58,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:58,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-10-15 14:19:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:58,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-10-15 14:19:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:58,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-10-15 14:19:58,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:58,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-10-15 14:19:58,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:58,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-10-15 14:19:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:58,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-10-15 14:19:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:59,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-10-15 14:19:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:59,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-10-15 14:19:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:59,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-10-15 14:19:59,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:59,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1619 proven. 658 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-10-15 14:19:59,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:19:59,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95718615] [2024-10-15 14:19:59,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95718615] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:19:59,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590687207] [2024-10-15 14:19:59,005 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 14:19:59,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:59,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:19:59,006 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) [2024-10-15 14:19:59,007 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-10-15 14:19:59,123 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2024-10-15 14:19:59,123 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:19:59,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-10-15 14:19:59,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:20:00,815 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-10-15 14:20:00,816 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:20:02,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-10-15 14:20:02,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590687207] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:20:02,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:20:02,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71, 71] total 107 [2024-10-15 14:20:02,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670160315] [2024-10-15 14:20:02,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:20:02,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2024-10-15 14:20:02,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:20:02,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2024-10-15 14:20:02,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2560, Invalid=8782, Unknown=0, NotChecked=0, Total=11342 [2024-10-15 14:20:02,196 INFO L87 Difference]: Start difference. First operand 279 states and 280 transitions. Second operand has 107 states, 107 states have (on average 1.7102803738317758) internal successors, (183), 107 states have internal predecessors, (183), 69 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-10-15 14:20:02,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:20:02,641 INFO L93 Difference]: Finished difference Result 390 states and 425 transitions. [2024-10-15 14:20:02,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-10-15 14:20:02,641 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 1.7102803738317758) internal successors, (183), 107 states have internal predecessors, (183), 69 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) Word has length 276 [2024-10-15 14:20:02,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:20:02,643 INFO L225 Difference]: With dead ends: 390 [2024-10-15 14:20:02,643 INFO L226 Difference]: Without dead ends: 280 [2024-10-15 14:20:02,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 690 GetRequests, 518 SyntacticMatches, 67 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7359 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2560, Invalid=8782, Unknown=0, NotChecked=0, Total=11342 [2024-10-15 14:20:02,644 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 0 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 14:20:02,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 701 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 14:20:02,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-10-15 14:20:02,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2024-10-15 14:20:02,670 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) [2024-10-15 14:20:02,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 281 transitions. [2024-10-15 14:20:02,672 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 281 transitions. Word has length 276 [2024-10-15 14:20:02,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:20:02,672 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 281 transitions. [2024-10-15 14:20:02,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 1.7102803738317758) internal successors, (183), 107 states have internal predecessors, (183), 69 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-10-15 14:20:02,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:02,672 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 281 transitions. [2024-10-15 14:20:02,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-10-15 14:20:02,674 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:20:02,674 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:20:02,691 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2024-10-15 14:20:02,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2024-10-15 14:20:02,875 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:20:02,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:02,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1687128632, now seen corresponding path program 66 times [2024-10-15 14:20:02,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:20:02,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171800050] [2024-10-15 14:20:02,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:20:02,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:20:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:03,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:20:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:03,844 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-15 14:20:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:03,845 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-15 14:20:03,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:03,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-15 14:20:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:03,847 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-15 14:20:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:03,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-15 14:20:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:03,849 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-15 14:20:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:03,849 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-15 14:20:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:03,850 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-15 14:20:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:03,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-15 14:20:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:03,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-15 14:20:03,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:03,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-15 14:20:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:03,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-10-15 14:20:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:03,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-10-15 14:20:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:03,855 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-10-15 14:20:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:03,856 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-10-15 14:20:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:03,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-10-15 14:20:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:03,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-10-15 14:20:03,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:03,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-10-15 14:20:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:03,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-10-15 14:20:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:03,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-10-15 14:20:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:03,862 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-10-15 14:20:03,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:03,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-10-15 14:20:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:03,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-10-15 14:20:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:03,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-10-15 14:20:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:03,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-10-15 14:20:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:03,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-10-15 14:20:03,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:03,870 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-10-15 14:20:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:03,871 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-10-15 14:20:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:03,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-10-15 14:20:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:03,874 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-10-15 14:20:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:03,875 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-10-15 14:20:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:03,876 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-10-15 14:20:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:03,877 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-10-15 14:20:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:03,879 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 627 proven. 1684 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-10-15 14:20:03,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:20:03,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171800050] [2024-10-15 14:20:03,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171800050] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:20:03,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031829826] [2024-10-15 14:20:03,879 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 14:20:03,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:03,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:20:03,882 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) [2024-10-15 14:20:03,884 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2024-10-15 14:20:04,048 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2024-10-15 14:20:04,049 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:20:04,053 INFO L255 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-10-15 14:20:04,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:20:04,253 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 661 proven. 1650 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-10-15 14:20:04,253 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:20:05,220 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 661 proven. 1650 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-10-15 14:20:05,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031829826] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:20:05,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:20:05,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 42 [2024-10-15 14:20:05,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269696391] [2024-10-15 14:20:05,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:20:05,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-10-15 14:20:05,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:20:05,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-10-15 14:20:05,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=679, Invalid=1043, Unknown=0, NotChecked=0, Total=1722 [2024-10-15 14:20:05,222 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) [2024-10-15 14:20:05,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:20:05,402 INFO L93 Difference]: Finished difference Result 293 states and 295 transitions. [2024-10-15 14:20:05,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-10-15 14:20:05,402 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 [2024-10-15 14:20:05,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:20:05,404 INFO L225 Difference]: With dead ends: 293 [2024-10-15 14:20:05,404 INFO L226 Difference]: Without dead ends: 291 [2024-10-15 14:20:05,404 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 585 SyntacticMatches, 68 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1558 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=685, Invalid=1121, Unknown=0, NotChecked=0, Total=1806 [2024-10-15 14:20:05,404 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:20:05,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 99 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:20:05,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-10-15 14:20:05,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 287. [2024-10-15 14:20:05,441 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) [2024-10-15 14:20:05,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 288 transitions. [2024-10-15 14:20:05,443 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 288 transitions. Word has length 277 [2024-10-15 14:20:05,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:20:05,443 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 288 transitions. [2024-10-15 14:20:05,443 INFO L472 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) [2024-10-15 14:20:05,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:05,444 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 288 transitions. [2024-10-15 14:20:05,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-10-15 14:20:05,445 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:20:05,445 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:20:05,458 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2024-10-15 14:20:05,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2024-10-15 14:20:05,647 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:20:05,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:05,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1127844885, now seen corresponding path program 67 times [2024-10-15 14:20:05,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:20:05,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559558843] [2024-10-15 14:20:05,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:20:05,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:20:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:20:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-15 14:20:07,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-15 14:20:07,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-15 14:20:07,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-15 14:20:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-15 14:20:07,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-15 14:20:07,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-15 14:20:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-15 14:20:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-15 14:20:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-15 14:20:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-15 14:20:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,491 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-10-15 14:20:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,492 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-10-15 14:20:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-10-15 14:20:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-10-15 14:20:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-10-15 14:20:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,495 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-10-15 14:20:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,496 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-10-15 14:20:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-10-15 14:20:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-10-15 14:20:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,498 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-10-15 14:20:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-10-15 14:20:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-10-15 14:20:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-10-15 14:20:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-10-15 14:20:07,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-10-15 14:20:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-10-15 14:20:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,504 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-10-15 14:20:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-10-15 14:20:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,506 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-10-15 14:20:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-10-15 14:20:07,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-10-15 14:20:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-10-15 14:20:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-10-15 14:20:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,511 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1719 proven. 695 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-10-15 14:20:07,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:20:07,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559558843] [2024-10-15 14:20:07,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559558843] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:20:07,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967351] [2024-10-15 14:20:07,511 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 14:20:07,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:07,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:20:07,512 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) [2024-10-15 14:20:07,513 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2024-10-15 14:20:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:07,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-10-15 14:20:07,615 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:20:09,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-10-15 14:20:09,398 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:20:10,851 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-10-15 14:20:10,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967351] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:20:10,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:20:10,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73, 73] total 110 [2024-10-15 14:20:10,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114984239] [2024-10-15 14:20:10,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:20:10,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2024-10-15 14:20:10,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:20:10,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2024-10-15 14:20:10,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2705, Invalid=9285, Unknown=0, NotChecked=0, Total=11990 [2024-10-15 14:20:10,853 INFO L87 Difference]: Start difference. First operand 287 states and 288 transitions. Second operand has 110 states, 110 states have (on average 1.709090909090909) internal successors, (188), 110 states have internal predecessors, (188), 71 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2024-10-15 14:20:11,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:20:11,371 INFO L93 Difference]: Finished difference Result 401 states and 437 transitions. [2024-10-15 14:20:11,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-10-15 14:20:11,371 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 1.709090909090909) internal successors, (188), 110 states have internal predecessors, (188), 71 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) Word has length 284 [2024-10-15 14:20:11,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:20:11,373 INFO L225 Difference]: With dead ends: 401 [2024-10-15 14:20:11,373 INFO L226 Difference]: Without dead ends: 288 [2024-10-15 14:20:11,374 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 710 GetRequests, 533 SyntacticMatches, 69 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7786 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2705, Invalid=9285, Unknown=0, NotChecked=0, Total=11990 [2024-10-15 14:20:11,374 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-15 14:20:11,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 804 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-15 14:20:11,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-10-15 14:20:11,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2024-10-15 14:20:11,391 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) [2024-10-15 14:20:11,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 289 transitions. [2024-10-15 14:20:11,392 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 289 transitions. Word has length 284 [2024-10-15 14:20:11,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:20:11,393 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 289 transitions. [2024-10-15 14:20:11,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 1.709090909090909) internal successors, (188), 110 states have internal predecessors, (188), 71 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2024-10-15 14:20:11,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:11,393 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 289 transitions. [2024-10-15 14:20:11,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2024-10-15 14:20:11,394 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:20:11,394 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:20:11,406 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2024-10-15 14:20:11,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-10-15 14:20:11,594 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:20:11,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:11,595 INFO L85 PathProgramCache]: Analyzing trace with hash 2134930679, now seen corresponding path program 68 times [2024-10-15 14:20:11,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:20:11,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038294657] [2024-10-15 14:20:11,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:20:11,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:20:11,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:12,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:20:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:12,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-15 14:20:12,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:12,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-15 14:20:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:12,606 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-15 14:20:12,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:12,606 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 14:20:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:12,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-15 14:20:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:12,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-15 14:20:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:12,609 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-15 14:20:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:12,609 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-15 14:20:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:12,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-10-15 14:20:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:12,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-15 14:20:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:12,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-10-15 14:20:12,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:12,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-15 14:20:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:12,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-10-15 14:20:12,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:12,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-10-15 14:20:12,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:12,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-10-15 14:20:12,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:12,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-15 14:20:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:12,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-10-15 14:20:12,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:12,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-10-15 14:20:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:12,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-10-15 14:20:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:12,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-10-15 14:20:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:12,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-10-15 14:20:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:12,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-10-15 14:20:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:12,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-10-15 14:20:12,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:12,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-10-15 14:20:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:12,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-10-15 14:20:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:12,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-10-15 14:20:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:12,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-10-15 14:20:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:12,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-10-15 14:20:12,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:12,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-10-15 14:20:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:12,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-10-15 14:20:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:12,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-10-15 14:20:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:12,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-10-15 14:20:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:12,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-10-15 14:20:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:12,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-10-15 14:20:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:12,633 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 663 proven. 1786 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-10-15 14:20:12,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:20:12,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038294657] [2024-10-15 14:20:12,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038294657] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:20:12,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601919855] [2024-10-15 14:20:12,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:20:12,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:12,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:20:12,634 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) [2024-10-15 14:20:12,635 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2024-10-15 14:20:12,733 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:20:12,733 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:20:12,736 INFO L255 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-10-15 14:20:12,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:20:12,928 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 698 proven. 1751 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-10-15 14:20:12,928 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:20:13,975 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 698 proven. 1751 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-10-15 14:20:13,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601919855] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:20:13,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:20:13,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 43 [2024-10-15 14:20:13,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794660143] [2024-10-15 14:20:13,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:20:13,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-10-15 14:20:13,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:20:13,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-10-15 14:20:13,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=716, Invalid=1090, Unknown=0, NotChecked=0, Total=1806 [2024-10-15 14:20:13,977 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) [2024-10-15 14:20:14,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:20:14,165 INFO L93 Difference]: Finished difference Result 301 states and 303 transitions. [2024-10-15 14:20:14,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-10-15 14:20:14,166 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 [2024-10-15 14:20:14,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:20:14,167 INFO L225 Difference]: With dead ends: 301 [2024-10-15 14:20:14,167 INFO L226 Difference]: Without dead ends: 299 [2024-10-15 14:20:14,167 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 600 SyntacticMatches, 72 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1711 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=722, Invalid=1170, Unknown=0, NotChecked=0, Total=1892 [2024-10-15 14:20:14,168 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:20:14,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 107 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:20:14,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-10-15 14:20:14,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 295. [2024-10-15 14:20:14,194 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) [2024-10-15 14:20:14,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 296 transitions. [2024-10-15 14:20:14,196 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 296 transitions. Word has length 285 [2024-10-15 14:20:14,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:20:14,196 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 296 transitions. [2024-10-15 14:20:14,196 INFO L472 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) [2024-10-15 14:20:14,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:14,197 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 296 transitions. [2024-10-15 14:20:14,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2024-10-15 14:20:14,198 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:20:14,198 INFO L215 NwaCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:20:14,216 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2024-10-15 14:20:14,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,70 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:14,399 INFO L396 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:20:14,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:14,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1877294004, now seen corresponding path program 69 times [2024-10-15 14:20:14,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:20:14,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937808570] [2024-10-15 14:20:14,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:20:14,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:20:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:20:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,320 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-15 14:20:16,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-15 14:20:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-15 14:20:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,323 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 14:20:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,323 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-15 14:20:16,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-15 14:20:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-15 14:20:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-15 14:20:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-10-15 14:20:16,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-15 14:20:16,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-10-15 14:20:16,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-15 14:20:16,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-10-15 14:20:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,331 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-10-15 14:20:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-10-15 14:20:16,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-15 14:20:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-10-15 14:20:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-10-15 14:20:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-10-15 14:20:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-10-15 14:20:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-10-15 14:20:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-10-15 14:20:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-10-15 14:20:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-10-15 14:20:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-10-15 14:20:16,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-10-15 14:20:16,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-10-15 14:20:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-10-15 14:20:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-10-15 14:20:16,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,345 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-10-15 14:20:16,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-10-15 14:20:16,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-10-15 14:20:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-10-15 14:20:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-10-15 14:20:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-10-15 14:20:16,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1822 proven. 733 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-10-15 14:20:16,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:20:16,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937808570] [2024-10-15 14:20:16,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937808570] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:20:16,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068907248] [2024-10-15 14:20:16,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 14:20:16,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:16,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:20:16,354 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) [2024-10-15 14:20:16,355 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2024-10-15 14:20:16,482 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2024-10-15 14:20:16,482 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:20:16,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-10-15 14:20:16,487 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:20:18,369 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-10-15 14:20:18,369 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:20:19,957 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-10-15 14:20:19,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068907248] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:20:19,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:20:19,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75, 75] total 113 [2024-10-15 14:20:19,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92216756] [2024-10-15 14:20:19,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:20:19,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2024-10-15 14:20:19,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:20:19,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2024-10-15 14:20:19,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2854, Invalid=9802, Unknown=0, NotChecked=0, Total=12656 [2024-10-15 14:20:19,960 INFO L87 Difference]: Start difference. First operand 295 states and 296 transitions. Second operand has 113 states, 113 states have (on average 1.7079646017699115) internal successors, (193), 113 states have internal predecessors, (193), 73 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-10-15 14:20:20,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:20:20,459 INFO L93 Difference]: Finished difference Result 412 states and 449 transitions. [2024-10-15 14:20:20,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-10-15 14:20:20,459 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 1.7079646017699115) internal successors, (193), 113 states have internal predecessors, (193), 73 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Word has length 292 [2024-10-15 14:20:20,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:20:20,462 INFO L225 Difference]: With dead ends: 412 [2024-10-15 14:20:20,462 INFO L226 Difference]: Without dead ends: 296 [2024-10-15 14:20:20,463 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 548 SyntacticMatches, 71 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8225 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=2854, Invalid=9802, Unknown=0, NotChecked=0, Total=12656 [2024-10-15 14:20:20,463 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 0 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-15 14:20:20,463 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 652 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-15 14:20:20,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-10-15 14:20:20,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2024-10-15 14:20:20,490 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) [2024-10-15 14:20:20,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 297 transitions. [2024-10-15 14:20:20,492 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 297 transitions. Word has length 292 [2024-10-15 14:20:20,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:20:20,492 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 297 transitions. [2024-10-15 14:20:20,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 1.7079646017699115) internal successors, (193), 113 states have internal predecessors, (193), 73 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-10-15 14:20:20,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:20,493 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 297 transitions. [2024-10-15 14:20:20,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2024-10-15 14:20:20,494 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:20:20,494 INFO L215 NwaCegarLoop]: trace histogram [36, 36, 36, 36, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:20:20,511 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2024-10-15 14:20:20,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,71 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:20,695 INFO L396 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:20:20,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:20,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1882782040, now seen corresponding path program 70 times [2024-10-15 14:20:20,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:20:20,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977000813] [2024-10-15 14:20:20,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:20:20,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:20:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:20:21,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-15 14:20:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,781 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-15 14:20:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-15 14:20:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-15 14:20:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-15 14:20:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-15 14:20:21,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-15 14:20:21,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-15 14:20:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-15 14:20:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-15 14:20:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-15 14:20:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-10-15 14:20:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-10-15 14:20:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-10-15 14:20:21,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-10-15 14:20:21,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-10-15 14:20:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-10-15 14:20:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-10-15 14:20:21,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-10-15 14:20:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-10-15 14:20:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-10-15 14:20:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-10-15 14:20:21,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-10-15 14:20:21,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-10-15 14:20:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-10-15 14:20:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-10-15 14:20:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,803 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-10-15 14:20:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-10-15 14:20:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-10-15 14:20:21,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-10-15 14:20:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,806 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-10-15 14:20:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-10-15 14:20:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,808 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-10-15 14:20:21,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,809 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-10-15 14:20:21,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,809 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-10-15 14:20:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:21,811 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 700 proven. 1891 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-10-15 14:20:21,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:20:21,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977000813] [2024-10-15 14:20:21,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977000813] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:20:21,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923606518] [2024-10-15 14:20:21,811 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 14:20:21,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:21,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:20:21,812 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) [2024-10-15 14:20:21,813 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2024-10-15 14:20:21,916 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 14:20:21,916 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:20:21,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-10-15 14:20:21,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:20:22,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 736 proven. 1855 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-10-15 14:20:22,096 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:20:23,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 736 proven. 1855 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-10-15 14:20:23,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923606518] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:20:23,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:20:23,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 44 [2024-10-15 14:20:23,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816634045] [2024-10-15 14:20:23,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:20:23,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-10-15 14:20:23,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:20:23,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-10-15 14:20:23,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=754, Invalid=1138, Unknown=0, NotChecked=0, Total=1892 [2024-10-15 14:20:23,182 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) [2024-10-15 14:20:23,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:20:23,427 INFO L93 Difference]: Finished difference Result 309 states and 311 transitions. [2024-10-15 14:20:23,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-10-15 14:20:23,427 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 [2024-10-15 14:20:23,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:20:23,429 INFO L225 Difference]: With dead ends: 309 [2024-10-15 14:20:23,429 INFO L226 Difference]: Without dead ends: 307 [2024-10-15 14:20:23,429 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 619 SyntacticMatches, 72 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1722 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=760, Invalid=1220, Unknown=0, NotChecked=0, Total=1980 [2024-10-15 14:20:23,430 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:20:23,430 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 157 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:20:23,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-10-15 14:20:23,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 303. [2024-10-15 14:20:23,449 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) [2024-10-15 14:20:23,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 304 transitions. [2024-10-15 14:20:23,451 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 304 transitions. Word has length 293 [2024-10-15 14:20:23,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:20:23,451 INFO L471 AbstractCegarLoop]: Abstraction has 303 states and 304 transitions. [2024-10-15 14:20:23,451 INFO L472 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) [2024-10-15 14:20:23,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:23,451 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 304 transitions. [2024-10-15 14:20:23,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-10-15 14:20:23,453 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:20:23,453 INFO L215 NwaCegarLoop]: trace histogram [37, 37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:20:23,470 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2024-10-15 14:20:23,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,72 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:23,654 INFO L396 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:20:23,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:23,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1885880117, now seen corresponding path program 71 times [2024-10-15 14:20:23,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:20:23,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905956195] [2024-10-15 14:20:23,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:20:23,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:20:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:20:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-15 14:20:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-15 14:20:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-15 14:20:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-15 14:20:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-15 14:20:25,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-15 14:20:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-15 14:20:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-15 14:20:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-15 14:20:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-15 14:20:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-15 14:20:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-10-15 14:20:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-10-15 14:20:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-10-15 14:20:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-10-15 14:20:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-10-15 14:20:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-10-15 14:20:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-10-15 14:20:25,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-10-15 14:20:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-10-15 14:20:25,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-10-15 14:20:25,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,711 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-10-15 14:20:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-10-15 14:20:25,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-10-15 14:20:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-10-15 14:20:25,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-10-15 14:20:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-10-15 14:20:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-10-15 14:20:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,718 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-10-15 14:20:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-10-15 14:20:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-10-15 14:20:25,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-10-15 14:20:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-10-15 14:20:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-10-15 14:20:25,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-10-15 14:20:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-10-15 14:20:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,726 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 1928 proven. 772 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-10-15 14:20:25,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:20:25,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905956195] [2024-10-15 14:20:25,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905956195] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:20:25,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753967826] [2024-10-15 14:20:25,726 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 14:20:25,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:25,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:20:25,727 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) [2024-10-15 14:20:25,728 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2024-10-15 14:20:25,855 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2024-10-15 14:20:25,855 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:20:25,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-10-15 14:20:25,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:20:27,898 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-10-15 14:20:27,898 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:20:29,590 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-10-15 14:20:29,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753967826] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:20:29,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:20:29,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77, 77] total 116 [2024-10-15 14:20:29,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068115989] [2024-10-15 14:20:29,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:20:29,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2024-10-15 14:20:29,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:20:29,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2024-10-15 14:20:29,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3007, Invalid=10333, Unknown=0, NotChecked=0, Total=13340 [2024-10-15 14:20:29,593 INFO L87 Difference]: Start difference. First operand 303 states and 304 transitions. Second operand has 116 states, 116 states have (on average 1.706896551724138) internal successors, (198), 116 states have internal predecessors, (198), 75 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2024-10-15 14:20:30,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:20:30,052 INFO L93 Difference]: Finished difference Result 423 states and 461 transitions. [2024-10-15 14:20:30,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-10-15 14:20:30,052 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 1.706896551724138) internal successors, (198), 116 states have internal predecessors, (198), 75 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) Word has length 300 [2024-10-15 14:20:30,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:20:30,054 INFO L225 Difference]: With dead ends: 423 [2024-10-15 14:20:30,055 INFO L226 Difference]: Without dead ends: 304 [2024-10-15 14:20:30,056 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 563 SyntacticMatches, 73 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8676 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=3007, Invalid=10333, Unknown=0, NotChecked=0, Total=13340 [2024-10-15 14:20:30,056 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 14:20:30,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 681 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 14:20:30,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-10-15 14:20:30,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2024-10-15 14:20:30,077 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) [2024-10-15 14:20:30,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 305 transitions. [2024-10-15 14:20:30,078 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 305 transitions. Word has length 300 [2024-10-15 14:20:30,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:20:30,079 INFO L471 AbstractCegarLoop]: Abstraction has 304 states and 305 transitions. [2024-10-15 14:20:30,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 1.706896551724138) internal successors, (198), 116 states have internal predecessors, (198), 75 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2024-10-15 14:20:30,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:30,079 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 305 transitions. [2024-10-15 14:20:30,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-10-15 14:20:30,081 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:20:30,081 INFO L215 NwaCegarLoop]: trace histogram [37, 37, 37, 37, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:20:30,097 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2024-10-15 14:20:30,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,73 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:30,282 INFO L396 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:20:30,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:30,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1880741417, now seen corresponding path program 72 times [2024-10-15 14:20:30,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:20:30,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411496319] [2024-10-15 14:20:30,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:20:30,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:20:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,391 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:20:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,392 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-15 14:20:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-15 14:20:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-15 14:20:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-15 14:20:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-15 14:20:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-15 14:20:31,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-15 14:20:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,398 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-10-15 14:20:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-15 14:20:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-15 14:20:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-15 14:20:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-10-15 14:20:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-10-15 14:20:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-10-15 14:20:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,404 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-10-15 14:20:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-15 14:20:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-15 14:20:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-10-15 14:20:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,407 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-10-15 14:20:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,408 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-10-15 14:20:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-10-15 14:20:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-10-15 14:20:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-10-15 14:20:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-10-15 14:20:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,412 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-10-15 14:20:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-10-15 14:20:31,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-10-15 14:20:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-10-15 14:20:31,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,415 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-10-15 14:20:31,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-10-15 14:20:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-10-15 14:20:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-10-15 14:20:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-10-15 14:20:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,419 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-10-15 14:20:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-10-15 14:20:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-10-15 14:20:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:31,422 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 738 proven. 1999 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-10-15 14:20:31,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:20:31,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411496319] [2024-10-15 14:20:31,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411496319] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:20:31,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646608208] [2024-10-15 14:20:31,422 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 14:20:31,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:31,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:20:31,424 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) [2024-10-15 14:20:31,424 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2024-10-15 14:20:31,559 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2024-10-15 14:20:31,560 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:20:31,563 INFO L255 TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-10-15 14:20:31,575 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:20:31,758 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 775 proven. 1962 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-10-15 14:20:31,758 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:20:32,928 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 775 proven. 1962 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-10-15 14:20:32,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646608208] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:20:32,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:20:32,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 45 [2024-10-15 14:20:32,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277848370] [2024-10-15 14:20:32,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:20:32,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-10-15 14:20:32,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:20:32,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-10-15 14:20:32,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=793, Invalid=1187, Unknown=0, NotChecked=0, Total=1980 [2024-10-15 14:20:32,929 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) [2024-10-15 14:20:33,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:20:33,142 INFO L93 Difference]: Finished difference Result 317 states and 319 transitions. [2024-10-15 14:20:33,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-10-15 14:20:33,142 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 [2024-10-15 14:20:33,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:20:33,144 INFO L225 Difference]: With dead ends: 317 [2024-10-15 14:20:33,144 INFO L226 Difference]: Without dead ends: 315 [2024-10-15 14:20:33,144 INFO L431 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 [2024-10-15 14:20:33,144 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:20:33,145 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 113 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:20:33,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-10-15 14:20:33,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 311. [2024-10-15 14:20:33,163 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) [2024-10-15 14:20:33,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 312 transitions. [2024-10-15 14:20:33,164 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 312 transitions. Word has length 301 [2024-10-15 14:20:33,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:20:33,164 INFO L471 AbstractCegarLoop]: Abstraction has 311 states and 312 transitions. [2024-10-15 14:20:33,165 INFO L472 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) [2024-10-15 14:20:33,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:33,165 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 312 transitions. [2024-10-15 14:20:33,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-10-15 14:20:33,166 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:20:33,166 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:20:33,183 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2024-10-15 14:20:33,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,74 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:33,367 INFO L396 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:20:33,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:33,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1536568468, now seen corresponding path program 73 times [2024-10-15 14:20:33,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:20:33,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732312826] [2024-10-15 14:20:33,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:20:33,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:20:33,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:20:35,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,506 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-15 14:20:35,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-15 14:20:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-15 14:20:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-15 14:20:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-15 14:20:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,510 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-15 14:20:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-15 14:20:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-10-15 14:20:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-15 14:20:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-15 14:20:35,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-15 14:20:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-10-15 14:20:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-10-15 14:20:35,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-10-15 14:20:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-10-15 14:20:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-15 14:20:35,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-15 14:20:35,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,520 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-10-15 14:20:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-10-15 14:20:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-10-15 14:20:35,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,523 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-10-15 14:20:35,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,523 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-10-15 14:20:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-10-15 14:20:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,525 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-10-15 14:20:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,526 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-10-15 14:20:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,527 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-10-15 14:20:35,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-10-15 14:20:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-10-15 14:20:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,529 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-10-15 14:20:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-10-15 14:20:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-10-15 14:20:35,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-10-15 14:20:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-10-15 14:20:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-10-15 14:20:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-10-15 14:20:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-10-15 14:20:35,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-10-15 14:20:35,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,538 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2037 proven. 812 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-10-15 14:20:35,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:20:35,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732312826] [2024-10-15 14:20:35,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732312826] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:20:35,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565628400] [2024-10-15 14:20:35,538 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 14:20:35,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:35,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:20:35,539 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) [2024-10-15 14:20:35,540 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2024-10-15 14:20:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:35,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-10-15 14:20:35,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:20:37,737 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-10-15 14:20:37,737 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:20:39,456 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-10-15 14:20:39,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565628400] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:20:39,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:20:39,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79, 79] total 119 [2024-10-15 14:20:39,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700464534] [2024-10-15 14:20:39,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:20:39,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2024-10-15 14:20:39,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:20:39,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2024-10-15 14:20:39,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3164, Invalid=10878, Unknown=0, NotChecked=0, Total=14042 [2024-10-15 14:20:39,459 INFO L87 Difference]: Start difference. First operand 311 states and 312 transitions. Second operand has 119 states, 119 states have (on average 1.7058823529411764) internal successors, (203), 119 states have internal predecessors, (203), 77 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2024-10-15 14:20:39,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:20:39,960 INFO L93 Difference]: Finished difference Result 434 states and 473 transitions. [2024-10-15 14:20:39,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-10-15 14:20:39,961 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 1.7058823529411764) internal successors, (203), 119 states have internal predecessors, (203), 77 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) Word has length 308 [2024-10-15 14:20:39,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:20:39,963 INFO L225 Difference]: With dead ends: 434 [2024-10-15 14:20:39,963 INFO L226 Difference]: Without dead ends: 312 [2024-10-15 14:20:39,964 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 770 GetRequests, 578 SyntacticMatches, 75 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9139 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=3164, Invalid=10878, Unknown=0, NotChecked=0, Total=14042 [2024-10-15 14:20:39,964 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-15 14:20:39,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 600 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-15 14:20:39,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-10-15 14:20:40,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2024-10-15 14:20:40,015 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) [2024-10-15 14:20:40,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 313 transitions. [2024-10-15 14:20:40,017 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 313 transitions. Word has length 308 [2024-10-15 14:20:40,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:20:40,017 INFO L471 AbstractCegarLoop]: Abstraction has 312 states and 313 transitions. [2024-10-15 14:20:40,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 1.7058823529411764) internal successors, (203), 119 states have internal predecessors, (203), 77 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2024-10-15 14:20:40,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:40,018 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 313 transitions. [2024-10-15 14:20:40,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-10-15 14:20:40,020 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:20:40,020 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 38, 38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:20:40,039 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2024-10-15 14:20:40,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,75 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:40,221 INFO L396 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:20:40,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:40,222 INFO L85 PathProgramCache]: Analyzing trace with hash 2071228536, now seen corresponding path program 74 times [2024-10-15 14:20:40,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:20:40,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081959650] [2024-10-15 14:20:40,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:20:40,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:20:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,426 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:20:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-15 14:20:41,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-15 14:20:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-15 14:20:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,430 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-15 14:20:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,431 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-15 14:20:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-15 14:20:41,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-15 14:20:41,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-15 14:20:41,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,434 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-15 14:20:41,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-10-15 14:20:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-10-15 14:20:41,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,436 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-15 14:20:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-15 14:20:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-10-15 14:20:41,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,439 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-15 14:20:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,440 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-10-15 14:20:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,440 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-15 14:20:41,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,441 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-10-15 14:20:41,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-10-15 14:20:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,443 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-10-15 14:20:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,443 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-10-15 14:20:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,444 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-10-15 14:20:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-10-15 14:20:41,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,446 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-10-15 14:20:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-10-15 14:20:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-10-15 14:20:41,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,450 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-10-15 14:20:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-10-15 14:20:41,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-10-15 14:20:41,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,452 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-10-15 14:20:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,453 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-10-15 14:20:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,454 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-10-15 14:20:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-10-15 14:20:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-10-15 14:20:41,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-10-15 14:20:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,457 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-10-15 14:20:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-10-15 14:20:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,459 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 777 proven. 2110 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-10-15 14:20:41,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:20:41,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081959650] [2024-10-15 14:20:41,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081959650] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:20:41,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255557190] [2024-10-15 14:20:41,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:20:41,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:41,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:20:41,461 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) [2024-10-15 14:20:41,461 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2024-10-15 14:20:41,566 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:20:41,566 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:20:41,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-10-15 14:20:41,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:20:41,736 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 815 proven. 2072 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-10-15 14:20:41,736 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:20:42,962 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 815 proven. 2072 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-10-15 14:20:42,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255557190] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:20:42,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:20:42,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 46 [2024-10-15 14:20:42,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135422979] [2024-10-15 14:20:42,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:20:42,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-10-15 14:20:42,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:20:42,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-10-15 14:20:42,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=833, Invalid=1237, Unknown=0, NotChecked=0, Total=2070 [2024-10-15 14:20:42,964 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) [2024-10-15 14:20:43,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:20:43,202 INFO L93 Difference]: Finished difference Result 325 states and 327 transitions. [2024-10-15 14:20:43,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-10-15 14:20:43,203 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 [2024-10-15 14:20:43,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:20:43,204 INFO L225 Difference]: With dead ends: 325 [2024-10-15 14:20:43,204 INFO L226 Difference]: Without dead ends: 323 [2024-10-15 14:20:43,205 INFO L431 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 [2024-10-15 14:20:43,205 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:20:43,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 138 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:20:43,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-10-15 14:20:43,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 319. [2024-10-15 14:20:43,225 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) [2024-10-15 14:20:43,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 320 transitions. [2024-10-15 14:20:43,226 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 320 transitions. Word has length 309 [2024-10-15 14:20:43,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:20:43,226 INFO L471 AbstractCegarLoop]: Abstraction has 319 states and 320 transitions. [2024-10-15 14:20:43,226 INFO L472 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) [2024-10-15 14:20:43,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:43,227 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 320 transitions. [2024-10-15 14:20:43,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2024-10-15 14:20:43,227 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:20:43,228 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:20:43,240 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2024-10-15 14:20:43,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,76 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:43,428 INFO L396 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:20:43,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:43,428 INFO L85 PathProgramCache]: Analyzing trace with hash 603850155, now seen corresponding path program 75 times [2024-10-15 14:20:43,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:20:43,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103794740] [2024-10-15 14:20:43,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:20:43,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:20:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:20:45,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-15 14:20:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-15 14:20:45,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-15 14:20:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-15 14:20:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-15 14:20:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,686 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-15 14:20:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-15 14:20:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-15 14:20:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-15 14:20:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-10-15 14:20:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-10-15 14:20:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-15 14:20:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-15 14:20:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-10-15 14:20:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-15 14:20:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-10-15 14:20:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-15 14:20:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-10-15 14:20:45,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-10-15 14:20:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-10-15 14:20:45,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-10-15 14:20:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-10-15 14:20:45,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-10-15 14:20:45,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-10-15 14:20:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-10-15 14:20:45,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-10-15 14:20:45,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-10-15 14:20:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-10-15 14:20:45,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-10-15 14:20:45,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-10-15 14:20:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-10-15 14:20:45,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-10-15 14:20:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-10-15 14:20:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-10-15 14:20:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,711 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-10-15 14:20:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-10-15 14:20:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-10-15 14:20:45,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-10-15 14:20:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:45,716 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2149 proven. 853 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-10-15 14:20:45,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:20:45,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103794740] [2024-10-15 14:20:45,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103794740] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:20:45,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055350515] [2024-10-15 14:20:45,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 14:20:45,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:45,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:20:45,718 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) [2024-10-15 14:20:45,718 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2024-10-15 14:20:45,857 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2024-10-15 14:20:45,857 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:20:45,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-10-15 14:20:45,863 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:20:48,049 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-10-15 14:20:48,049 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:20:49,833 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-10-15 14:20:49,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055350515] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:20:49,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:20:49,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81, 81] total 122 [2024-10-15 14:20:49,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094073387] [2024-10-15 14:20:49,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:20:49,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2024-10-15 14:20:49,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:20:49,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2024-10-15 14:20:49,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3325, Invalid=11437, Unknown=0, NotChecked=0, Total=14762 [2024-10-15 14:20:49,836 INFO L87 Difference]: Start difference. First operand 319 states and 320 transitions. Second operand has 122 states, 122 states have (on average 1.7049180327868851) internal successors, (208), 122 states have internal predecessors, (208), 79 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2024-10-15 14:20:50,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:20:50,421 INFO L93 Difference]: Finished difference Result 445 states and 485 transitions. [2024-10-15 14:20:50,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-10-15 14:20:50,422 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 1.7049180327868851) internal successors, (208), 122 states have internal predecessors, (208), 79 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) Word has length 316 [2024-10-15 14:20:50,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:20:50,424 INFO L225 Difference]: With dead ends: 445 [2024-10-15 14:20:50,424 INFO L226 Difference]: Without dead ends: 320 [2024-10-15 14:20:50,425 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 790 GetRequests, 593 SyntacticMatches, 77 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9614 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=3325, Invalid=11437, Unknown=0, NotChecked=0, Total=14762 [2024-10-15 14:20:50,425 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 0 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-15 14:20:50,426 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 930 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-15 14:20:50,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-10-15 14:20:50,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2024-10-15 14:20:50,460 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) [2024-10-15 14:20:50,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 321 transitions. [2024-10-15 14:20:50,461 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 321 transitions. Word has length 316 [2024-10-15 14:20:50,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:20:50,461 INFO L471 AbstractCegarLoop]: Abstraction has 320 states and 321 transitions. [2024-10-15 14:20:50,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 1.7049180327868851) internal successors, (208), 122 states have internal predecessors, (208), 79 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2024-10-15 14:20:50,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:50,461 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 321 transitions. [2024-10-15 14:20:50,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-10-15 14:20:50,462 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:20:50,462 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 39, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:20:50,475 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2024-10-15 14:20:50,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2024-10-15 14:20:50,663 INFO L396 AbstractCegarLoop]: === Iteration 79 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:20:50,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:50,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1011930807, now seen corresponding path program 76 times [2024-10-15 14:20:50,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:20:50,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617571800] [2024-10-15 14:20:50,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:20:50,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:20:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:20:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,911 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-15 14:20:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,912 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-15 14:20:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-15 14:20:51,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-15 14:20:51,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,914 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-15 14:20:51,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,915 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-10-15 14:20:51,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-15 14:20:51,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-15 14:20:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-10-15 14:20:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-10-15 14:20:51,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,919 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-15 14:20:51,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-15 14:20:51,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-15 14:20:51,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-10-15 14:20:51,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-10-15 14:20:51,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-10-15 14:20:51,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-10-15 14:20:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-10-15 14:20:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-10-15 14:20:51,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-10-15 14:20:51,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-10-15 14:20:51,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-10-15 14:20:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-10-15 14:20:51,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,929 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-10-15 14:20:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-10-15 14:20:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-10-15 14:20:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-10-15 14:20:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-10-15 14:20:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-10-15 14:20:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,935 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-10-15 14:20:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-10-15 14:20:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-10-15 14:20:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-10-15 14:20:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-10-15 14:20:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-10-15 14:20:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-10-15 14:20:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-10-15 14:20:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-10-15 14:20:51,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:51,946 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 817 proven. 2224 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-10-15 14:20:51,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:20:51,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617571800] [2024-10-15 14:20:51,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617571800] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:20:51,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239517673] [2024-10-15 14:20:51,947 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 14:20:51,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:51,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:20:51,949 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) [2024-10-15 14:20:51,950 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2024-10-15 14:20:52,061 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 14:20:52,061 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:20:52,064 INFO L255 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-10-15 14:20:52,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:20:52,241 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 856 proven. 2185 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-10-15 14:20:52,241 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:20:53,459 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 856 proven. 2185 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-10-15 14:20:53,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239517673] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:20:53,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:20:53,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 47 [2024-10-15 14:20:53,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749117570] [2024-10-15 14:20:53,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:20:53,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-10-15 14:20:53,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:20:53,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-10-15 14:20:53,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=874, Invalid=1288, Unknown=0, NotChecked=0, Total=2162 [2024-10-15 14:20:53,461 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) [2024-10-15 14:20:53,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:20:53,721 INFO L93 Difference]: Finished difference Result 333 states and 335 transitions. [2024-10-15 14:20:53,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-10-15 14:20:53,721 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 [2024-10-15 14:20:53,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:20:53,724 INFO L225 Difference]: With dead ends: 333 [2024-10-15 14:20:53,724 INFO L226 Difference]: Without dead ends: 331 [2024-10-15 14:20:53,724 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 794 GetRequests, 670 SyntacticMatches, 78 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1983 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=880, Invalid=1376, Unknown=0, NotChecked=0, Total=2256 [2024-10-15 14:20:53,725 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:20:53,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 160 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:20:53,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-10-15 14:20:53,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 327. [2024-10-15 14:20:53,755 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) [2024-10-15 14:20:53,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 328 transitions. [2024-10-15 14:20:53,757 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 328 transitions. Word has length 317 [2024-10-15 14:20:53,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:20:53,757 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 328 transitions. [2024-10-15 14:20:53,758 INFO L472 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) [2024-10-15 14:20:53,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:53,758 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 328 transitions. [2024-10-15 14:20:53,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-10-15 14:20:53,759 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:20:53,760 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:20:53,778 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2024-10-15 14:20:53,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2024-10-15 14:20:53,960 INFO L396 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:20:53,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:53,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1005382284, now seen corresponding path program 77 times [2024-10-15 14:20:53,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:20:53,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229734970] [2024-10-15 14:20:53,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:20:53,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:20:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,331 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:20:56,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-15 14:20:56,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-15 14:20:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-15 14:20:56,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-15 14:20:56,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-15 14:20:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-10-15 14:20:56,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-15 14:20:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-15 14:20:56,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-10-15 14:20:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-10-15 14:20:56,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-15 14:20:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-15 14:20:56,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,345 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-15 14:20:56,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-10-15 14:20:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-10-15 14:20:56,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-10-15 14:20:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-10-15 14:20:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-10-15 14:20:56,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-10-15 14:20:56,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,353 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-10-15 14:20:56,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,354 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-10-15 14:20:56,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-10-15 14:20:56,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,357 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-10-15 14:20:56,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,358 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-10-15 14:20:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,359 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-10-15 14:20:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-10-15 14:20:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-10-15 14:20:56,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-10-15 14:20:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,364 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-10-15 14:20:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-10-15 14:20:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-10-15 14:20:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-10-15 14:20:56,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,368 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-10-15 14:20:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-10-15 14:20:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-10-15 14:20:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-10-15 14:20:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-10-15 14:20:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-10-15 14:20:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-10-15 14:20:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:56,377 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2264 proven. 895 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-10-15 14:20:56,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:20:56,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229734970] [2024-10-15 14:20:56,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229734970] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:20:56,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403075653] [2024-10-15 14:20:56,378 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 14:20:56,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:56,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:20:56,380 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) [2024-10-15 14:20:56,381 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2024-10-15 14:20:56,549 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2024-10-15 14:20:56,549 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:20:56,552 INFO L255 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-10-15 14:20:56,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:20:58,826 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-10-15 14:20:58,826 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:21:00,683 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-10-15 14:21:00,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403075653] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:21:00,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:21:00,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83, 83] total 125 [2024-10-15 14:21:00,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587380701] [2024-10-15 14:21:00,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:21:00,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2024-10-15 14:21:00,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:21:00,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2024-10-15 14:21:00,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3490, Invalid=12010, Unknown=0, NotChecked=0, Total=15500 [2024-10-15 14:21:00,686 INFO L87 Difference]: Start difference. First operand 327 states and 328 transitions. Second operand has 125 states, 125 states have (on average 1.704) internal successors, (213), 125 states have internal predecessors, (213), 81 states have call successors, (82), 2 states have call predecessors, (82), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2024-10-15 14:21:01,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:21:01,314 INFO L93 Difference]: Finished difference Result 456 states and 497 transitions. [2024-10-15 14:21:01,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-10-15 14:21:01,315 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 125 states have (on average 1.704) internal successors, (213), 125 states have internal predecessors, (213), 81 states have call successors, (82), 2 states have call predecessors, (82), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) Word has length 324 [2024-10-15 14:21:01,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:21:01,317 INFO L225 Difference]: With dead ends: 456 [2024-10-15 14:21:01,317 INFO L226 Difference]: Without dead ends: 328 [2024-10-15 14:21:01,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 810 GetRequests, 608 SyntacticMatches, 79 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10101 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=3490, Invalid=12010, Unknown=0, NotChecked=0, Total=15500 [2024-10-15 14:21:01,318 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 0 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-15 14:21:01,318 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 983 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-15 14:21:01,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-10-15 14:21:01,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2024-10-15 14:21:01,344 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) [2024-10-15 14:21:01,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 329 transitions. [2024-10-15 14:21:01,346 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 329 transitions. Word has length 324 [2024-10-15 14:21:01,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:21:01,346 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 329 transitions. [2024-10-15 14:21:01,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 125 states have (on average 1.704) internal successors, (213), 125 states have internal predecessors, (213), 81 states have call successors, (82), 2 states have call predecessors, (82), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2024-10-15 14:21:01,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:01,346 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 329 transitions. [2024-10-15 14:21:01,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2024-10-15 14:21:01,347 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:21:01,347 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:21:01,360 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2024-10-15 14:21:01,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,79 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:21:01,548 INFO L396 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:21:01,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:01,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1273761896, now seen corresponding path program 78 times [2024-10-15 14:21:01,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:21:01,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758662890] [2024-10-15 14:21:01,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:21:01,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:21:01,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:21:02,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,870 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-15 14:21:02,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,870 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-15 14:21:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,871 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-15 14:21:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-15 14:21:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,873 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-15 14:21:02,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,873 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-15 14:21:02,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,874 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-15 14:21:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,875 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-10-15 14:21:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,876 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-15 14:21:02,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,877 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-15 14:21:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,877 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-10-15 14:21:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,878 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-15 14:21:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-10-15 14:21:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,880 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-10-15 14:21:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,880 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-10-15 14:21:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,881 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-15 14:21:02,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,882 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-10-15 14:21:02,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,883 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-10-15 14:21:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-10-15 14:21:02,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-10-15 14:21:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-10-15 14:21:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-10-15 14:21:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-10-15 14:21:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-10-15 14:21:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-10-15 14:21:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,889 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-10-15 14:21:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-10-15 14:21:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,891 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-10-15 14:21:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-10-15 14:21:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-10-15 14:21:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-10-15 14:21:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-10-15 14:21:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,895 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-10-15 14:21:02,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-10-15 14:21:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-10-15 14:21:02,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,898 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-10-15 14:21:02,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-10-15 14:21:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-10-15 14:21:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-10-15 14:21:02,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:02,903 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 858 proven. 2341 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-10-15 14:21:02,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:21:02,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758662890] [2024-10-15 14:21:02,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758662890] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:21:02,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355802136] [2024-10-15 14:21:02,904 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 14:21:02,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:21:02,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:21:02,905 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) [2024-10-15 14:21:02,906 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2024-10-15 14:21:03,050 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2024-10-15 14:21:03,050 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:21:03,053 INFO L255 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-10-15 14:21:03,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:21:03,235 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 898 proven. 2301 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-10-15 14:21:03,235 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:21:04,645 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 898 proven. 2301 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-10-15 14:21:04,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355802136] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:21:04,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:21:04,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 48 [2024-10-15 14:21:04,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248611177] [2024-10-15 14:21:04,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:21:04,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-10-15 14:21:04,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:21:04,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-10-15 14:21:04,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=916, Invalid=1340, Unknown=0, NotChecked=0, Total=2256 [2024-10-15 14:21:04,647 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) [2024-10-15 14:21:04,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:21:04,867 INFO L93 Difference]: Finished difference Result 341 states and 343 transitions. [2024-10-15 14:21:04,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-10-15 14:21:04,867 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 [2024-10-15 14:21:04,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:21:04,869 INFO L225 Difference]: With dead ends: 341 [2024-10-15 14:21:04,869 INFO L226 Difference]: Without dead ends: 339 [2024-10-15 14:21:04,869 INFO L431 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 [2024-10-15 14:21:04,870 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:21:04,870 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 98 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:21:04,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2024-10-15 14:21:04,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 335. [2024-10-15 14:21:04,891 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) [2024-10-15 14:21:04,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 336 transitions. [2024-10-15 14:21:04,892 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 336 transitions. Word has length 325 [2024-10-15 14:21:04,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:21:04,892 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 336 transitions. [2024-10-15 14:21:04,892 INFO L472 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) [2024-10-15 14:21:04,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:04,892 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 336 transitions. [2024-10-15 14:21:04,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-10-15 14:21:04,893 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:21:04,893 INFO L215 NwaCegarLoop]: trace histogram [41, 41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:21:04,906 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2024-10-15 14:21:05,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,80 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:21:05,094 INFO L396 AbstractCegarLoop]: === Iteration 82 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:21:05,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:05,094 INFO L85 PathProgramCache]: Analyzing trace with hash 2078753419, now seen corresponding path program 79 times [2024-10-15 14:21:05,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:21:05,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984200510] [2024-10-15 14:21:05,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:21:05,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:21:05,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:21:07,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,595 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-15 14:21:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-15 14:21:07,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-15 14:21:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-15 14:21:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-15 14:21:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-15 14:21:07,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-15 14:21:07,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-10-15 14:21:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-15 14:21:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-15 14:21:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-10-15 14:21:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-15 14:21:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,606 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-10-15 14:21:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-10-15 14:21:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-10-15 14:21:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-15 14:21:07,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,609 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-10-15 14:21:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-10-15 14:21:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-10-15 14:21:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-10-15 14:21:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-10-15 14:21:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-10-15 14:21:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-10-15 14:21:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-10-15 14:21:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-10-15 14:21:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-10-15 14:21:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-10-15 14:21:07,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-10-15 14:21:07,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-10-15 14:21:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-10-15 14:21:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-10-15 14:21:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-10-15 14:21:07,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-10-15 14:21:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-10-15 14:21:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-10-15 14:21:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-10-15 14:21:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-10-15 14:21:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-10-15 14:21:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-10-15 14:21:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-10-15 14:21:07,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,631 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2382 proven. 938 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-10-15 14:21:07,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:21:07,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984200510] [2024-10-15 14:21:07,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984200510] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:21:07,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001642718] [2024-10-15 14:21:07,632 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 14:21:07,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:21:07,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:21:07,633 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) [2024-10-15 14:21:07,634 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2024-10-15 14:21:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:07,746 INFO L255 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-10-15 14:21:07,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:21:10,147 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-10-15 14:21:10,147 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:21:12,124 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-10-15 14:21:12,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001642718] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:21:12,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:21:12,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85, 85] total 128 [2024-10-15 14:21:12,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987088383] [2024-10-15 14:21:12,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:21:12,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2024-10-15 14:21:12,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:21:12,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2024-10-15 14:21:12,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3659, Invalid=12597, Unknown=0, NotChecked=0, Total=16256 [2024-10-15 14:21:12,126 INFO L87 Difference]: Start difference. First operand 335 states and 336 transitions. Second operand has 128 states, 128 states have (on average 1.703125) internal successors, (218), 128 states have internal predecessors, (218), 83 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2024-10-15 14:21:12,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:21:12,730 INFO L93 Difference]: Finished difference Result 467 states and 509 transitions. [2024-10-15 14:21:12,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-10-15 14:21:12,731 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 1.703125) internal successors, (218), 128 states have internal predecessors, (218), 83 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) Word has length 332 [2024-10-15 14:21:12,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:21:12,734 INFO L225 Difference]: With dead ends: 467 [2024-10-15 14:21:12,734 INFO L226 Difference]: Without dead ends: 336 [2024-10-15 14:21:12,735 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 623 SyntacticMatches, 81 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10600 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=3659, Invalid=12597, Unknown=0, NotChecked=0, Total=16256 [2024-10-15 14:21:12,736 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 0 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-15 14:21:12,736 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 793 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1128 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-15 14:21:12,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-10-15 14:21:12,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2024-10-15 14:21:12,770 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) [2024-10-15 14:21:12,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 337 transitions. [2024-10-15 14:21:12,772 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 337 transitions. Word has length 332 [2024-10-15 14:21:12,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:21:12,772 INFO L471 AbstractCegarLoop]: Abstraction has 336 states and 337 transitions. [2024-10-15 14:21:12,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 1.703125) internal successors, (218), 128 states have internal predecessors, (218), 83 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2024-10-15 14:21:12,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:12,773 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 337 transitions. [2024-10-15 14:21:12,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2024-10-15 14:21:12,774 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:21:12,774 INFO L215 NwaCegarLoop]: trace histogram [41, 41, 41, 41, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:21:12,791 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2024-10-15 14:21:12,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,81 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:21:12,975 INFO L396 AbstractCegarLoop]: === Iteration 83 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:21:12,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:12,975 INFO L85 PathProgramCache]: Analyzing trace with hash 644774807, now seen corresponding path program 80 times [2024-10-15 14:21:12,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:21:12,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117113731] [2024-10-15 14:21:12,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:21:12,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:21:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,388 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:21:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,389 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-15 14:21:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-15 14:21:14,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-15 14:21:14,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,391 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-15 14:21:14,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,392 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-15 14:21:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-15 14:21:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-15 14:21:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-15 14:21:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-15 14:21:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-15 14:21:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-10-15 14:21:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-10-15 14:21:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,398 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-10-15 14:21:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-10-15 14:21:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-10-15 14:21:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-10-15 14:21:14,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-10-15 14:21:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-10-15 14:21:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-10-15 14:21:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,404 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-10-15 14:21:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-10-15 14:21:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-10-15 14:21:14,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-10-15 14:21:14,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,407 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-10-15 14:21:14,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,408 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-10-15 14:21:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-10-15 14:21:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-10-15 14:21:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-10-15 14:21:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-10-15 14:21:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,412 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-10-15 14:21:14,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-10-15 14:21:14,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-10-15 14:21:14,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-10-15 14:21:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,415 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-10-15 14:21:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-10-15 14:21:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-10-15 14:21:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-10-15 14:21:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-10-15 14:21:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,419 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-10-15 14:21:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-10-15 14:21:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,421 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 900 proven. 2461 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-10-15 14:21:14,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:21:14,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117113731] [2024-10-15 14:21:14,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117113731] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:21:14,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567328365] [2024-10-15 14:21:14,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:21:14,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:21:14,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:21:14,423 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) [2024-10-15 14:21:14,424 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2024-10-15 14:21:14,539 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:21:14,539 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:21:14,542 INFO L255 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-10-15 14:21:14,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:21:14,730 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 941 proven. 2420 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-10-15 14:21:14,730 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:21:16,165 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 941 proven. 2420 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-10-15 14:21:16,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567328365] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:21:16,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:21:16,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 49 [2024-10-15 14:21:16,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013744453] [2024-10-15 14:21:16,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:21:16,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-10-15 14:21:16,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:21:16,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-10-15 14:21:16,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=959, Invalid=1393, Unknown=0, NotChecked=0, Total=2352 [2024-10-15 14:21:16,167 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) [2024-10-15 14:21:16,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:21:16,440 INFO L93 Difference]: Finished difference Result 349 states and 351 transitions. [2024-10-15 14:21:16,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-10-15 14:21:16,441 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 [2024-10-15 14:21:16,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:21:16,443 INFO L225 Difference]: With dead ends: 349 [2024-10-15 14:21:16,443 INFO L226 Difference]: Without dead ends: 347 [2024-10-15 14:21:16,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 702 SyntacticMatches, 84 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2251 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=965, Invalid=1485, Unknown=0, NotChecked=0, Total=2450 [2024-10-15 14:21:16,443 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:21:16,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 155 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:21:16,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-10-15 14:21:16,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 343. [2024-10-15 14:21:16,467 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) [2024-10-15 14:21:16,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 344 transitions. [2024-10-15 14:21:16,469 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 344 transitions. Word has length 333 [2024-10-15 14:21:16,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:21:16,469 INFO L471 AbstractCegarLoop]: Abstraction has 343 states and 344 transitions. [2024-10-15 14:21:16,469 INFO L472 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) [2024-10-15 14:21:16,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:16,470 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 344 transitions. [2024-10-15 14:21:16,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2024-10-15 14:21:16,471 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:21:16,471 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:21:16,488 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2024-10-15 14:21:16,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2024-10-15 14:21:16,672 INFO L396 AbstractCegarLoop]: === Iteration 84 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:21:16,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:16,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1291192748, now seen corresponding path program 81 times [2024-10-15 14:21:16,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:21:16,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333017365] [2024-10-15 14:21:16,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:21:16,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:21:16,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,377 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:21:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-15 14:21:19,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,379 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-15 14:21:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-15 14:21:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,381 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-15 14:21:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,382 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-15 14:21:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,383 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-15 14:21:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,383 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-15 14:21:19,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,384 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-15 14:21:19,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,385 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-15 14:21:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,386 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-15 14:21:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-10-15 14:21:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,388 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-10-15 14:21:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,388 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-10-15 14:21:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,389 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-10-15 14:21:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-10-15 14:21:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,391 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-10-15 14:21:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,392 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-10-15 14:21:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-10-15 14:21:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-10-15 14:21:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-10-15 14:21:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-10-15 14:21:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-10-15 14:21:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-10-15 14:21:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-10-15 14:21:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-10-15 14:21:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,404 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-10-15 14:21:19,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-10-15 14:21:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-10-15 14:21:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,408 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-10-15 14:21:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-10-15 14:21:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-10-15 14:21:19,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-10-15 14:21:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-10-15 14:21:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-10-15 14:21:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,415 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-10-15 14:21:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-10-15 14:21:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-10-15 14:21:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-10-15 14:21:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,430 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-10-15 14:21:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,431 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-10-15 14:21:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-10-15 14:21:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:19,434 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2503 proven. 982 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-10-15 14:21:19,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:21:19,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333017365] [2024-10-15 14:21:19,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333017365] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:21:19,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256252432] [2024-10-15 14:21:19,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 14:21:19,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:21:19,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:21:19,437 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) [2024-10-15 14:21:19,438 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2024-10-15 14:21:19,603 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2024-10-15 14:21:19,603 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:21:19,606 INFO L255 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-10-15 14:21:19,610 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:21:22,166 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-10-15 14:21:22,166 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:21:24,269 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-10-15 14:21:24,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256252432] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:21:24,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:21:24,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87, 87] total 131 [2024-10-15 14:21:24,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937448437] [2024-10-15 14:21:24,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:21:24,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2024-10-15 14:21:24,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:21:24,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2024-10-15 14:21:24,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3832, Invalid=13198, Unknown=0, NotChecked=0, Total=17030 [2024-10-15 14:21:24,272 INFO L87 Difference]: Start difference. First operand 343 states and 344 transitions. Second operand has 131 states, 131 states have (on average 1.702290076335878) internal successors, (223), 131 states have internal predecessors, (223), 85 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2024-10-15 14:21:24,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:21:24,998 INFO L93 Difference]: Finished difference Result 478 states and 521 transitions. [2024-10-15 14:21:24,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-10-15 14:21:24,999 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 1.702290076335878) internal successors, (223), 131 states have internal predecessors, (223), 85 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) Word has length 340 [2024-10-15 14:21:24,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:21:25,001 INFO L225 Difference]: With dead ends: 478 [2024-10-15 14:21:25,001 INFO L226 Difference]: Without dead ends: 344 [2024-10-15 14:21:25,003 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 850 GetRequests, 638 SyntacticMatches, 83 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11111 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=3832, Invalid=13198, Unknown=0, NotChecked=0, Total=17030 [2024-10-15 14:21:25,003 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 0 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-15 14:21:25,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 936 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-15 14:21:25,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-10-15 14:21:25,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2024-10-15 14:21:25,038 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) [2024-10-15 14:21:25,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 345 transitions. [2024-10-15 14:21:25,040 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 345 transitions. Word has length 340 [2024-10-15 14:21:25,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:21:25,041 INFO L471 AbstractCegarLoop]: Abstraction has 344 states and 345 transitions. [2024-10-15 14:21:25,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 1.702290076335878) internal successors, (223), 131 states have internal predecessors, (223), 85 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2024-10-15 14:21:25,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:25,041 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 345 transitions. [2024-10-15 14:21:25,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2024-10-15 14:21:25,043 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:21:25,043 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:21:25,062 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2024-10-15 14:21:25,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,83 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:21:25,244 INFO L396 AbstractCegarLoop]: === Iteration 85 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:21:25,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:25,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1335265608, now seen corresponding path program 82 times [2024-10-15 14:21:25,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:21:25,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777378232] [2024-10-15 14:21:25,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:21:25,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:21:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:21:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-15 14:21:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-15 14:21:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 14:21:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-15 14:21:26,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-15 14:21:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-15 14:21:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-15 14:21:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-10-15 14:21:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-15 14:21:26,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-10-15 14:21:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-15 14:21:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-10-15 14:21:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-10-15 14:21:26,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-10-15 14:21:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-15 14:21:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-10-15 14:21:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-10-15 14:21:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-10-15 14:21:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-10-15 14:21:26,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-10-15 14:21:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,711 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-10-15 14:21:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-10-15 14:21:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-10-15 14:21:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-10-15 14:21:26,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-10-15 14:21:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-10-15 14:21:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-10-15 14:21:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-10-15 14:21:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,718 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-10-15 14:21:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,718 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-10-15 14:21:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-10-15 14:21:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-10-15 14:21:26,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-10-15 14:21:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-10-15 14:21:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2024-10-15 14:21:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-10-15 14:21:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-10-15 14:21:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-10-15 14:21:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,726 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2024-10-15 14:21:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-10-15 14:21:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2024-10-15 14:21:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:26,729 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 943 proven. 2584 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-10-15 14:21:26,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:21:26,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777378232] [2024-10-15 14:21:26,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777378232] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:21:26,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993885580] [2024-10-15 14:21:26,729 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 14:21:26,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:21:26,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:21:26,730 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) [2024-10-15 14:21:26,731 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2024-10-15 14:21:26,849 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 14:21:26,849 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:21:26,852 INFO L255 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-10-15 14:21:26,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:21:27,033 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 985 proven. 2542 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-10-15 14:21:27,033 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:21:28,445 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 985 proven. 2542 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-10-15 14:21:28,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993885580] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:21:28,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:21:28,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 50 [2024-10-15 14:21:28,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813926215] [2024-10-15 14:21:28,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:21:28,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-10-15 14:21:28,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:21:28,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-10-15 14:21:28,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1003, Invalid=1447, Unknown=0, NotChecked=0, Total=2450 [2024-10-15 14:21:28,446 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) [2024-10-15 14:21:28,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:21:28,686 INFO L93 Difference]: Finished difference Result 357 states and 359 transitions. [2024-10-15 14:21:28,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-10-15 14:21:28,687 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 [2024-10-15 14:21:28,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:21:28,689 INFO L225 Difference]: With dead ends: 357 [2024-10-15 14:21:28,689 INFO L226 Difference]: Without dead ends: 355 [2024-10-15 14:21:28,689 INFO L431 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 [2024-10-15 14:21:28,690 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:21:28,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 128 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:21:28,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-10-15 14:21:28,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 351. [2024-10-15 14:21:28,725 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) [2024-10-15 14:21:28,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 352 transitions. [2024-10-15 14:21:28,727 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 352 transitions. Word has length 341 [2024-10-15 14:21:28,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:21:28,727 INFO L471 AbstractCegarLoop]: Abstraction has 351 states and 352 transitions. [2024-10-15 14:21:28,728 INFO L472 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) [2024-10-15 14:21:28,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:28,728 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 352 transitions. [2024-10-15 14:21:28,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2024-10-15 14:21:28,729 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:21:28,730 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:21:28,748 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2024-10-15 14:21:28,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,84 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:21:28,930 INFO L396 AbstractCegarLoop]: === Iteration 86 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:21:28,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:28,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1597933717, now seen corresponding path program 83 times [2024-10-15 14:21:28,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:21:28,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059744799] [2024-10-15 14:21:28,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:21:28,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:21:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:21:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-15 14:21:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-15 14:21:31,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 14:21:31,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-15 14:21:31,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-15 14:21:31,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-15 14:21:31,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-15 14:21:31,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-10-15 14:21:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,726 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-15 14:21:31,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-10-15 14:21:31,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-15 14:21:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-10-15 14:21:31,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-10-15 14:21:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-10-15 14:21:31,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,731 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-15 14:21:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-10-15 14:21:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,733 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-10-15 14:21:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-10-15 14:21:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-10-15 14:21:31,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-10-15 14:21:31,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-10-15 14:21:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-10-15 14:21:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-10-15 14:21:31,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,739 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-10-15 14:21:31,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-10-15 14:21:31,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-10-15 14:21:31,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,741 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-10-15 14:21:31,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-10-15 14:21:31,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-10-15 14:21:31,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-10-15 14:21:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-10-15 14:21:31,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,746 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-10-15 14:21:31,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,746 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-10-15 14:21:31,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,747 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-10-15 14:21:31,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,748 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2024-10-15 14:21:31,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,750 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-10-15 14:21:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-10-15 14:21:31,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,752 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-10-15 14:21:31,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2024-10-15 14:21:31,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-10-15 14:21:31,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2024-10-15 14:21:31,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,758 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-10-15 14:21:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:31,760 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2627 proven. 1027 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-10-15 14:21:31,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:21:31,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059744799] [2024-10-15 14:21:31,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059744799] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:21:31,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123283916] [2024-10-15 14:21:31,760 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 14:21:31,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:21:31,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:21:31,763 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) [2024-10-15 14:21:31,765 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2024-10-15 14:21:31,918 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2024-10-15 14:21:31,918 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:21:31,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-10-15 14:21:31,925 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:21:34,579 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2751 proven. 903 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-10-15 14:21:34,579 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:21:36,743 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2751 proven. 903 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-10-15 14:21:36,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123283916] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:21:36,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:21:36,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89, 89] total 134 [2024-10-15 14:21:36,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548019914] [2024-10-15 14:21:36,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:21:36,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2024-10-15 14:21:36,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:21:36,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2024-10-15 14:21:36,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4009, Invalid=13813, Unknown=0, NotChecked=0, Total=17822 [2024-10-15 14:21:36,746 INFO L87 Difference]: Start difference. First operand 351 states and 352 transitions. Second operand has 134 states, 134 states have (on average 1.7014925373134329) internal successors, (228), 134 states have internal predecessors, (228), 87 states have call successors, (88), 2 states have call predecessors, (88), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2024-10-15 14:21:37,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:21:37,653 INFO L93 Difference]: Finished difference Result 489 states and 533 transitions. [2024-10-15 14:21:37,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2024-10-15 14:21:37,654 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 134 states have (on average 1.7014925373134329) internal successors, (228), 134 states have internal predecessors, (228), 87 states have call successors, (88), 2 states have call predecessors, (88), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) Word has length 348 [2024-10-15 14:21:37,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:21:37,657 INFO L225 Difference]: With dead ends: 489 [2024-10-15 14:21:37,657 INFO L226 Difference]: Without dead ends: 352 [2024-10-15 14:21:37,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 870 GetRequests, 653 SyntacticMatches, 85 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11634 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=4009, Invalid=13813, Unknown=0, NotChecked=0, Total=17822 [2024-10-15 14:21:37,660 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 0 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 1576 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 1576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-15 14:21:37,661 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1243 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1576 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-15 14:21:37,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2024-10-15 14:21:37,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2024-10-15 14:21:37,696 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) [2024-10-15 14:21:37,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 353 transitions. [2024-10-15 14:21:37,699 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 353 transitions. Word has length 348 [2024-10-15 14:21:37,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:21:37,699 INFO L471 AbstractCegarLoop]: Abstraction has 352 states and 353 transitions. [2024-10-15 14:21:37,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 1.7014925373134329) internal successors, (228), 134 states have internal predecessors, (228), 87 states have call successors, (88), 2 states have call predecessors, (88), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2024-10-15 14:21:37,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:37,700 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 353 transitions. [2024-10-15 14:21:37,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2024-10-15 14:21:37,701 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:21:37,701 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 43, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:21:37,719 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2024-10-15 14:21:37,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,85 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:21:37,902 INFO L396 AbstractCegarLoop]: === Iteration 87 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:21:37,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:37,902 INFO L85 PathProgramCache]: Analyzing trace with hash -139650953, now seen corresponding path program 84 times [2024-10-15 14:21:37,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:21:37,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70328346] [2024-10-15 14:21:37,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:21:37,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:21:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:21:39,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-15 14:21:39,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,457 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-15 14:21:39,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-15 14:21:39,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-15 14:21:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-15 14:21:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,460 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-15 14:21:39,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-15 14:21:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-15 14:21:39,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-15 14:21:39,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-15 14:21:39,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-10-15 14:21:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-10-15 14:21:39,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-10-15 14:21:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-10-15 14:21:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,467 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-10-15 14:21:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,468 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-10-15 14:21:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,468 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-10-15 14:21:39,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,470 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-10-15 14:21:39,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-10-15 14:21:39,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,472 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-10-15 14:21:39,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-10-15 14:21:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-10-15 14:21:39,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-10-15 14:21:39,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-10-15 14:21:39,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,478 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-10-15 14:21:39,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-10-15 14:21:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,480 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-10-15 14:21:39,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-10-15 14:21:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-10-15 14:21:39,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-10-15 14:21:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-10-15 14:21:39,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-10-15 14:21:39,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-10-15 14:21:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-10-15 14:21:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-10-15 14:21:39,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2024-10-15 14:21:39,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,491 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-10-15 14:21:39,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,492 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2024-10-15 14:21:39,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-10-15 14:21:39,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2024-10-15 14:21:39,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-10-15 14:21:39,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,495 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2024-10-15 14:21:39,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,497 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 987 proven. 2710 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-10-15 14:21:39,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:21:39,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70328346] [2024-10-15 14:21:39,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70328346] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:21:39,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217265059] [2024-10-15 14:21:39,497 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 14:21:39,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:21:39,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:21:39,499 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) [2024-10-15 14:21:39,500 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2024-10-15 14:21:39,657 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2024-10-15 14:21:39,657 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:21:39,661 INFO L255 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-10-15 14:21:39,664 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:21:39,847 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 1030 proven. 2667 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-10-15 14:21:39,847 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:21:41,326 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 1030 proven. 2667 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-10-15 14:21:41,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217265059] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:21:41,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:21:41,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 51 [2024-10-15 14:21:41,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113145623] [2024-10-15 14:21:41,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:21:41,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-10-15 14:21:41,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:21:41,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-10-15 14:21:41,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1048, Invalid=1502, Unknown=0, NotChecked=0, Total=2550 [2024-10-15 14:21:41,328 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) [2024-10-15 14:21:41,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:21:41,584 INFO L93 Difference]: Finished difference Result 365 states and 367 transitions. [2024-10-15 14:21:41,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-10-15 14:21:41,585 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 [2024-10-15 14:21:41,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:21:41,587 INFO L225 Difference]: With dead ends: 365 [2024-10-15 14:21:41,587 INFO L226 Difference]: Without dead ends: 363 [2024-10-15 14:21:41,587 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 874 GetRequests, 738 SyntacticMatches, 86 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2359 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1054, Invalid=1598, Unknown=0, NotChecked=0, Total=2652 [2024-10-15 14:21:41,587 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:21:41,587 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 132 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:21:41,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-10-15 14:21:41,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 359. [2024-10-15 14:21:41,611 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) [2024-10-15 14:21:41,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 360 transitions. [2024-10-15 14:21:41,613 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 360 transitions. Word has length 349 [2024-10-15 14:21:41,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:21:41,613 INFO L471 AbstractCegarLoop]: Abstraction has 359 states and 360 transitions. [2024-10-15 14:21:41,613 INFO L472 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) [2024-10-15 14:21:41,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:41,614 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 360 transitions. [2024-10-15 14:21:41,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2024-10-15 14:21:41,615 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:21:41,615 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:21:41,633 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2024-10-15 14:21:41,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,86 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:21:41,816 INFO L396 AbstractCegarLoop]: === Iteration 88 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:21:41,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:41,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1448554700, now seen corresponding path program 85 times [2024-10-15 14:21:41,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:21:41,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895200725] [2024-10-15 14:21:41,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:21:41,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:21:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:21:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-15 14:21:44,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-15 14:21:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-15 14:21:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-15 14:21:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-15 14:21:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,679 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-15 14:21:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-15 14:21:44,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-15 14:21:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-15 14:21:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-15 14:21:44,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-10-15 14:21:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-10-15 14:21:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-10-15 14:21:44,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-10-15 14:21:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,686 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-10-15 14:21:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-10-15 14:21:44,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-10-15 14:21:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-10-15 14:21:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-10-15 14:21:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-10-15 14:21:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-10-15 14:21:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-10-15 14:21:44,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-10-15 14:21:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-10-15 14:21:44,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-10-15 14:21:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-10-15 14:21:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-10-15 14:21:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-10-15 14:21:44,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-10-15 14:21:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-10-15 14:21:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-10-15 14:21:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-10-15 14:21:44,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-10-15 14:21:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-10-15 14:21:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-10-15 14:21:44,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2024-10-15 14:21:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-10-15 14:21:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2024-10-15 14:21:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-10-15 14:21:44,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2024-10-15 14:21:44,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-10-15 14:21:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2024-10-15 14:21:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-10-15 14:21:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,712 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2754 proven. 1073 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-10-15 14:21:44,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:21:44,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895200725] [2024-10-15 14:21:44,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895200725] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:21:44,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580815463] [2024-10-15 14:21:44,712 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 14:21:44,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:21:44,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:21:44,714 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) [2024-10-15 14:21:44,715 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2024-10-15 14:21:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:44,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-10-15 14:21:44,838 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:21:47,548 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2881 proven. 946 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-10-15 14:21:47,548 INFO L311 TraceCheckSpWp]: Computing backward predicates...