./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 f1d7dc9d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-invgen/up.i -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ff5c10c83c8d29dcc2c2798035fa2754df224d2313ad9c91b6ee5bb6ca3d9a9f --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-f1d7dc9-m [2024-09-20 12:02:23,016 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 12:02:23,081 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 12:02:23,086 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 12:02:23,088 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 12:02:23,111 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 12:02:23,111 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 12:02:23,112 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 12:02:23,112 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 12:02:23,113 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 12:02:23,114 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 12:02:23,114 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 12:02:23,114 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 12:02:23,115 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 12:02:23,115 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 12:02:23,116 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 12:02:23,117 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 12:02:23,117 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 12:02:23,117 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 12:02:23,117 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 12:02:23,117 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 12:02:23,120 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 12:02:23,120 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 12:02:23,120 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 12:02:23,120 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 12:02:23,120 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 12:02:23,121 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 12:02:23,121 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 12:02:23,121 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 12:02:23,121 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 12:02:23,121 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 12:02:23,121 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 12:02:23,121 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 12:02:23,122 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 12:02:23,122 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 12:02:23,122 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 12:02:23,122 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 12:02:23,122 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 12:02:23,122 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 12:02:23,123 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 12:02:23,123 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 12:02:23,124 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 12:02:23,124 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff5c10c83c8d29dcc2c2798035fa2754df224d2313ad9c91b6ee5bb6ca3d9a9f Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-20 12:02:23,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 12:02:23,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 12:02:23,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 12:02:23,385 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 12:02:23,385 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 12:02:23,386 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-invgen/up.i [2024-09-20 12:02:24,798 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 12:02:24,989 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 12:02:24,990 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/up.i [2024-09-20 12:02:25,000 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/7b1aec58b/b456eea549fe4ff582f5655afc8a98eb/FLAGa1b613fac [2024-09-20 12:02:25,377 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/7b1aec58b/b456eea549fe4ff582f5655afc8a98eb [2024-09-20 12:02:25,379 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 12:02:25,380 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-20 12:02:25,381 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 12:02:25,381 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 12:02:25,390 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 12:02:25,391 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:02:25" (1/1) ... [2024-09-20 12:02:25,392 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75c33c6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:02:25, skipping insertion in model container [2024-09-20 12:02:25,392 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:02:25" (1/1) ... [2024-09-20 12:02:25,406 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 12:02:25,567 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/up.i[893,906] [2024-09-20 12:02:25,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 12:02:25,596 INFO L200 MainTranslator]: Completed pre-run [2024-09-20 12:02:25,605 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/up.i[893,906] [2024-09-20 12:02:25,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 12:02:25,637 INFO L204 MainTranslator]: Completed translation [2024-09-20 12:02:25,637 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:02:25 WrapperNode [2024-09-20 12:02:25,637 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 12:02:25,638 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 12:02:25,638 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 12:02:25,638 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 12:02:25,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:02:25" (1/1) ... [2024-09-20 12:02:25,652 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:02:25" (1/1) ... [2024-09-20 12:02:25,657 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-20 12:02:25,657 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 12:02:25,658 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 12:02:25,658 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 12:02:25,658 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 12:02:25,667 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:02:25" (1/1) ... [2024-09-20 12:02:25,667 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:02:25" (1/1) ... [2024-09-20 12:02:25,668 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:02:25" (1/1) ... [2024-09-20 12:02:25,676 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-20 12:02:25,677 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:02:25" (1/1) ... [2024-09-20 12:02:25,677 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:02:25" (1/1) ... [2024-09-20 12:02:25,679 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:02:25" (1/1) ... [2024-09-20 12:02:25,681 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:02:25" (1/1) ... [2024-09-20 12:02:25,686 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:02:25" (1/1) ... [2024-09-20 12:02:25,687 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:02:25" (1/1) ... [2024-09-20 12:02:25,687 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 12:02:25,688 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 12:02:25,688 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 12:02:25,688 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 12:02:25,689 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:02:25" (1/1) ... [2024-09-20 12:02:25,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 12:02:25,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:02:25,721 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-20 12:02:25,740 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-20 12:02:25,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 12:02:25,800 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-20 12:02:25,800 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-20 12:02:25,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-20 12:02:25,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-20 12:02:25,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-20 12:02:25,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 12:02:25,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 12:02:25,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-20 12:02:25,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-20 12:02:25,886 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 12:02:25,892 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 12:02:26,005 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-09-20 12:02:26,005 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 12:02:26,021 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 12:02:26,022 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-20 12:02:26,022 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:02:26 BoogieIcfgContainer [2024-09-20 12:02:26,022 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 12:02:26,026 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 12:02:26,026 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 12:02:26,028 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 12:02:26,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 12:02:25" (1/3) ... [2024-09-20 12:02:26,029 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@472e55ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:02:26, skipping insertion in model container [2024-09-20 12:02:26,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:02:25" (2/3) ... [2024-09-20 12:02:26,029 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@472e55ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:02:26, skipping insertion in model container [2024-09-20 12:02:26,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:02:26" (3/3) ... [2024-09-20 12:02:26,030 INFO L112 eAbstractionObserver]: Analyzing ICFG up.i [2024-09-20 12:02:26,042 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 12:02:26,043 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-20 12:02:26,084 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 12:02:26,089 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@469f32a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 12:02:26,090 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-20 12:02:26,092 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-20 12:02:26,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-20 12:02:26,097 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:26,098 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:26,098 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:26,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:26,102 INFO L85 PathProgramCache]: Analyzing trace with hash -2044494321, now seen corresponding path program 1 times [2024-09-20 12:02:26,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:26,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586622450] [2024-09-20 12:02:26,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:26,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:26,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:26,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 12:02:26,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:26,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586622450] [2024-09-20 12:02:26,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586622450] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 12:02:26,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 12:02:26,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-20 12:02:26,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300684658] [2024-09-20 12:02:26,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 12:02:26,246 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-20 12:02:26,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:02:26,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-20 12:02:26,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 12:02:26,265 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-20 12:02:26,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:02:26,280 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2024-09-20 12:02:26,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-20 12:02:26,282 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-09-20 12:02:26,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:02:26,287 INFO L225 Difference]: With dead ends: 34 [2024-09-20 12:02:26,287 INFO L226 Difference]: Without dead ends: 16 [2024-09-20 12:02:26,289 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 12:02:26,291 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 12:02:26,293 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 12:02:26,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-09-20 12:02:26,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-09-20 12:02:26,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 12:02:26,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2024-09-20 12:02:26,318 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2024-09-20 12:02:26,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:02:26,319 INFO L474 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2024-09-20 12:02:26,319 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-20 12:02:26,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:26,320 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2024-09-20 12:02:26,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-20 12:02:26,320 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:26,320 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:26,320 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-20 12:02:26,321 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:26,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:26,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1299541749, now seen corresponding path program 1 times [2024-09-20 12:02:26,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:26,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294915378] [2024-09-20 12:02:26,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:26,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:26,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:26,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 12:02:26,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:26,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294915378] [2024-09-20 12:02:26,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294915378] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 12:02:26,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 12:02:26,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 12:02:26,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904479354] [2024-09-20 12:02:26,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 12:02:26,428 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 12:02:26,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:02:26,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 12:02:26,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-20 12:02:26,430 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-20 12:02:26,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:02:26,457 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2024-09-20 12:02:26,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 12:02:26,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-09-20 12:02:26,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:02:26,464 INFO L225 Difference]: With dead ends: 28 [2024-09-20 12:02:26,465 INFO L226 Difference]: Without dead ends: 17 [2024-09-20 12:02:26,465 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-20 12:02:26,466 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 12:02:26,468 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 12:02:26,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-09-20 12:02:26,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-09-20 12:02:26,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 12:02:26,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2024-09-20 12:02:26,474 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 12 [2024-09-20 12:02:26,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:02:26,474 INFO L474 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-09-20 12:02:26,474 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-20 12:02:26,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:26,476 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2024-09-20 12:02:26,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-20 12:02:26,476 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:26,476 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:26,477 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-20 12:02:26,477 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:26,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:26,478 INFO L85 PathProgramCache]: Analyzing trace with hash 546941463, now seen corresponding path program 1 times [2024-09-20 12:02:26,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:26,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448315201] [2024-09-20 12:02:26,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:26,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:26,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:26,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:26,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 12:02:26,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:26,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448315201] [2024-09-20 12:02:26,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448315201] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:02:26,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141789726] [2024-09-20 12:02:26,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:26,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:26,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:02:26,578 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:02:26,579 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-20 12:02:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:26,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-20 12:02:26,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:02:26,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 12:02:26,726 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 12:02:26,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141789726] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 12:02:26,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-20 12:02:26,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2024-09-20 12:02:26,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706181344] [2024-09-20 12:02:26,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 12:02:26,728 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-20 12:02:26,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:02:26,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-20 12:02:26,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-09-20 12:02:26,728 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-20 12:02:26,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:02:26,781 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2024-09-20 12:02:26,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-20 12:02:26,781 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-09-20 12:02:26,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:02:26,783 INFO L225 Difference]: With dead ends: 29 [2024-09-20 12:02:26,783 INFO L226 Difference]: Without dead ends: 27 [2024-09-20 12:02:26,783 INFO L433 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 [2024-09-20 12:02:26,784 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 12:02:26,786 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 42 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 12:02:26,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-20 12:02:26,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2024-09-20 12:02:26,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-20 12:02:26,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2024-09-20 12:02:26,795 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 13 [2024-09-20 12:02:26,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:02:26,795 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2024-09-20 12:02:26,795 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-20 12:02:26,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:26,796 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2024-09-20 12:02:26,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-20 12:02:26,797 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:26,797 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:26,811 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-20 12:02:26,998 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:26,999 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:26,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:27,000 INFO L85 PathProgramCache]: Analyzing trace with hash 51481388, now seen corresponding path program 1 times [2024-09-20 12:02:27,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:27,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571980683] [2024-09-20 12:02:27,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:27,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:27,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:27,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:27,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-09-20 12:02:27,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:27,087 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 12:02:27,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:27,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571980683] [2024-09-20 12:02:27,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571980683] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:02:27,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865642758] [2024-09-20 12:02:27,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:27,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:27,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:02:27,090 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:02:27,091 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-20 12:02:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:27,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-20 12:02:27,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:02:27,187 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 12:02:27,187 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:02:27,228 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 12:02:27,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865642758] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:02:27,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:02:27,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-09-20 12:02:27,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815131] [2024-09-20 12:02:27,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:02:27,229 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-20 12:02:27,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:02:27,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-20 12:02:27,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-09-20 12:02:27,233 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-20 12:02:27,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:02:27,263 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2024-09-20 12:02:27,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-20 12:02:27,264 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 20 [2024-09-20 12:02:27,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:02:27,265 INFO L225 Difference]: With dead ends: 38 [2024-09-20 12:02:27,266 INFO L226 Difference]: Without dead ends: 24 [2024-09-20 12:02:27,266 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-09-20 12:02:27,267 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 12:02:27,267 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 12:02:27,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-20 12:02:27,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-09-20 12:02:27,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-20 12:02:27,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-09-20 12:02:27,271 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 20 [2024-09-20 12:02:27,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:02:27,271 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-09-20 12:02:27,271 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-20 12:02:27,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:27,272 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2024-09-20 12:02:27,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-20 12:02:27,272 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:27,272 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:27,284 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-20 12:02:27,476 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:27,477 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:27,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:27,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1809000392, now seen corresponding path program 2 times [2024-09-20 12:02:27,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:27,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058499254] [2024-09-20 12:02:27,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:27,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:27,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:27,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 12:02:27,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:27,569 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 12:02:27,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:27,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058499254] [2024-09-20 12:02:27,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058499254] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:02:27,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154194049] [2024-09-20 12:02:27,569 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 12:02:27,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:27,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:02:27,571 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:02:27,572 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-20 12:02:27,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 12:02:27,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:02:27,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-20 12:02:27,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:02:27,637 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 12:02:27,637 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:02:27,682 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 12:02:27,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154194049] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:02:27,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:02:27,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-09-20 12:02:27,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595813274] [2024-09-20 12:02:27,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:02:27,683 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-20 12:02:27,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:02:27,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-20 12:02:27,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-20 12:02:27,684 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 12:02:27,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:02:27,717 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2024-09-20 12:02:27,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-20 12:02:27,718 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2024-09-20 12:02:27,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:02:27,718 INFO L225 Difference]: With dead ends: 37 [2024-09-20 12:02:27,719 INFO L226 Difference]: Without dead ends: 35 [2024-09-20 12:02:27,719 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-09-20 12:02:27,719 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 12:02:27,720 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 53 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 12:02:27,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-20 12:02:27,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2024-09-20 12:02:27,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-20 12:02:27,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2024-09-20 12:02:27,724 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 21 [2024-09-20 12:02:27,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:02:27,725 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2024-09-20 12:02:27,725 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 12:02:27,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:27,725 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2024-09-20 12:02:27,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-20 12:02:27,726 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:27,726 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:27,738 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-20 12:02:27,930 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:27,931 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:27,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:27,931 INFO L85 PathProgramCache]: Analyzing trace with hash -835361301, now seen corresponding path program 3 times [2024-09-20 12:02:27,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:27,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730245204] [2024-09-20 12:02:27,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:27,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:28,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:28,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-20 12:02:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:28,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-20 12:02:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:28,052 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 12:02:28,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:28,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730245204] [2024-09-20 12:02:28,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730245204] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:02:28,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925372503] [2024-09-20 12:02:28,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 12:02:28,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:28,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:02:28,060 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:02:28,063 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-20 12:02:28,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-20 12:02:28,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:02:28,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-20 12:02:28,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:02:28,154 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 12:02:28,154 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:02:28,203 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 12:02:28,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925372503] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:02:28,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:02:28,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-09-20 12:02:28,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873783472] [2024-09-20 12:02:28,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:02:28,204 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-20 12:02:28,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:02:28,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-20 12:02:28,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-09-20 12:02:28,205 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 12:02:28,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:02:28,249 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2024-09-20 12:02:28,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-20 12:02:28,250 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 28 [2024-09-20 12:02:28,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:02:28,250 INFO L225 Difference]: With dead ends: 49 [2024-09-20 12:02:28,250 INFO L226 Difference]: Without dead ends: 32 [2024-09-20 12:02:28,251 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-09-20 12:02:28,251 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 12:02:28,252 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 97 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 12:02:28,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-20 12:02:28,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-09-20 12:02:28,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-20 12:02:28,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2024-09-20 12:02:28,255 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 28 [2024-09-20 12:02:28,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:02:28,256 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2024-09-20 12:02:28,256 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 12:02:28,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:28,256 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2024-09-20 12:02:28,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-20 12:02:28,257 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:28,257 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:28,269 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-20 12:02:28,457 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:28,458 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:28,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:28,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1662458121, now seen corresponding path program 4 times [2024-09-20 12:02:28,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:28,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926583769] [2024-09-20 12:02:28,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:28,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:28,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:28,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-20 12:02:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:28,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-20 12:02:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:28,531 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 12:02:28,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:28,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926583769] [2024-09-20 12:02:28,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926583769] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:02:28,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734206813] [2024-09-20 12:02:28,531 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 12:02:28,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:28,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:02:28,536 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:02:28,540 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-20 12:02:28,574 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 12:02:28,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:02:28,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-20 12:02:28,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:02:28,612 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 12:02:28,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:02:28,677 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 12:02:28,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734206813] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:02:28,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:02:28,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2024-09-20 12:02:28,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950228830] [2024-09-20 12:02:28,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:02:28,678 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-20 12:02:28,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:02:28,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-20 12:02:28,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-09-20 12:02:28,679 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-20 12:02:28,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:02:28,718 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2024-09-20 12:02:28,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-20 12:02:28,718 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2024-09-20 12:02:28,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:02:28,719 INFO L225 Difference]: With dead ends: 45 [2024-09-20 12:02:28,719 INFO L226 Difference]: Without dead ends: 43 [2024-09-20 12:02:28,720 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-09-20 12:02:28,720 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 12:02:28,720 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 65 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 12:02:28,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-20 12:02:28,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2024-09-20 12:02:28,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 12:02:28,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2024-09-20 12:02:28,725 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 29 [2024-09-20 12:02:28,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:02:28,725 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2024-09-20 12:02:28,725 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-20 12:02:28,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:28,725 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2024-09-20 12:02:28,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-09-20 12:02:28,726 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:28,726 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:28,738 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-20 12:02:28,926 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-20 12:02:28,927 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:28,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:28,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1955720628, now seen corresponding path program 5 times [2024-09-20 12:02:28,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:28,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656486905] [2024-09-20 12:02:28,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:28,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:28,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:29,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:29,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-20 12:02:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:29,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-20 12:02:29,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:29,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-20 12:02:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:29,015 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 12:02:29,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:29,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656486905] [2024-09-20 12:02:29,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656486905] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:02:29,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902938841] [2024-09-20 12:02:29,016 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 12:02:29,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:29,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:02:29,017 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:02:29,019 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-20 12:02:29,055 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-09-20 12:02:29,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:02:29,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-20 12:02:29,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:02:29,144 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 12:02:29,144 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:02:29,207 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 12:02:29,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902938841] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:02:29,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:02:29,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-09-20 12:02:29,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401450391] [2024-09-20 12:02:29,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:02:29,208 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-20 12:02:29,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:02:29,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-20 12:02:29,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-09-20 12:02:29,209 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 12:02:29,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:02:29,258 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2024-09-20 12:02:29,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-20 12:02:29,258 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 36 [2024-09-20 12:02:29,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:02:29,259 INFO L225 Difference]: With dead ends: 60 [2024-09-20 12:02:29,259 INFO L226 Difference]: Without dead ends: 40 [2024-09-20 12:02:29,259 INFO L433 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 [2024-09-20 12:02:29,260 INFO L434 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, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 12:02:29,260 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 98 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 12:02:29,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-20 12:02:29,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-09-20 12:02:29,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 29 states have internal predecessors, (30), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 12:02:29,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2024-09-20 12:02:29,265 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 36 [2024-09-20 12:02:29,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:02:29,265 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2024-09-20 12:02:29,265 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 12:02:29,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:29,265 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2024-09-20 12:02:29,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-20 12:02:29,266 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:29,266 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:29,281 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-20 12:02:29,466 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:29,467 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:29,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:29,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1715849048, now seen corresponding path program 6 times [2024-09-20 12:02:29,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:29,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494641634] [2024-09-20 12:02:29,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:29,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:29,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:29,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-20 12:02:29,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:29,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-20 12:02:29,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:29,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-20 12:02:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:29,599 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 12:02:29,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:29,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494641634] [2024-09-20 12:02:29,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494641634] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:02:29,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323725251] [2024-09-20 12:02:29,600 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 12:02:29,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:29,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:02:29,604 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:02:29,605 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-20 12:02:29,636 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-09-20 12:02:29,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:02:29,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-20 12:02:29,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:02:29,675 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 12:02:29,675 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:02:29,728 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 12:02:29,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323725251] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:02:29,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:02:29,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-09-20 12:02:29,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224249867] [2024-09-20 12:02:29,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:02:29,730 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-20 12:02:29,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:02:29,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-20 12:02:29,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-09-20 12:02:29,730 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-20 12:02:29,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:02:29,779 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2024-09-20 12:02:29,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-20 12:02:29,780 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 37 [2024-09-20 12:02:29,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:02:29,780 INFO L225 Difference]: With dead ends: 53 [2024-09-20 12:02:29,780 INFO L226 Difference]: Without dead ends: 51 [2024-09-20 12:02:29,781 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 75 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-09-20 12:02:29,781 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 12:02:29,781 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 58 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 12:02:29,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-09-20 12:02:29,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2024-09-20 12:02:29,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 34 states have internal predecessors, (35), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 12:02:29,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2024-09-20 12:02:29,794 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 37 [2024-09-20 12:02:29,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:02:29,794 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2024-09-20 12:02:29,794 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-20 12:02:29,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:29,794 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2024-09-20 12:02:29,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-20 12:02:29,795 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:29,795 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:29,818 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-20 12:02:29,995 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:29,996 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:29,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:29,997 INFO L85 PathProgramCache]: Analyzing trace with hash 640103115, now seen corresponding path program 7 times [2024-09-20 12:02:29,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:29,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129378943] [2024-09-20 12:02:29,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:29,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:30,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:30,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:30,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-20 12:02:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:30,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-20 12:02:30,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:30,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-20 12:02:30,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:30,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-20 12:02:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:30,158 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 24 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 12:02:30,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:30,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129378943] [2024-09-20 12:02:30,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129378943] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:02:30,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084401203] [2024-09-20 12:02:30,158 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 12:02:30,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:30,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:02:30,160 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:02:30,161 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-20 12:02:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:30,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-20 12:02:30,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:02:30,294 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 12:02:30,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:02:30,375 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 12:02:30,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084401203] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:02:30,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:02:30,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-09-20 12:02:30,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944026112] [2024-09-20 12:02:30,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:02:30,376 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-20 12:02:30,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:02:30,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-20 12:02:30,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2024-09-20 12:02:30,377 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-20 12:02:30,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:02:30,426 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2024-09-20 12:02:30,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-20 12:02:30,426 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 44 [2024-09-20 12:02:30,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:02:30,427 INFO L225 Difference]: With dead ends: 71 [2024-09-20 12:02:30,427 INFO L226 Difference]: Without dead ends: 48 [2024-09-20 12:02:30,427 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 83 SyntacticMatches, 9 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2024-09-20 12:02:30,428 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 12:02:30,428 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 109 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 12:02:30,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-20 12:02:30,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-09-20 12:02:30,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 35 states have internal predecessors, (36), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 12:02:30,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2024-09-20 12:02:30,433 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 44 [2024-09-20 12:02:30,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:02:30,433 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2024-09-20 12:02:30,433 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-20 12:02:30,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:30,433 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2024-09-20 12:02:30,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-09-20 12:02:30,434 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:30,434 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:30,446 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-20 12:02:30,634 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:30,635 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:30,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:30,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1884349481, now seen corresponding path program 8 times [2024-09-20 12:02:30,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:30,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269234481] [2024-09-20 12:02:30,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:30,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:30,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:30,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:30,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-20 12:02:30,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:30,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-20 12:02:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:30,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 12:02:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:30,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 12:02:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:30,766 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 18 proven. 31 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 12:02:30,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:30,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269234481] [2024-09-20 12:02:30,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269234481] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:02:30,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485537566] [2024-09-20 12:02:30,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 12:02:30,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:30,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:02:30,768 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:02:30,769 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-20 12:02:30,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 12:02:30,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:02:30,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-20 12:02:30,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:02:30,845 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 12:02:30,845 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:02:30,925 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 12:02:30,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485537566] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:02:30,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:02:30,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 13 [2024-09-20 12:02:30,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840044322] [2024-09-20 12:02:30,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:02:30,926 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-20 12:02:30,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:02:30,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-20 12:02:30,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-09-20 12:02:30,927 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 12:02:30,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:02:30,973 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2024-09-20 12:02:30,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-20 12:02:30,974 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 45 [2024-09-20 12:02:30,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:02:30,974 INFO L225 Difference]: With dead ends: 61 [2024-09-20 12:02:30,975 INFO L226 Difference]: Without dead ends: 59 [2024-09-20 12:02:30,975 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 90 SyntacticMatches, 12 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-09-20 12:02:30,975 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 12:02:30,975 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 81 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 12:02:30,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-09-20 12:02:30,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2024-09-20 12:02:30,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 40 states have internal predecessors, (41), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-20 12:02:30,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2024-09-20 12:02:30,980 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 45 [2024-09-20 12:02:30,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:02:30,980 INFO L474 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2024-09-20 12:02:30,980 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 12:02:30,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:30,981 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2024-09-20 12:02:30,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-09-20 12:02:30,981 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:30,981 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:30,993 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-20 12:02:31,185 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-20 12:02:31,186 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:31,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:31,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1341349524, now seen corresponding path program 9 times [2024-09-20 12:02:31,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:31,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279896940] [2024-09-20 12:02:31,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:31,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:31,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:31,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:31,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-20 12:02:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:31,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-20 12:02:31,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:31,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 12:02:31,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:31,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 12:02:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:31,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 12:02:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:31,329 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 37 proven. 28 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-20 12:02:31,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:31,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279896940] [2024-09-20 12:02:31,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279896940] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:02:31,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698938342] [2024-09-20 12:02:31,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 12:02:31,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:31,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:02:31,331 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:02:31,332 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-20 12:02:31,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-20 12:02:31,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:02:31,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-09-20 12:02:31,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:02:31,509 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-20 12:02:31,509 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:02:31,614 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-20 12:02:31,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698938342] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:02:31,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:02:31,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-09-20 12:02:31,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901797373] [2024-09-20 12:02:31,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:02:31,614 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-20 12:02:31,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:02:31,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-20 12:02:31,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2024-09-20 12:02:31,615 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-20 12:02:31,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:02:31,673 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2024-09-20 12:02:31,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-20 12:02:31,673 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 52 [2024-09-20 12:02:31,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:02:31,674 INFO L225 Difference]: With dead ends: 82 [2024-09-20 12:02:31,674 INFO L226 Difference]: Without dead ends: 56 [2024-09-20 12:02:31,675 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 98 SyntacticMatches, 11 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2024-09-20 12:02:31,675 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 12:02:31,675 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 134 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 12:02:31,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-09-20 12:02:31,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-09-20 12:02:31,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.05) internal successors, (42), 41 states have internal predecessors, (42), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-20 12:02:31,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2024-09-20 12:02:31,684 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 52 [2024-09-20 12:02:31,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:02:31,684 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2024-09-20 12:02:31,684 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-20 12:02:31,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:31,685 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2024-09-20 12:02:31,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-09-20 12:02:31,685 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:31,685 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:31,702 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-20 12:02:31,886 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-20 12:02:31,886 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:31,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:31,887 INFO L85 PathProgramCache]: Analyzing trace with hash -556745096, now seen corresponding path program 10 times [2024-09-20 12:02:31,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:31,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496760308] [2024-09-20 12:02:31,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:31,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:31,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:31,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:31,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-20 12:02:31,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:31,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-20 12:02:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:31,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-20 12:02:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:31,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-20 12:02:32,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:32,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 12:02:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:32,003 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 25 proven. 46 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-20 12:02:32,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:32,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496760308] [2024-09-20 12:02:32,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496760308] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:02:32,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52359248] [2024-09-20 12:02:32,004 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 12:02:32,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:32,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:02:32,009 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:02:32,011 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-20 12:02:32,045 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 12:02:32,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:02:32,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-20 12:02:32,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:02:32,090 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-20 12:02:32,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:02:32,170 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-09-20 12:02:32,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52359248] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:02:32,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:02:32,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 14 [2024-09-20 12:02:32,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063415201] [2024-09-20 12:02:32,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:02:32,173 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-20 12:02:32,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:02:32,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-20 12:02:32,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-09-20 12:02:32,175 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 12:02:32,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:02:32,223 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2024-09-20 12:02:32,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-20 12:02:32,224 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 53 [2024-09-20 12:02:32,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:02:32,224 INFO L225 Difference]: With dead ends: 69 [2024-09-20 12:02:32,224 INFO L226 Difference]: Without dead ends: 67 [2024-09-20 12:02:32,225 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 109 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-09-20 12:02:32,226 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 12:02:32,226 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 64 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 12:02:32,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-09-20 12:02:32,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2024-09-20 12:02:32,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 46 states have internal predecessors, (47), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 12:02:32,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2024-09-20 12:02:32,238 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 53 [2024-09-20 12:02:32,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:02:32,238 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2024-09-20 12:02:32,238 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 12:02:32,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:32,238 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2024-09-20 12:02:32,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-20 12:02:32,239 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:32,239 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:32,252 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-20 12:02:32,439 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:32,440 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:32,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:32,440 INFO L85 PathProgramCache]: Analyzing trace with hash 483260331, now seen corresponding path program 11 times [2024-09-20 12:02:32,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:32,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209789668] [2024-09-20 12:02:32,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:32,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:32,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:32,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-20 12:02:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:32,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-20 12:02:32,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:32,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-20 12:02:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:32,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-20 12:02:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:32,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 12:02:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:32,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 12:02:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:32,621 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 53 proven. 37 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-20 12:02:32,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:32,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209789668] [2024-09-20 12:02:32,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209789668] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:02:32,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160070783] [2024-09-20 12:02:32,622 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 12:02:32,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:32,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:02:32,626 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:02:32,630 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-20 12:02:32,668 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-09-20 12:02:32,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:02:32,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-20 12:02:32,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:02:32,822 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-20 12:02:32,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:02:32,944 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-20 12:02:32,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160070783] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:02:32,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:02:32,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-09-20 12:02:32,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788349659] [2024-09-20 12:02:32,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:02:32,946 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-20 12:02:32,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:02:32,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-20 12:02:32,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2024-09-20 12:02:32,947 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 26 states have internal predecessors, (48), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-20 12:02:33,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:02:33,027 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2024-09-20 12:02:33,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-20 12:02:33,028 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 26 states have internal predecessors, (48), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 60 [2024-09-20 12:02:33,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:02:33,029 INFO L225 Difference]: With dead ends: 93 [2024-09-20 12:02:33,029 INFO L226 Difference]: Without dead ends: 64 [2024-09-20 12:02:33,029 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 113 SyntacticMatches, 13 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2024-09-20 12:02:33,030 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:02:33,030 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 153 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:02:33,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-09-20 12:02:33,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-09-20 12:02:33,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 47 states have internal predecessors, (48), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 12:02:33,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2024-09-20 12:02:33,038 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 60 [2024-09-20 12:02:33,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:02:33,038 INFO L474 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2024-09-20 12:02:33,038 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 26 states have internal predecessors, (48), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-20 12:02:33,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:33,039 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2024-09-20 12:02:33,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-09-20 12:02:33,042 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:33,042 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:33,058 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-20 12:02:33,243 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-20 12:02:33,243 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:33,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:33,244 INFO L85 PathProgramCache]: Analyzing trace with hash -77969225, now seen corresponding path program 12 times [2024-09-20 12:02:33,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:33,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725405961] [2024-09-20 12:02:33,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:33,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:33,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:33,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-20 12:02:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:33,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-20 12:02:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:33,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 12:02:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:33,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 12:02:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:33,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 12:02:33,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:33,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 12:02:33,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:33,411 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 33 proven. 64 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-20 12:02:33,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:33,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725405961] [2024-09-20 12:02:33,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725405961] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:02:33,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523456260] [2024-09-20 12:02:33,412 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 12:02:33,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:33,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:02:33,416 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:02:33,417 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-20 12:02:33,463 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-20 12:02:33,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:02:33,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-20 12:02:33,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:02:33,525 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-20 12:02:33,525 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:02:33,644 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-20 12:02:33,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523456260] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:02:33,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:02:33,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 15 [2024-09-20 12:02:33,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343419606] [2024-09-20 12:02:33,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:02:33,645 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-20 12:02:33,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:02:33,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-20 12:02:33,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-09-20 12:02:33,646 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 13 states have internal predecessors, (34), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-20 12:02:33,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:02:33,719 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2024-09-20 12:02:33,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-20 12:02:33,719 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 13 states have internal predecessors, (34), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 61 [2024-09-20 12:02:33,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:02:33,720 INFO L225 Difference]: With dead ends: 77 [2024-09-20 12:02:33,720 INFO L226 Difference]: Without dead ends: 75 [2024-09-20 12:02:33,721 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 126 SyntacticMatches, 14 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2024-09-20 12:02:33,721 INFO L434 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 [2024-09-20 12:02:33,721 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 100 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:02:33,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-09-20 12:02:33,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2024-09-20 12:02:33,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 52 states have internal predecessors, (53), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-20 12:02:33,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2024-09-20 12:02:33,726 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 61 [2024-09-20 12:02:33,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:02:33,726 INFO L474 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2024-09-20 12:02:33,726 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 13 states have internal predecessors, (34), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-20 12:02:33,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:33,727 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2024-09-20 12:02:33,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-20 12:02:33,727 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:33,727 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:33,741 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-09-20 12:02:33,931 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-20 12:02:33,932 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:33,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:33,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1992243340, now seen corresponding path program 13 times [2024-09-20 12:02:33,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:33,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179726218] [2024-09-20 12:02:33,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:33,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:33,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:34,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:34,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:34,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-20 12:02:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:34,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-20 12:02:34,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:34,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 12:02:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:34,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 12:02:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:34,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 12:02:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:34,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 12:02:34,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:34,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 12:02:34,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:34,131 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 72 proven. 47 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-20 12:02:34,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:34,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179726218] [2024-09-20 12:02:34,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179726218] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:02:34,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572340679] [2024-09-20 12:02:34,132 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 12:02:34,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:34,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:02:34,133 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:02:34,135 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-20 12:02:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:34,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-20 12:02:34,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:02:34,368 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-20 12:02:34,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:02:34,515 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-20 12:02:34,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572340679] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:02:34,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:02:34,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-09-20 12:02:34,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954050330] [2024-09-20 12:02:34,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:02:34,516 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-20 12:02:34,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:02:34,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-20 12:02:34,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2024-09-20 12:02:34,517 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 29 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 29 states have internal predecessors, (53), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-20 12:02:34,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:02:34,597 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2024-09-20 12:02:34,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-20 12:02:34,597 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 29 states have internal predecessors, (53), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 68 [2024-09-20 12:02:34,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:02:34,598 INFO L225 Difference]: With dead ends: 104 [2024-09-20 12:02:34,598 INFO L226 Difference]: Without dead ends: 72 [2024-09-20 12:02:34,599 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 128 SyntacticMatches, 15 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2024-09-20 12:02:34,599 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:02:34,599 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 210 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:02:34,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-09-20 12:02:34,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-09-20 12:02:34,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 53 states have internal predecessors, (54), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-20 12:02:34,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2024-09-20 12:02:34,604 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 68 [2024-09-20 12:02:34,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:02:34,604 INFO L474 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2024-09-20 12:02:34,604 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 29 states have internal predecessors, (53), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-20 12:02:34,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:34,605 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2024-09-20 12:02:34,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-09-20 12:02:34,605 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:34,605 INFO L216 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:34,618 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-09-20 12:02:34,806 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-20 12:02:34,807 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:34,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:34,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1549812328, now seen corresponding path program 14 times [2024-09-20 12:02:34,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:34,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192916767] [2024-09-20 12:02:34,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:34,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:34,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:34,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:34,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 12:02:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:34,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 12:02:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:34,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-20 12:02:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:34,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 12:02:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:34,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-20 12:02:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:34,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 12:02:34,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:34,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-20 12:02:34,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:34,953 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 42 proven. 85 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-20 12:02:34,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:34,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192916767] [2024-09-20 12:02:34,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192916767] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:02:34,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572434533] [2024-09-20 12:02:34,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 12:02:34,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:34,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:02:34,955 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:02:34,956 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-20 12:02:34,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 12:02:34,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:02:34,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-20 12:02:34,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:02:35,061 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-20 12:02:35,065 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:02:35,222 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-20 12:02:35,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572434533] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:02:35,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:02:35,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 16 [2024-09-20 12:02:35,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769895316] [2024-09-20 12:02:35,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:02:35,223 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-20 12:02:35,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:02:35,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-20 12:02:35,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-09-20 12:02:35,225 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 12:02:35,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:02:35,287 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2024-09-20 12:02:35,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-20 12:02:35,288 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 69 [2024-09-20 12:02:35,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:02:35,289 INFO L225 Difference]: With dead ends: 85 [2024-09-20 12:02:35,290 INFO L226 Difference]: Without dead ends: 83 [2024-09-20 12:02:35,290 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 141 SyntacticMatches, 18 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2024-09-20 12:02:35,290 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:02:35,290 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 80 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:02:35,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-09-20 12:02:35,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2024-09-20 12:02:35,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 58 states have internal predecessors, (59), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-20 12:02:35,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2024-09-20 12:02:35,295 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 69 [2024-09-20 12:02:35,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:02:35,295 INFO L474 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2024-09-20 12:02:35,295 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 12:02:35,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:35,296 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2024-09-20 12:02:35,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-09-20 12:02:35,296 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:35,296 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:35,308 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-09-20 12:02:35,496 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-20 12:02:35,497 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:35,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:35,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1008186507, now seen corresponding path program 15 times [2024-09-20 12:02:35,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:35,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602154612] [2024-09-20 12:02:35,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:35,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:35,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:35,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:35,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-20 12:02:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:35,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 12:02:35,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:35,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-20 12:02:35,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:35,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 12:02:35,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:35,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-20 12:02:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:35,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 12:02:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:35,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-20 12:02:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:35,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 12:02:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:35,704 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 94 proven. 58 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-20 12:02:35,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:35,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602154612] [2024-09-20 12:02:35,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602154612] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:02:35,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787541771] [2024-09-20 12:02:35,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 12:02:35,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:35,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:02:35,706 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:02:35,711 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-20 12:02:35,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-09-20 12:02:35,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:02:35,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-20 12:02:35,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:02:35,951 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-20 12:02:35,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:02:36,131 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-20 12:02:36,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787541771] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:02:36,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:02:36,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2024-09-20 12:02:36,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666210656] [2024-09-20 12:02:36,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:02:36,131 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-20 12:02:36,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:02:36,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-20 12:02:36,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2024-09-20 12:02:36,133 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand has 32 states, 32 states have (on average 1.8125) internal successors, (58), 32 states have internal predecessors, (58), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-20 12:02:36,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:02:36,217 INFO L93 Difference]: Finished difference Result 115 states and 125 transitions. [2024-09-20 12:02:36,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-20 12:02:36,218 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.8125) internal successors, (58), 32 states have internal predecessors, (58), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 76 [2024-09-20 12:02:36,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:02:36,219 INFO L225 Difference]: With dead ends: 115 [2024-09-20 12:02:36,219 INFO L226 Difference]: Without dead ends: 80 [2024-09-20 12:02:36,219 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 143 SyntacticMatches, 17 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2024-09-20 12:02:36,220 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:02:36,220 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 160 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:02:36,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-09-20 12:02:36,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-09-20 12:02:36,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 59 states have internal predecessors, (60), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-20 12:02:36,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2024-09-20 12:02:36,225 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 76 [2024-09-20 12:02:36,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:02:36,225 INFO L474 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2024-09-20 12:02:36,225 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.8125) internal successors, (58), 32 states have internal predecessors, (58), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-20 12:02:36,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:36,225 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2024-09-20 12:02:36,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-09-20 12:02:36,226 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:36,226 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:36,238 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-09-20 12:02:36,426 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:36,427 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:36,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:36,427 INFO L85 PathProgramCache]: Analyzing trace with hash 165178775, now seen corresponding path program 16 times [2024-09-20 12:02:36,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:36,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019782392] [2024-09-20 12:02:36,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:36,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:36,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:36,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-20 12:02:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:36,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-20 12:02:36,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:36,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-20 12:02:36,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:36,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 12:02:36,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:36,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 12:02:36,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:36,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-20 12:02:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:36,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 12:02:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:36,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-20 12:02:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:36,657 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 52 proven. 109 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-20 12:02:36,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:36,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019782392] [2024-09-20 12:02:36,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019782392] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:02:36,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37301342] [2024-09-20 12:02:36,658 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 12:02:36,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:36,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:02:36,659 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:02:36,660 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-20 12:02:36,704 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 12:02:36,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:02:36,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-20 12:02:36,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:02:36,785 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 61 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-20 12:02:36,785 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:02:36,942 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 61 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-20 12:02:36,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37301342] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:02:36,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:02:36,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 17 [2024-09-20 12:02:36,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244430265] [2024-09-20 12:02:36,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:02:36,946 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-20 12:02:36,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:02:36,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-20 12:02:36,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2024-09-20 12:02:36,947 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-20 12:02:37,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:02:37,010 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2024-09-20 12:02:37,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-20 12:02:37,010 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 77 [2024-09-20 12:02:37,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:02:37,011 INFO L225 Difference]: With dead ends: 93 [2024-09-20 12:02:37,011 INFO L226 Difference]: Without dead ends: 91 [2024-09-20 12:02:37,011 INFO L433 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 [2024-09-20 12:02:37,012 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:02:37,012 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 67 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:02:37,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-09-20 12:02:37,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2024-09-20 12:02:37,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 64 states have internal predecessors, (65), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-20 12:02:37,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2024-09-20 12:02:37,026 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 77 [2024-09-20 12:02:37,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:02:37,026 INFO L474 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2024-09-20 12:02:37,026 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-20 12:02:37,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:37,027 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2024-09-20 12:02:37,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-09-20 12:02:37,027 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:37,027 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:37,041 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-09-20 12:02:37,228 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:37,228 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:37,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:37,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1305991084, now seen corresponding path program 17 times [2024-09-20 12:02:37,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:37,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836379831] [2024-09-20 12:02:37,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:37,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:37,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:37,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:37,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-20 12:02:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:37,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-20 12:02:37,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:37,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-20 12:02:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:37,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 12:02:37,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:37,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 12:02:37,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:37,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-20 12:02:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:37,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 12:02:37,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:37,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-20 12:02:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:37,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 12:02:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:37,547 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 119 proven. 70 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-20 12:02:37,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:37,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836379831] [2024-09-20 12:02:37,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836379831] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:02:37,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792566748] [2024-09-20 12:02:37,548 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 12:02:37,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:37,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:02:37,549 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:02:37,550 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-20 12:02:37,593 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-09-20 12:02:37,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:02:37,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-20 12:02:37,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:02:37,833 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-20 12:02:37,834 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:02:38,021 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-20 12:02:38,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792566748] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:02:38,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:02:38,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2024-09-20 12:02:38,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774161782] [2024-09-20 12:02:38,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:02:38,022 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-20 12:02:38,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:02:38,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-20 12:02:38,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2024-09-20 12:02:38,024 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand has 35 states, 35 states have (on average 1.8) internal successors, (63), 35 states have internal predecessors, (63), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-20 12:02:38,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:02:38,126 INFO L93 Difference]: Finished difference Result 126 states and 137 transitions. [2024-09-20 12:02:38,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-20 12:02:38,127 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.8) internal successors, (63), 35 states have internal predecessors, (63), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 84 [2024-09-20 12:02:38,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:02:38,128 INFO L225 Difference]: With dead ends: 126 [2024-09-20 12:02:38,128 INFO L226 Difference]: Without dead ends: 88 [2024-09-20 12:02:38,128 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 158 SyntacticMatches, 19 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2024-09-20 12:02:38,129 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:02:38,129 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 209 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:02:38,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-09-20 12:02:38,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-09-20 12:02:38,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 64 states have (on average 1.03125) internal successors, (66), 65 states have internal predecessors, (66), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-20 12:02:38,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2024-09-20 12:02:38,134 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 84 [2024-09-20 12:02:38,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:02:38,134 INFO L474 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2024-09-20 12:02:38,135 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.8) internal successors, (63), 35 states have internal predecessors, (63), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-20 12:02:38,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:38,135 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2024-09-20 12:02:38,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-09-20 12:02:38,135 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:38,135 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:38,148 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-09-20 12:02:38,336 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:38,336 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:38,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:38,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1023097672, now seen corresponding path program 18 times [2024-09-20 12:02:38,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:38,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910675835] [2024-09-20 12:02:38,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:38,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:38,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:38,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:38,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-20 12:02:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:38,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-20 12:02:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:38,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-20 12:02:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:38,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-20 12:02:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:38,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 12:02:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:38,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 12:02:38,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:38,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-20 12:02:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:38,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 12:02:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:38,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-20 12:02:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:38,533 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 63 proven. 136 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-20 12:02:38,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:38,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910675835] [2024-09-20 12:02:38,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910675835] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:02:38,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327977755] [2024-09-20 12:02:38,534 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 12:02:38,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:38,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:02:38,535 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:02:38,541 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-20 12:02:38,595 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-09-20 12:02:38,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:02:38,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-20 12:02:38,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:02:38,660 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 73 proven. 126 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-20 12:02:38,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:02:38,822 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 73 proven. 126 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-20 12:02:38,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327977755] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:02:38,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:02:38,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 18 [2024-09-20 12:02:38,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528975859] [2024-09-20 12:02:38,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:02:38,823 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-20 12:02:38,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:02:38,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-20 12:02:38,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2024-09-20 12:02:38,824 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-20 12:02:38,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:02:38,898 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2024-09-20 12:02:38,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-20 12:02:38,898 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 85 [2024-09-20 12:02:38,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:02:38,899 INFO L225 Difference]: With dead ends: 101 [2024-09-20 12:02:38,899 INFO L226 Difference]: Without dead ends: 99 [2024-09-20 12:02:38,900 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 177 SyntacticMatches, 20 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2024-09-20 12:02:38,900 INFO L434 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 [2024-09-20 12:02:38,900 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 82 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:02:38,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-09-20 12:02:38,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2024-09-20 12:02:38,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 70 states have internal predecessors, (71), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-20 12:02:38,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2024-09-20 12:02:38,905 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 85 [2024-09-20 12:02:38,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:02:38,906 INFO L474 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2024-09-20 12:02:38,906 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-20 12:02:38,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:38,906 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2024-09-20 12:02:38,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-09-20 12:02:38,907 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:38,907 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:38,919 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-09-20 12:02:39,110 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-09-20 12:02:39,111 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:39,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:39,111 INFO L85 PathProgramCache]: Analyzing trace with hash 359819627, now seen corresponding path program 19 times [2024-09-20 12:02:39,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:39,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116022087] [2024-09-20 12:02:39,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:39,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:39,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:39,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:39,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-20 12:02:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:39,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-20 12:02:39,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:39,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-20 12:02:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:39,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-20 12:02:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:39,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 12:02:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:39,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 12:02:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:39,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-20 12:02:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:39,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 12:02:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:39,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-20 12:02:39,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:39,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 12:02:39,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:39,425 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 147 proven. 83 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-20 12:02:39,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:39,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116022087] [2024-09-20 12:02:39,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116022087] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:02:39,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407953580] [2024-09-20 12:02:39,426 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 12:02:39,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:39,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:02:39,428 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:02:39,429 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-20 12:02:39,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:39,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-20 12:02:39,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:02:39,823 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-20 12:02:39,823 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:02:40,092 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-20 12:02:40,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407953580] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:02:40,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:02:40,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 38 [2024-09-20 12:02:40,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288203724] [2024-09-20 12:02:40,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:02:40,094 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-20 12:02:40,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:02:40,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-20 12:02:40,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=1077, Unknown=0, NotChecked=0, Total=1406 [2024-09-20 12:02:40,095 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand has 38 states, 38 states have (on average 1.7894736842105263) internal successors, (68), 38 states have internal predecessors, (68), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-20 12:02:40,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:02:40,252 INFO L93 Difference]: Finished difference Result 137 states and 149 transitions. [2024-09-20 12:02:40,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-20 12:02:40,255 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.7894736842105263) internal successors, (68), 38 states have internal predecessors, (68), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 92 [2024-09-20 12:02:40,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:02:40,256 INFO L225 Difference]: With dead ends: 137 [2024-09-20 12:02:40,256 INFO L226 Difference]: Without dead ends: 96 [2024-09-20 12:02:40,256 INFO L433 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 [2024-09-20 12:02:40,256 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:02:40,257 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 229 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:02:40,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-09-20 12:02:40,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-09-20 12:02:40,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 71 states have internal predecessors, (72), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-20 12:02:40,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2024-09-20 12:02:40,266 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 92 [2024-09-20 12:02:40,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:02:40,267 INFO L474 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2024-09-20 12:02:40,267 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.7894736842105263) internal successors, (68), 38 states have internal predecessors, (68), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-20 12:02:40,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:40,268 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2024-09-20 12:02:40,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-09-20 12:02:40,269 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:40,269 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:40,283 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-09-20 12:02:40,473 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-09-20 12:02:40,474 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:40,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:40,474 INFO L85 PathProgramCache]: Analyzing trace with hash -325612937, now seen corresponding path program 20 times [2024-09-20 12:02:40,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:40,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043358504] [2024-09-20 12:02:40,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:40,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:40,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:40,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:40,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-20 12:02:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:40,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-20 12:02:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:40,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-20 12:02:40,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:40,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 12:02:40,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:40,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-20 12:02:40,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:40,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-20 12:02:40,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:40,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 12:02:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:40,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 12:02:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:40,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 12:02:40,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:40,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-20 12:02:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:40,659 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 75 proven. 166 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-20 12:02:40,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:40,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043358504] [2024-09-20 12:02:40,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043358504] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:02:40,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780634899] [2024-09-20 12:02:40,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 12:02:40,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:40,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:02:40,664 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:02:40,665 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-20 12:02:40,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 12:02:40,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:02:40,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-20 12:02:40,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:02:40,771 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 86 proven. 155 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-20 12:02:40,772 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:02:40,967 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 86 proven. 155 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-20 12:02:40,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780634899] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:02:40,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:02:40,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 19 [2024-09-20 12:02:40,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50333109] [2024-09-20 12:02:40,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:02:40,968 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-20 12:02:40,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:02:40,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-20 12:02:40,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2024-09-20 12:02:40,968 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 17 states have internal predecessors, (46), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-20 12:02:41,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:02:41,044 INFO L93 Difference]: Finished difference Result 109 states and 111 transitions. [2024-09-20 12:02:41,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-20 12:02:41,044 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 17 states have internal predecessors, (46), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 93 [2024-09-20 12:02:41,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:02:41,045 INFO L225 Difference]: With dead ends: 109 [2024-09-20 12:02:41,045 INFO L226 Difference]: Without dead ends: 107 [2024-09-20 12:02:41,046 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 192 SyntacticMatches, 24 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2024-09-20 12:02:41,046 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:02:41,046 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 73 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:02:41,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-09-20 12:02:41,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103. [2024-09-20 12:02:41,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 76 states have internal predecessors, (77), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-20 12:02:41,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2024-09-20 12:02:41,051 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 93 [2024-09-20 12:02:41,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:02:41,052 INFO L474 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2024-09-20 12:02:41,052 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 17 states have internal predecessors, (46), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-20 12:02:41,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:41,052 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2024-09-20 12:02:41,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-09-20 12:02:41,053 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:41,053 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:41,065 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-09-20 12:02:41,253 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:41,254 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:41,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:41,254 INFO L85 PathProgramCache]: Analyzing trace with hash 740851404, now seen corresponding path program 21 times [2024-09-20 12:02:41,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:41,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059829112] [2024-09-20 12:02:41,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:41,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:41,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:41,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:41,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:41,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-20 12:02:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:41,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-20 12:02:41,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:41,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-20 12:02:41,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:41,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 12:02:41,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:41,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-20 12:02:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:41,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-20 12:02:41,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:41,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 12:02:41,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:41,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 12:02:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:41,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 12:02:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:41,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-20 12:02:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:41,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 12:02:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:41,547 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 178 proven. 97 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-20 12:02:41,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:41,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059829112] [2024-09-20 12:02:41,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059829112] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:02:41,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144950333] [2024-09-20 12:02:41,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 12:02:41,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:41,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:02:41,551 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:02:41,552 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-20 12:02:41,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-09-20 12:02:41,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:02:41,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-20 12:02:41,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:02:41,907 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-20 12:02:41,908 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:02:42,148 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-20 12:02:42,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144950333] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:02:42,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:02:42,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 41 [2024-09-20 12:02:42,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263239839] [2024-09-20 12:02:42,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:02:42,149 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-20 12:02:42,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:02:42,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-20 12:02:42,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=1258, Unknown=0, NotChecked=0, Total=1640 [2024-09-20 12:02:42,150 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand has 41 states, 41 states have (on average 1.7804878048780488) internal successors, (73), 41 states have internal predecessors, (73), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-20 12:02:42,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:02:42,275 INFO L93 Difference]: Finished difference Result 148 states and 161 transitions. [2024-09-20 12:02:42,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-20 12:02:42,276 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.7804878048780488) internal successors, (73), 41 states have internal predecessors, (73), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 100 [2024-09-20 12:02:42,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:02:42,277 INFO L225 Difference]: With dead ends: 148 [2024-09-20 12:02:42,277 INFO L226 Difference]: Without dead ends: 104 [2024-09-20 12:02:42,277 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 188 SyntacticMatches, 23 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1001 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=382, Invalid=1258, Unknown=0, NotChecked=0, Total=1640 [2024-09-20 12:02:42,278 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:02:42,278 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 244 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:02:42,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-09-20 12:02:42,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-09-20 12:02:42,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 77 states have internal predecessors, (78), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-20 12:02:42,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2024-09-20 12:02:42,284 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 100 [2024-09-20 12:02:42,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:02:42,284 INFO L474 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2024-09-20 12:02:42,285 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.7804878048780488) internal successors, (73), 41 states have internal predecessors, (73), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-20 12:02:42,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:42,285 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2024-09-20 12:02:42,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-09-20 12:02:42,285 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:42,286 INFO L216 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:42,300 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-09-20 12:02:42,486 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-09-20 12:02:42,487 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:42,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:42,487 INFO L85 PathProgramCache]: Analyzing trace with hash -741223464, now seen corresponding path program 22 times [2024-09-20 12:02:42,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:42,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154966220] [2024-09-20 12:02:42,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:42,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:42,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:42,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:42,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-20 12:02:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:42,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 12:02:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:42,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 12:02:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:42,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 12:02:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:42,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-20 12:02:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:42,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 12:02:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:42,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 12:02:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:42,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 12:02:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:42,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 12:02:42,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:42,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 12:02:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:42,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 12:02:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:42,699 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 88 proven. 199 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-20 12:02:42,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:42,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154966220] [2024-09-20 12:02:42,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154966220] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:02:42,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527406399] [2024-09-20 12:02:42,700 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 12:02:42,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:42,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:02:42,701 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:02:42,703 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-20 12:02:42,746 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 12:02:42,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:02:42,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-20 12:02:42,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:02:42,812 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 100 proven. 187 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-20 12:02:42,812 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:02:43,030 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 100 proven. 187 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-20 12:02:43,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527406399] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:02:43,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:02:43,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 20 [2024-09-20 12:02:43,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974741394] [2024-09-20 12:02:43,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:02:43,031 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-20 12:02:43,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:02:43,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-20 12:02:43,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2024-09-20 12:02:43,032 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 18 states have internal predecessors, (49), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-20 12:02:43,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:02:43,118 INFO L93 Difference]: Finished difference Result 117 states and 119 transitions. [2024-09-20 12:02:43,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-20 12:02:43,119 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 18 states have internal predecessors, (49), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 101 [2024-09-20 12:02:43,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:02:43,120 INFO L225 Difference]: With dead ends: 117 [2024-09-20 12:02:43,120 INFO L226 Difference]: Without dead ends: 115 [2024-09-20 12:02:43,120 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 211 SyntacticMatches, 24 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2024-09-20 12:02:43,121 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:02:43,121 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 80 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:02:43,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-09-20 12:02:43,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2024-09-20 12:02:43,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 81 states have (on average 1.0246913580246915) internal successors, (83), 82 states have internal predecessors, (83), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-20 12:02:43,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2024-09-20 12:02:43,130 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 101 [2024-09-20 12:02:43,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:02:43,130 INFO L474 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2024-09-20 12:02:43,130 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 18 states have internal predecessors, (49), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-20 12:02:43,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:43,131 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2024-09-20 12:02:43,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-09-20 12:02:43,131 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:43,131 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:43,149 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-09-20 12:02:43,337 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-09-20 12:02:43,337 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:43,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:43,338 INFO L85 PathProgramCache]: Analyzing trace with hash 567023179, now seen corresponding path program 23 times [2024-09-20 12:02:43,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:43,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432887210] [2024-09-20 12:02:43,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:43,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:43,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:43,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-09-20 12:02:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:43,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 12:02:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:43,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 12:02:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:43,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 12:02:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:43,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-20 12:02:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:43,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 12:02:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:43,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 12:02:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:43,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 12:02:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:43,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 12:02:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:43,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 12:02:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:43,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 12:02:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:43,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 12:02:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:43,686 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 212 proven. 112 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-20 12:02:43,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:43,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432887210] [2024-09-20 12:02:43,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432887210] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:02:43,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546721138] [2024-09-20 12:02:43,687 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 12:02:43,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:43,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:02:43,688 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:02:43,690 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-09-20 12:02:43,739 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-09-20 12:02:43,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:02:43,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-20 12:02:43,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:02:44,071 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-20 12:02:44,071 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:02:44,363 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-20 12:02:44,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546721138] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:02:44,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:02:44,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 44 [2024-09-20 12:02:44,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017199916] [2024-09-20 12:02:44,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:02:44,364 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-20 12:02:44,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:02:44,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-20 12:02:44,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=1453, Unknown=0, NotChecked=0, Total=1892 [2024-09-20 12:02:44,365 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand has 44 states, 44 states have (on average 1.7727272727272727) internal successors, (78), 44 states have internal predecessors, (78), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-20 12:02:44,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:02:44,485 INFO L93 Difference]: Finished difference Result 159 states and 173 transitions. [2024-09-20 12:02:44,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-20 12:02:44,485 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.7727272727272727) internal successors, (78), 44 states have internal predecessors, (78), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 108 [2024-09-20 12:02:44,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:02:44,487 INFO L225 Difference]: With dead ends: 159 [2024-09-20 12:02:44,487 INFO L226 Difference]: Without dead ends: 112 [2024-09-20 12:02:44,487 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 203 SyntacticMatches, 25 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1164 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=439, Invalid=1453, Unknown=0, NotChecked=0, Total=1892 [2024-09-20 12:02:44,488 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:02:44,488 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 204 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:02:44,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-09-20 12:02:44,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-09-20 12:02:44,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 82 states have (on average 1.024390243902439) internal successors, (84), 83 states have internal predecessors, (84), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-20 12:02:44,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2024-09-20 12:02:44,494 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 108 [2024-09-20 12:02:44,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:02:44,494 INFO L474 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2024-09-20 12:02:44,494 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.7727272727272727) internal successors, (78), 44 states have internal predecessors, (78), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-20 12:02:44,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:44,495 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2024-09-20 12:02:44,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-09-20 12:02:44,495 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:44,495 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:44,507 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-09-20 12:02:44,696 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-09-20 12:02:44,696 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:44,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:44,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1132093609, now seen corresponding path program 24 times [2024-09-20 12:02:44,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:44,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748371759] [2024-09-20 12:02:44,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:44,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:44,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:44,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:44,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-20 12:02:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:44,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-20 12:02:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:44,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-20 12:02:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:44,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 12:02:44,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:44,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 12:02:44,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:44,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 12:02:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:44,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 12:02:44,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:44,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 12:02:44,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:44,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 12:02:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:44,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-20 12:02:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:44,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 12:02:44,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:44,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 12:02:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:44,952 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 102 proven. 235 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-20 12:02:44,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:44,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748371759] [2024-09-20 12:02:44,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748371759] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:02:44,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623828303] [2024-09-20 12:02:44,953 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 12:02:44,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:44,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:02:44,954 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:02:44,958 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-09-20 12:02:45,021 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-09-20 12:02:45,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:02:45,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-20 12:02:45,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:02:45,091 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 115 proven. 222 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-20 12:02:45,091 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:02:45,301 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 115 proven. 222 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-20 12:02:45,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623828303] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:02:45,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:02:45,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 21 [2024-09-20 12:02:45,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621834640] [2024-09-20 12:02:45,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:02:45,303 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-20 12:02:45,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:02:45,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-20 12:02:45,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2024-09-20 12:02:45,304 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 19 states have internal predecessors, (52), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-20 12:02:45,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:02:45,391 INFO L93 Difference]: Finished difference Result 125 states and 127 transitions. [2024-09-20 12:02:45,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-20 12:02:45,391 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 19 states have internal predecessors, (52), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 109 [2024-09-20 12:02:45,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:02:45,392 INFO L225 Difference]: With dead ends: 125 [2024-09-20 12:02:45,392 INFO L226 Difference]: Without dead ends: 123 [2024-09-20 12:02:45,392 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 228 SyntacticMatches, 26 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2024-09-20 12:02:45,392 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:02:45,393 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 103 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:02:45,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-09-20 12:02:45,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2024-09-20 12:02:45,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 88 states have internal predecessors, (89), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-20 12:02:45,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2024-09-20 12:02:45,399 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 109 [2024-09-20 12:02:45,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:02:45,400 INFO L474 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2024-09-20 12:02:45,400 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 19 states have internal predecessors, (52), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-20 12:02:45,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:45,400 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2024-09-20 12:02:45,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-09-20 12:02:45,400 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:45,401 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:45,412 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-09-20 12:02:45,604 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-09-20 12:02:45,605 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:45,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:45,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1325191700, now seen corresponding path program 25 times [2024-09-20 12:02:45,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:45,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319742316] [2024-09-20 12:02:45,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:45,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:46,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:46,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-20 12:02:46,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:46,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-20 12:02:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:46,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-20 12:02:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:46,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 12:02:46,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:46,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 12:02:46,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:46,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 12:02:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:46,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 12:02:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:46,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 12:02:46,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:46,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 12:02:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:46,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-20 12:02:46,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:46,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 12:02:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:46,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 12:02:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:46,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 12:02:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:46,125 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 249 proven. 128 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-20 12:02:46,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:46,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319742316] [2024-09-20 12:02:46,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319742316] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:02:46,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123836458] [2024-09-20 12:02:46,126 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 12:02:46,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:46,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:02:46,129 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:02:46,131 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-09-20 12:02:46,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:46,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-20 12:02:46,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:02:46,578 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-20 12:02:46,579 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:02:46,926 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-20 12:02:46,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123836458] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:02:46,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:02:46,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 47 [2024-09-20 12:02:46,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283010030] [2024-09-20 12:02:46,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:02:46,927 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-09-20 12:02:46,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:02:46,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-09-20 12:02:46,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=500, Invalid=1662, Unknown=0, NotChecked=0, Total=2162 [2024-09-20 12:02:46,929 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand has 47 states, 47 states have (on average 1.7659574468085106) internal successors, (83), 47 states have internal predecessors, (83), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-20 12:02:47,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:02:47,074 INFO L93 Difference]: Finished difference Result 170 states and 185 transitions. [2024-09-20 12:02:47,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-20 12:02:47,074 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.7659574468085106) internal successors, (83), 47 states have internal predecessors, (83), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 116 [2024-09-20 12:02:47,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:02:47,075 INFO L225 Difference]: With dead ends: 170 [2024-09-20 12:02:47,075 INFO L226 Difference]: Without dead ends: 120 [2024-09-20 12:02:47,076 INFO L433 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 [2024-09-20 12:02:47,076 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:02:47,076 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 229 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:02:47,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-09-20 12:02:47,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2024-09-20 12:02:47,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 89 states have internal predecessors, (90), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-20 12:02:47,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2024-09-20 12:02:47,083 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 116 [2024-09-20 12:02:47,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:02:47,083 INFO L474 AbstractCegarLoop]: Abstraction has 120 states and 121 transitions. [2024-09-20 12:02:47,083 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.7659574468085106) internal successors, (83), 47 states have internal predecessors, (83), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-20 12:02:47,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:47,083 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 121 transitions. [2024-09-20 12:02:47,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-09-20 12:02:47,084 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:47,084 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:47,096 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-09-20 12:02:47,284 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,27 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:47,285 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:47,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:47,285 INFO L85 PathProgramCache]: Analyzing trace with hash 358148856, now seen corresponding path program 26 times [2024-09-20 12:02:47,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:47,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216371228] [2024-09-20 12:02:47,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:47,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:47,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:47,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-20 12:02:47,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:47,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 12:02:47,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:47,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 12:02:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:47,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 12:02:47,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:47,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 12:02:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:47,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 12:02:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:47,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 12:02:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:47,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 12:02:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:47,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-20 12:02:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:47,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 12:02:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:47,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-20 12:02:47,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:47,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 12:02:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:47,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 12:02:47,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:47,530 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 117 proven. 274 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-20 12:02:47,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:47,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216371228] [2024-09-20 12:02:47,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216371228] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:02:47,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942937141] [2024-09-20 12:02:47,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 12:02:47,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:47,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:02:47,532 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:02:47,533 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-09-20 12:02:47,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 12:02:47,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:02:47,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-09-20 12:02:47,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:02:47,652 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 131 proven. 260 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-20 12:02:47,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:02:47,904 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 131 proven. 260 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-20 12:02:47,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942937141] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:02:47,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:02:47,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 22 [2024-09-20 12:02:47,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782792180] [2024-09-20 12:02:47,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:02:47,905 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-20 12:02:47,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:02:47,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-20 12:02:47,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2024-09-20 12:02:47,906 INFO L87 Difference]: Start difference. First operand 120 states and 121 transitions. Second operand has 22 states, 22 states have (on average 2.5) internal successors, (55), 20 states have internal predecessors, (55), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-20 12:02:47,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:02:47,985 INFO L93 Difference]: Finished difference Result 133 states and 135 transitions. [2024-09-20 12:02:47,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-09-20 12:02:47,985 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5) internal successors, (55), 20 states have internal predecessors, (55), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 117 [2024-09-20 12:02:47,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:02:47,986 INFO L225 Difference]: With dead ends: 133 [2024-09-20 12:02:47,986 INFO L226 Difference]: Without dead ends: 131 [2024-09-20 12:02:47,987 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 243 SyntacticMatches, 30 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2024-09-20 12:02:47,987 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:02:47,987 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 79 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:02:47,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-09-20 12:02:48,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2024-09-20 12:02:48,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 93 states have (on average 1.021505376344086) internal successors, (95), 94 states have internal predecessors, (95), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-20 12:02:48,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2024-09-20 12:02:48,004 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 117 [2024-09-20 12:02:48,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:02:48,005 INFO L474 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2024-09-20 12:02:48,005 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.5) internal successors, (55), 20 states have internal predecessors, (55), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-20 12:02:48,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:48,005 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2024-09-20 12:02:48,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-09-20 12:02:48,006 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:48,006 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:48,018 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-09-20 12:02:48,209 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-09-20 12:02:48,210 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:48,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:48,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1584219349, now seen corresponding path program 27 times [2024-09-20 12:02:48,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:48,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61507510] [2024-09-20 12:02:48,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:48,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:48,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:48,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:48,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-20 12:02:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:48,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 12:02:48,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:48,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 12:02:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:48,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 12:02:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:48,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 12:02:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:48,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 12:02:48,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:48,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 12:02:48,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:48,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 12:02:48,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:48,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-20 12:02:48,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:48,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 12:02:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:48,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-20 12:02:48,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:48,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 12:02:48,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:48,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 12:02:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:48,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 12:02:48,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:48,625 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 289 proven. 145 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-20 12:02:48,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:48,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61507510] [2024-09-20 12:02:48,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61507510] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:02:48,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64333782] [2024-09-20 12:02:48,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 12:02:48,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:48,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:02:48,628 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:02:48,635 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-09-20 12:02:48,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-09-20 12:02:48,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:02:48,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-20 12:02:48,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:02:49,110 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-20 12:02:49,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:02:49,465 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-20 12:02:49,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64333782] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:02:49,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:02:49,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 50 [2024-09-20 12:02:49,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157087243] [2024-09-20 12:02:49,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:02:49,466 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-09-20 12:02:49,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:02:49,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-09-20 12:02:49,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=1885, Unknown=0, NotChecked=0, Total=2450 [2024-09-20 12:02:49,467 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand has 50 states, 50 states have (on average 1.76) internal successors, (88), 50 states have internal predecessors, (88), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-20 12:02:49,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:02:49,646 INFO L93 Difference]: Finished difference Result 181 states and 197 transitions. [2024-09-20 12:02:49,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-20 12:02:49,646 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.76) internal successors, (88), 50 states have internal predecessors, (88), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 124 [2024-09-20 12:02:49,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:02:49,647 INFO L225 Difference]: With dead ends: 181 [2024-09-20 12:02:49,647 INFO L226 Difference]: Without dead ends: 128 [2024-09-20 12:02:49,648 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 233 SyntacticMatches, 29 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1526 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=565, Invalid=1885, Unknown=0, NotChecked=0, Total=2450 [2024-09-20 12:02:49,648 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 12:02:49,648 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 410 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 12:02:49,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-09-20 12:02:49,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-09-20 12:02:49,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 94 states have (on average 1.0212765957446808) internal successors, (96), 95 states have internal predecessors, (96), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-20 12:02:49,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2024-09-20 12:02:49,655 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 124 [2024-09-20 12:02:49,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:02:49,655 INFO L474 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2024-09-20 12:02:49,655 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.76) internal successors, (88), 50 states have internal predecessors, (88), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-20 12:02:49,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:49,656 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2024-09-20 12:02:49,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-09-20 12:02:49,656 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:49,656 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:49,668 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-09-20 12:02:49,860 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:49,861 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:49,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:49,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1511042103, now seen corresponding path program 28 times [2024-09-20 12:02:49,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:49,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009018637] [2024-09-20 12:02:49,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:49,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:50,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:50,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:50,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 12:02:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:50,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-20 12:02:50,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:50,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 12:02:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:50,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-20 12:02:50,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:50,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 12:02:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:50,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-20 12:02:50,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:50,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 12:02:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:50,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-20 12:02:50,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:50,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 12:02:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:50,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-20 12:02:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:50,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 12:02:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:50,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-20 12:02:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:50,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 12:02:50,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:50,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-20 12:02:50,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:50,117 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 133 proven. 316 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-20 12:02:50,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:50,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009018637] [2024-09-20 12:02:50,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009018637] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:02:50,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727276042] [2024-09-20 12:02:50,117 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 12:02:50,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:50,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:02:50,119 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:02:50,120 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-09-20 12:02:50,171 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 12:02:50,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:02:50,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-20 12:02:50,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:02:50,263 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 148 proven. 301 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-20 12:02:50,264 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:02:50,537 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 148 proven. 301 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-20 12:02:50,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727276042] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:02:50,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:02:50,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 23 [2024-09-20 12:02:50,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993227747] [2024-09-20 12:02:50,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:02:50,538 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-20 12:02:50,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:02:50,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-20 12:02:50,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2024-09-20 12:02:50,539 INFO L87 Difference]: Start difference. First operand 128 states and 129 transitions. Second operand has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 21 states have internal predecessors, (58), 16 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-20 12:02:50,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:02:50,632 INFO L93 Difference]: Finished difference Result 141 states and 143 transitions. [2024-09-20 12:02:50,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-20 12:02:50,633 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 21 states have internal predecessors, (58), 16 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 125 [2024-09-20 12:02:50,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:02:50,634 INFO L225 Difference]: With dead ends: 141 [2024-09-20 12:02:50,634 INFO L226 Difference]: Without dead ends: 139 [2024-09-20 12:02:50,634 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 260 SyntacticMatches, 32 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2024-09-20 12:02:50,634 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:02:50,634 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 87 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:02:50,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-09-20 12:02:50,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2024-09-20 12:02:50,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 99 states have (on average 1.02020202020202) internal successors, (101), 100 states have internal predecessors, (101), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-20 12:02:50,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2024-09-20 12:02:50,649 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 125 [2024-09-20 12:02:50,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:02:50,650 INFO L474 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2024-09-20 12:02:50,650 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 21 states have internal predecessors, (58), 16 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-20 12:02:50,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:50,650 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2024-09-20 12:02:50,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-09-20 12:02:50,651 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:50,651 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:50,668 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-09-20 12:02:50,851 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:50,852 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:50,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:50,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1144644876, now seen corresponding path program 29 times [2024-09-20 12:02:50,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:50,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043104855] [2024-09-20 12:02:50,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:50,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:50,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:51,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:51,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 12:02:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:51,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-20 12:02:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:51,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 12:02:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:51,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-20 12:02:51,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:51,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 12:02:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:51,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-20 12:02:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:51,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 12:02:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:51,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-20 12:02:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:51,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 12:02:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:51,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-20 12:02:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:51,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 12:02:51,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:51,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-20 12:02:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:51,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 12:02:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:51,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-20 12:02:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:51,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 12:02:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:51,408 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 332 proven. 163 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-20 12:02:51,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:51,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043104855] [2024-09-20 12:02:51,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043104855] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:02:51,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683731223] [2024-09-20 12:02:51,409 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 12:02:51,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:51,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:02:51,410 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:02:51,412 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-09-20 12:02:51,488 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-09-20 12:02:51,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:02:51,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-20 12:02:51,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:02:52,039 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-20 12:02:52,039 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:02:52,417 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-20 12:02:52,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683731223] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:02:52,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:02:52,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 53 [2024-09-20 12:02:52,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774270176] [2024-09-20 12:02:52,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:02:52,418 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-09-20 12:02:52,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:02:52,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-09-20 12:02:52,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=634, Invalid=2122, Unknown=0, NotChecked=0, Total=2756 [2024-09-20 12:02:52,424 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand has 53 states, 53 states have (on average 1.7547169811320755) internal successors, (93), 53 states have internal predecessors, (93), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-20 12:02:52,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:02:52,664 INFO L93 Difference]: Finished difference Result 192 states and 209 transitions. [2024-09-20 12:02:52,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-20 12:02:52,665 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.7547169811320755) internal successors, (93), 53 states have internal predecessors, (93), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 132 [2024-09-20 12:02:52,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:02:52,666 INFO L225 Difference]: With dead ends: 192 [2024-09-20 12:02:52,666 INFO L226 Difference]: Without dead ends: 136 [2024-09-20 12:02:52,669 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 248 SyntacticMatches, 31 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1725 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=634, Invalid=2122, Unknown=0, NotChecked=0, Total=2756 [2024-09-20 12:02:52,670 INFO L434 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 [2024-09-20 12:02:52,670 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 476 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 12:02:52,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-09-20 12:02:52,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-09-20 12:02:52,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 100 states have (on average 1.02) internal successors, (102), 101 states have internal predecessors, (102), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-20 12:02:52,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2024-09-20 12:02:52,680 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 132 [2024-09-20 12:02:52,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:02:52,681 INFO L474 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2024-09-20 12:02:52,681 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.7547169811320755) internal successors, (93), 53 states have internal predecessors, (93), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-20 12:02:52,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:52,681 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2024-09-20 12:02:52,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-09-20 12:02:52,682 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:52,682 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:52,694 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-09-20 12:02:52,882 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-09-20 12:02:52,883 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:52,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:52,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1888744936, now seen corresponding path program 30 times [2024-09-20 12:02:52,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:52,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189797924] [2024-09-20 12:02:52,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:52,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:53,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:53,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-20 12:02:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:53,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-20 12:02:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:53,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 12:02:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:53,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 12:02:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:53,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-20 12:02:53,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:53,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 12:02:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:53,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-20 12:02:53,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:53,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 12:02:53,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:53,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-20 12:02:53,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:53,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 12:02:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:53,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-20 12:02:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:53,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 12:02:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:53,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-20 12:02:53,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:53,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 12:02:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:53,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-20 12:02:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:53,176 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 150 proven. 361 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-20 12:02:53,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:53,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189797924] [2024-09-20 12:02:53,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189797924] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:02:53,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900903958] [2024-09-20 12:02:53,176 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 12:02:53,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:53,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:02:53,178 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:02:53,179 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-09-20 12:02:53,237 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2024-09-20 12:02:53,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:02:53,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-20 12:02:53,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:02:53,319 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 166 proven. 345 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-20 12:02:53,319 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:02:53,616 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 166 proven. 345 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-09-20 12:02:53,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900903958] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:02:53,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:02:53,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 24 [2024-09-20 12:02:53,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705753154] [2024-09-20 12:02:53,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:02:53,618 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-20 12:02:53,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:02:53,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-20 12:02:53,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=368, Unknown=0, NotChecked=0, Total=552 [2024-09-20 12:02:53,619 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 22 states have internal predecessors, (61), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-20 12:02:53,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:02:53,709 INFO L93 Difference]: Finished difference Result 149 states and 151 transitions. [2024-09-20 12:02:53,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-20 12:02:53,710 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 22 states have internal predecessors, (61), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 133 [2024-09-20 12:02:53,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:02:53,711 INFO L225 Difference]: With dead ends: 149 [2024-09-20 12:02:53,711 INFO L226 Difference]: Without dead ends: 147 [2024-09-20 12:02:53,711 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 279 SyntacticMatches, 32 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2024-09-20 12:02:53,712 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:02:53,712 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 74 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:02:53,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-09-20 12:02:53,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 143. [2024-09-20 12:02:53,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 105 states have (on average 1.019047619047619) internal successors, (107), 106 states have internal predecessors, (107), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-20 12:02:53,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2024-09-20 12:02:53,719 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 133 [2024-09-20 12:02:53,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:02:53,719 INFO L474 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2024-09-20 12:02:53,719 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 22 states have internal predecessors, (61), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-20 12:02:53,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:53,719 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2024-09-20 12:02:53,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-09-20 12:02:53,720 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:53,720 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:53,732 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-09-20 12:02:53,920 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:53,921 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:53,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:53,921 INFO L85 PathProgramCache]: Analyzing trace with hash 2092193803, now seen corresponding path program 31 times [2024-09-20 12:02:53,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:53,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598018154] [2024-09-20 12:02:53,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:53,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:54,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:54,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-20 12:02:54,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:54,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-20 12:02:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:54,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 12:02:54,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:54,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 12:02:54,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:54,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-20 12:02:54,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:54,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 12:02:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:54,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-20 12:02:54,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:54,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 12:02:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:54,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-20 12:02:54,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:54,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 12:02:54,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:54,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-20 12:02:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:54,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 12:02:54,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:54,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-20 12:02:54,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:54,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 12:02:54,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:54,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-20 12:02:54,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:54,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-20 12:02:54,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:54,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 378 proven. 182 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-20 12:02:54,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:54,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598018154] [2024-09-20 12:02:54,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598018154] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:02:54,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797798119] [2024-09-20 12:02:54,428 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 12:02:54,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:54,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:02:54,432 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:02:54,433 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-09-20 12:02:54,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:54,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-09-20 12:02:54,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:02:54,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-20 12:02:54,991 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:02:55,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-20 12:02:55,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797798119] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:02:55,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:02:55,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 56 [2024-09-20 12:02:55,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954935912] [2024-09-20 12:02:55,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:02:55,407 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-09-20 12:02:55,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:02:55,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-09-20 12:02:55,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=707, Invalid=2373, Unknown=0, NotChecked=0, Total=3080 [2024-09-20 12:02:55,409 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand has 56 states, 56 states have (on average 1.75) internal successors, (98), 56 states have internal predecessors, (98), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-20 12:02:55,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:02:55,609 INFO L93 Difference]: Finished difference Result 203 states and 221 transitions. [2024-09-20 12:02:55,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-20 12:02:55,609 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.75) internal successors, (98), 56 states have internal predecessors, (98), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 140 [2024-09-20 12:02:55,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:02:55,610 INFO L225 Difference]: With dead ends: 203 [2024-09-20 12:02:55,610 INFO L226 Difference]: Without dead ends: 144 [2024-09-20 12:02:55,611 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 263 SyntacticMatches, 33 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1936 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=707, Invalid=2373, Unknown=0, NotChecked=0, Total=3080 [2024-09-20 12:02:55,612 INFO L434 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 12:02:55,612 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 419 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 12:02:55,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-09-20 12:02:55,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-09-20 12:02:55,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 107 states have internal predecessors, (108), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-20 12:02:55,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2024-09-20 12:02:55,619 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 140 [2024-09-20 12:02:55,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:02:55,620 INFO L474 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2024-09-20 12:02:55,620 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.75) internal successors, (98), 56 states have internal predecessors, (98), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-20 12:02:55,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:55,620 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2024-09-20 12:02:55,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-09-20 12:02:55,621 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:55,621 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:55,633 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-09-20 12:02:55,821 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-09-20 12:02:55,822 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:55,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:55,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1294381335, now seen corresponding path program 32 times [2024-09-20 12:02:55,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:55,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483394235] [2024-09-20 12:02:55,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:55,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:56,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:56,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-20 12:02:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:56,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-20 12:02:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:56,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-20 12:02:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:56,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 12:02:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:56,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 12:02:56,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:56,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-20 12:02:56,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:56,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 12:02:56,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:56,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-20 12:02:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:56,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 12:02:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:56,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-20 12:02:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:56,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 12:02:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:56,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-20 12:02:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:56,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 12:02:56,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:56,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-20 12:02:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:56,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 12:02:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:56,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-20 12:02:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:56,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 168 proven. 409 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-20 12:02:56,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:56,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483394235] [2024-09-20 12:02:56,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483394235] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:02:56,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809073701] [2024-09-20 12:02:56,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 12:02:56,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:56,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:02:56,147 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:02:56,148 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-09-20 12:02:56,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 12:02:56,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:02:56,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-20 12:02:56,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:02:56,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 185 proven. 392 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-20 12:02:56,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:02:56,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 185 proven. 392 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-20 12:02:56,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809073701] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:02:56,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:02:56,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 25 [2024-09-20 12:02:56,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330629698] [2024-09-20 12:02:56,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:02:56,650 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-20 12:02:56,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:02:56,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-20 12:02:56,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=397, Unknown=0, NotChecked=0, Total=600 [2024-09-20 12:02:56,651 INFO L87 Difference]: Start difference. First operand 144 states and 145 transitions. Second operand has 25 states, 25 states have (on average 2.56) internal successors, (64), 23 states have internal predecessors, (64), 18 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-20 12:02:56,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:02:56,738 INFO L93 Difference]: Finished difference Result 157 states and 159 transitions. [2024-09-20 12:02:56,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-20 12:02:56,739 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.56) internal successors, (64), 23 states have internal predecessors, (64), 18 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 141 [2024-09-20 12:02:56,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:02:56,743 INFO L225 Difference]: With dead ends: 157 [2024-09-20 12:02:56,743 INFO L226 Difference]: Without dead ends: 155 [2024-09-20 12:02:56,743 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 294 SyntacticMatches, 36 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=209, Invalid=441, Unknown=0, NotChecked=0, Total=650 [2024-09-20 12:02:56,743 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:02:56,744 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 68 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:02:56,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-09-20 12:02:56,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2024-09-20 12:02:56,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 111 states have (on average 1.018018018018018) internal successors, (113), 112 states have internal predecessors, (113), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-20 12:02:56,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2024-09-20 12:02:56,757 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 141 [2024-09-20 12:02:56,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:02:56,758 INFO L474 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2024-09-20 12:02:56,758 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.56) internal successors, (64), 23 states have internal predecessors, (64), 18 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-20 12:02:56,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:56,758 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2024-09-20 12:02:56,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-09-20 12:02:56,760 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:56,760 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:56,772 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-09-20 12:02:56,960 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-09-20 12:02:56,960 INFO L399 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:56,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:56,961 INFO L85 PathProgramCache]: Analyzing trace with hash 907977772, now seen corresponding path program 33 times [2024-09-20 12:02:56,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:56,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921807638] [2024-09-20 12:02:56,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:56,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:56,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:57,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:57,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-20 12:02:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:57,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-20 12:02:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:57,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-20 12:02:57,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:57,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 12:02:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:57,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 12:02:57,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:57,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-20 12:02:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:57,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 12:02:57,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:57,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-20 12:02:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:57,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 12:02:57,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:57,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-20 12:02:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:57,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 12:02:57,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:57,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-20 12:02:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:57,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 12:02:57,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:57,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-20 12:02:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:57,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 12:02:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:57,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-20 12:02:57,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:57,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-20 12:02:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:57,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 427 proven. 202 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-20 12:02:57,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:57,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921807638] [2024-09-20 12:02:57,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921807638] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:02:57,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335062913] [2024-09-20 12:02:57,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 12:02:57,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:57,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:02:57,713 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:02:57,714 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-09-20 12:02:57,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-09-20 12:02:57,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:02:57,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-20 12:02:57,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:02:58,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-20 12:02:58,334 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:02:58,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-20 12:02:58,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335062913] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:02:58,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:02:58,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 59 [2024-09-20 12:02:58,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890308555] [2024-09-20 12:02:58,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:02:58,801 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-09-20 12:02:58,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:02:58,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-09-20 12:02:58,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=784, Invalid=2638, Unknown=0, NotChecked=0, Total=3422 [2024-09-20 12:02:58,803 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand has 59 states, 59 states have (on average 1.7457627118644068) internal successors, (103), 59 states have internal predecessors, (103), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-20 12:02:58,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:02:58,983 INFO L93 Difference]: Finished difference Result 214 states and 233 transitions. [2024-09-20 12:02:58,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-20 12:02:58,984 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.7457627118644068) internal successors, (103), 59 states have internal predecessors, (103), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 148 [2024-09-20 12:02:58,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:02:58,985 INFO L225 Difference]: With dead ends: 214 [2024-09-20 12:02:58,985 INFO L226 Difference]: Without dead ends: 152 [2024-09-20 12:02:58,986 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 278 SyntacticMatches, 35 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2159 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=784, Invalid=2638, Unknown=0, NotChecked=0, Total=3422 [2024-09-20 12:02:58,986 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 12:02:58,986 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 234 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 12:02:58,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-09-20 12:02:58,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2024-09-20 12:02:58,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 112 states have (on average 1.0178571428571428) internal successors, (114), 113 states have internal predecessors, (114), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-20 12:02:58,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 153 transitions. [2024-09-20 12:02:58,996 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 153 transitions. Word has length 148 [2024-09-20 12:02:58,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:02:58,996 INFO L474 AbstractCegarLoop]: Abstraction has 152 states and 153 transitions. [2024-09-20 12:02:58,996 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.7457627118644068) internal successors, (103), 59 states have internal predecessors, (103), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-20 12:02:58,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:58,996 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 153 transitions. [2024-09-20 12:02:58,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-09-20 12:02:58,997 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:02:58,997 INFO L216 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:02:59,009 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-09-20 12:02:59,201 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-09-20 12:02:59,202 INFO L399 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:02:59,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:02:59,202 INFO L85 PathProgramCache]: Analyzing trace with hash 844968248, now seen corresponding path program 34 times [2024-09-20 12:02:59,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:02:59,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505215416] [2024-09-20 12:02:59,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:02:59,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:02:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:59,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:02:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:59,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-20 12:02:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:59,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-20 12:02:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:59,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 12:02:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:59,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-20 12:02:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:59,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-20 12:02:59,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:59,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 12:02:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:59,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 12:02:59,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:59,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 12:02:59,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:59,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-20 12:02:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:59,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 12:02:59,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:59,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-20 12:02:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:59,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 12:02:59,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:59,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-20 12:02:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:59,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 12:02:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:59,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-20 12:02:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:59,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 12:02:59,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:59,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-20 12:02:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:02:59,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 187 proven. 460 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-20 12:02:59,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:02:59,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505215416] [2024-09-20 12:02:59,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505215416] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:02:59,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985250781] [2024-09-20 12:02:59,537 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 12:02:59,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:02:59,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:02:59,539 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:02:59,554 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-09-20 12:02:59,610 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 12:02:59,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:02:59,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-20 12:02:59,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:02:59,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 205 proven. 442 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-20 12:02:59,702 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:03:00,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 205 proven. 442 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-09-20 12:03:00,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985250781] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:03:00,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:03:00,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 26 [2024-09-20 12:03:00,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830674725] [2024-09-20 12:03:00,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:03:00,044 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-20 12:03:00,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:03:00,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-20 12:03:00,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=427, Unknown=0, NotChecked=0, Total=650 [2024-09-20 12:03:00,045 INFO L87 Difference]: Start difference. First operand 152 states and 153 transitions. Second operand has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 24 states have internal predecessors, (67), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-20 12:03:00,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:03:00,146 INFO L93 Difference]: Finished difference Result 165 states and 167 transitions. [2024-09-20 12:03:00,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-20 12:03:00,147 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 24 states have internal predecessors, (67), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 149 [2024-09-20 12:03:00,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:03:00,148 INFO L225 Difference]: With dead ends: 165 [2024-09-20 12:03:00,148 INFO L226 Difference]: Without dead ends: 163 [2024-09-20 12:03:00,148 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 313 SyntacticMatches, 36 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=229, Invalid=473, Unknown=0, NotChecked=0, Total=702 [2024-09-20 12:03:00,149 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:03:00,149 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 86 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:03:00,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-09-20 12:03:00,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2024-09-20 12:03:00,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 117 states have (on average 1.017094017094017) internal successors, (119), 118 states have internal predecessors, (119), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-20 12:03:00,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2024-09-20 12:03:00,157 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 149 [2024-09-20 12:03:00,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:03:00,157 INFO L474 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2024-09-20 12:03:00,157 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 24 states have internal predecessors, (67), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-20 12:03:00,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:00,157 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2024-09-20 12:03:00,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-09-20 12:03:00,158 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:03:00,158 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:03:00,170 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-09-20 12:03:00,363 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-09-20 12:03:00,363 INFO L399 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:03:00,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:00,363 INFO L85 PathProgramCache]: Analyzing trace with hash 580840683, now seen corresponding path program 35 times [2024-09-20 12:03:00,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:03:00,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601388493] [2024-09-20 12:03:00,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:03:00,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:03:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:00,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:03:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:00,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-20 12:03:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:00,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-20 12:03:00,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:00,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 12:03:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:00,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-20 12:03:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:00,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-20 12:03:00,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:00,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 12:03:00,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:00,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 12:03:00,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:00,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 12:03:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:00,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-20 12:03:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:00,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 12:03:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:00,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-20 12:03:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:00,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 12:03:00,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:00,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-20 12:03:00,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:00,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 12:03:00,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:00,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-20 12:03:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:00,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 12:03:00,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:00,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-20 12:03:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:00,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-20 12:03:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:00,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 479 proven. 223 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-20 12:03:00,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:03:00,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601388493] [2024-09-20 12:03:00,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601388493] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:03:00,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612714512] [2024-09-20 12:03:00,969 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 12:03:00,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:03:00,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:03:00,971 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:03:00,972 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-09-20 12:03:01,040 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2024-09-20 12:03:01,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:03:01,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-20 12:03:01,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:03:01,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-20 12:03:01,678 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:03:02,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-20 12:03:02,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612714512] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:03:02,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:03:02,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 62 [2024-09-20 12:03:02,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717279027] [2024-09-20 12:03:02,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:03:02,190 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-09-20 12:03:02,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:03:02,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-09-20 12:03:02,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=865, Invalid=2917, Unknown=0, NotChecked=0, Total=3782 [2024-09-20 12:03:02,192 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand has 62 states, 62 states have (on average 1.7419354838709677) internal successors, (108), 62 states have internal predecessors, (108), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-20 12:03:02,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:03:02,418 INFO L93 Difference]: Finished difference Result 225 states and 245 transitions. [2024-09-20 12:03:02,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-20 12:03:02,419 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.7419354838709677) internal successors, (108), 62 states have internal predecessors, (108), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 156 [2024-09-20 12:03:02,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:03:02,420 INFO L225 Difference]: With dead ends: 225 [2024-09-20 12:03:02,420 INFO L226 Difference]: Without dead ends: 160 [2024-09-20 12:03:02,421 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 293 SyntacticMatches, 37 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2394 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=865, Invalid=2917, Unknown=0, NotChecked=0, Total=3782 [2024-09-20 12:03:02,422 INFO L434 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 12:03:02,423 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 282 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 12:03:02,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-09-20 12:03:02,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2024-09-20 12:03:02,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 118 states have (on average 1.0169491525423728) internal successors, (120), 119 states have internal predecessors, (120), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-20 12:03:02,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 161 transitions. [2024-09-20 12:03:02,433 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 161 transitions. Word has length 156 [2024-09-20 12:03:02,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:03:02,433 INFO L474 AbstractCegarLoop]: Abstraction has 160 states and 161 transitions. [2024-09-20 12:03:02,433 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.7419354838709677) internal successors, (108), 62 states have internal predecessors, (108), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-20 12:03:02,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:02,433 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 161 transitions. [2024-09-20 12:03:02,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-09-20 12:03:02,434 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:03:02,434 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:03:02,447 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-09-20 12:03:02,634 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-09-20 12:03:02,635 INFO L399 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:03:02,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:02,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1523208713, now seen corresponding path program 36 times [2024-09-20 12:03:02,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:03:02,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816603389] [2024-09-20 12:03:02,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:03:02,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:03:02,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:03,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:03:03,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:03,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 12:03:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:03,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 12:03:03,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:03,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 12:03:03,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:03,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-20 12:03:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:03,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 12:03:03,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:03,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 12:03:03,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:03,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 12:03:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:03,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 12:03:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:03,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 12:03:03,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:03,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 12:03:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:03,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 12:03:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:03,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-20 12:03:03,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:03,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 12:03:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:03,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-20 12:03:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:03,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 12:03:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:03,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-20 12:03:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:03,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 12:03:03,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:03,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-20 12:03:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:03,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 207 proven. 514 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-20 12:03:03,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:03:03,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816603389] [2024-09-20 12:03:03,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816603389] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:03:03,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332808603] [2024-09-20 12:03:03,024 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 12:03:03,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:03:03,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:03:03,025 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:03:03,026 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-09-20 12:03:03,097 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-09-20 12:03:03,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:03:03,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-20 12:03:03,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:03:03,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 226 proven. 495 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-20 12:03:03,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:03:03,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 226 proven. 495 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-20 12:03:03,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332808603] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:03:03,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:03:03,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 27 [2024-09-20 12:03:03,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964760310] [2024-09-20 12:03:03,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:03:03,571 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-20 12:03:03,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:03:03,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-20 12:03:03,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=458, Unknown=0, NotChecked=0, Total=702 [2024-09-20 12:03:03,571 INFO L87 Difference]: Start difference. First operand 160 states and 161 transitions. Second operand has 27 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 25 states have internal predecessors, (70), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-20 12:03:03,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:03:03,691 INFO L93 Difference]: Finished difference Result 173 states and 175 transitions. [2024-09-20 12:03:03,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-09-20 12:03:03,691 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 25 states have internal predecessors, (70), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 157 [2024-09-20 12:03:03,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:03:03,693 INFO L225 Difference]: With dead ends: 173 [2024-09-20 12:03:03,693 INFO L226 Difference]: Without dead ends: 171 [2024-09-20 12:03:03,693 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 330 SyntacticMatches, 38 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=250, Invalid=506, Unknown=0, NotChecked=0, Total=756 [2024-09-20 12:03:03,693 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:03:03,694 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 70 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:03:03,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-09-20 12:03:03,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2024-09-20 12:03:03,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 123 states have (on average 1.016260162601626) internal successors, (125), 124 states have internal predecessors, (125), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-20 12:03:03,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2024-09-20 12:03:03,702 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 157 [2024-09-20 12:03:03,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:03:03,702 INFO L474 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2024-09-20 12:03:03,703 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 25 states have internal predecessors, (70), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-20 12:03:03,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:03,703 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2024-09-20 12:03:03,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-09-20 12:03:03,703 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:03:03,703 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:03:03,716 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-09-20 12:03:03,907 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-09-20 12:03:03,908 INFO L399 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:03:03,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:03,908 INFO L85 PathProgramCache]: Analyzing trace with hash -545035444, now seen corresponding path program 37 times [2024-09-20 12:03:03,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:03:03,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981939675] [2024-09-20 12:03:03,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:03:03,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:03:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:04,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:03:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:04,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 12:03:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:04,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 12:03:04,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:04,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 12:03:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:04,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-20 12:03:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:04,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 12:03:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:04,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 12:03:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:04,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 12:03:04,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:04,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 12:03:04,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:04,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 12:03:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:04,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 12:03:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:04,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 12:03:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:04,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-20 12:03:04,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:04,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 12:03:04,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:04,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-20 12:03:04,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:04,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 12:03:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:04,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-20 12:03:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:04,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 12:03:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:04,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-20 12:03:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:04,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 12:03:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:04,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 534 proven. 245 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-20 12:03:04,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:03:04,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981939675] [2024-09-20 12:03:04,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981939675] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:03:04,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352774070] [2024-09-20 12:03:04,588 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 12:03:04,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:03:04,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:03:04,590 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:03:04,591 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-09-20 12:03:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:04,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-20 12:03:04,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:03:05,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-20 12:03:05,324 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:03:05,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-20 12:03:05,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352774070] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:03:05,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:03:05,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 65 [2024-09-20 12:03:05,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983344652] [2024-09-20 12:03:05,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:03:05,874 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-09-20 12:03:05,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:03:05,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-09-20 12:03:05,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=950, Invalid=3210, Unknown=0, NotChecked=0, Total=4160 [2024-09-20 12:03:05,875 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand has 65 states, 65 states have (on average 1.7384615384615385) internal successors, (113), 65 states have internal predecessors, (113), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-20 12:03:06,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:03:06,098 INFO L93 Difference]: Finished difference Result 236 states and 257 transitions. [2024-09-20 12:03:06,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-20 12:03:06,098 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.7384615384615385) internal successors, (113), 65 states have internal predecessors, (113), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 164 [2024-09-20 12:03:06,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:03:06,099 INFO L225 Difference]: With dead ends: 236 [2024-09-20 12:03:06,099 INFO L226 Difference]: Without dead ends: 168 [2024-09-20 12:03:06,100 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 308 SyntacticMatches, 39 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2641 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=950, Invalid=3210, Unknown=0, NotChecked=0, Total=4160 [2024-09-20 12:03:06,100 INFO L434 NwaCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 12:03:06,100 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 376 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 12:03:06,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-09-20 12:03:06,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-09-20 12:03:06,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 124 states have (on average 1.0161290322580645) internal successors, (126), 125 states have internal predecessors, (126), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-20 12:03:06,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 169 transitions. [2024-09-20 12:03:06,109 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 169 transitions. Word has length 164 [2024-09-20 12:03:06,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:03:06,110 INFO L474 AbstractCegarLoop]: Abstraction has 168 states and 169 transitions. [2024-09-20 12:03:06,110 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.7384615384615385) internal successors, (113), 65 states have internal predecessors, (113), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-20 12:03:06,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:06,110 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 169 transitions. [2024-09-20 12:03:06,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-09-20 12:03:06,111 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:03:06,111 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:03:06,123 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-09-20 12:03:06,314 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-09-20 12:03:06,314 INFO L399 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:03:06,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:06,315 INFO L85 PathProgramCache]: Analyzing trace with hash -151101352, now seen corresponding path program 38 times [2024-09-20 12:03:06,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:03:06,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556546900] [2024-09-20 12:03:06,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:03:06,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:03:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:06,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:03:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:06,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-20 12:03:06,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:06,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-20 12:03:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:06,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 12:03:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:06,697 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 12:03:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:06,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 12:03:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:06,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 12:03:06,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:06,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 12:03:06,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:06,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 12:03:06,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:06,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-20 12:03:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:06,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 12:03:06,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:06,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 12:03:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:06,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 12:03:06,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:06,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-20 12:03:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:06,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 12:03:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:06,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-20 12:03:06,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:06,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 12:03:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:06,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-20 12:03:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:06,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 12:03:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:06,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-20 12:03:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:06,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 228 proven. 571 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-20 12:03:06,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:03:06,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556546900] [2024-09-20 12:03:06,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556546900] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:03:06,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136984096] [2024-09-20 12:03:06,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 12:03:06,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:03:06,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:03:06,716 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:03:06,719 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-09-20 12:03:06,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 12:03:06,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:03:06,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-09-20 12:03:06,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:03:06,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 248 proven. 551 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-20 12:03:06,899 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:03:07,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 248 proven. 551 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-20 12:03:07,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136984096] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:03:07,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:03:07,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 28 [2024-09-20 12:03:07,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575982623] [2024-09-20 12:03:07,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:03:07,326 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-20 12:03:07,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:03:07,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-20 12:03:07,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=490, Unknown=0, NotChecked=0, Total=756 [2024-09-20 12:03:07,327 INFO L87 Difference]: Start difference. First operand 168 states and 169 transitions. Second operand has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 26 states have internal predecessors, (73), 21 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-20 12:03:07,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:03:07,407 INFO L93 Difference]: Finished difference Result 181 states and 183 transitions. [2024-09-20 12:03:07,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-20 12:03:07,408 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 26 states have internal predecessors, (73), 21 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 165 [2024-09-20 12:03:07,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:03:07,409 INFO L225 Difference]: With dead ends: 181 [2024-09-20 12:03:07,409 INFO L226 Difference]: Without dead ends: 179 [2024-09-20 12:03:07,409 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 345 SyntacticMatches, 42 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=272, Invalid=540, Unknown=0, NotChecked=0, Total=812 [2024-09-20 12:03:07,410 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:03:07,411 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 85 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:03:07,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-09-20 12:03:07,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 175. [2024-09-20 12:03:07,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 129 states have (on average 1.0155038759689923) internal successors, (131), 130 states have internal predecessors, (131), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-20 12:03:07,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2024-09-20 12:03:07,426 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 165 [2024-09-20 12:03:07,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:03:07,426 INFO L474 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2024-09-20 12:03:07,426 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 26 states have internal predecessors, (73), 21 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-20 12:03:07,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:07,426 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2024-09-20 12:03:07,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-09-20 12:03:07,427 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:03:07,427 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:03:07,439 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-09-20 12:03:07,627 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:03:07,628 INFO L399 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:03:07,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:07,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1782610379, now seen corresponding path program 39 times [2024-09-20 12:03:07,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:03:07,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058435282] [2024-09-20 12:03:07,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:03:07,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:03:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:08,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:03:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:08,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-20 12:03:08,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:08,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-20 12:03:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:08,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 12:03:08,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:08,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 12:03:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:08,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 12:03:08,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:08,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 12:03:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:08,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 12:03:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:08,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 12:03:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:08,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-20 12:03:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:08,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 12:03:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:08,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 12:03:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:08,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 12:03:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:08,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-20 12:03:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:08,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 12:03:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:08,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-20 12:03:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:08,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 12:03:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:08,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-20 12:03:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:08,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 12:03:08,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:08,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-20 12:03:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:08,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-20 12:03:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:08,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 592 proven. 268 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-20 12:03:08,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:03:08,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058435282] [2024-09-20 12:03:08,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058435282] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:03:08,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314426326] [2024-09-20 12:03:08,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 12:03:08,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:03:08,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:03:08,336 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:03:08,337 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-09-20 12:03:08,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2024-09-20 12:03:08,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:03:08,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-20 12:03:08,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:03:09,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-20 12:03:09,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:03:09,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-20 12:03:09,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314426326] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:03:09,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:03:09,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 68 [2024-09-20 12:03:09,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077081617] [2024-09-20 12:03:09,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:03:09,754 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-09-20 12:03:09,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:03:09,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-09-20 12:03:09,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1039, Invalid=3517, Unknown=0, NotChecked=0, Total=4556 [2024-09-20 12:03:09,756 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand has 68 states, 68 states have (on average 1.7352941176470589) internal successors, (118), 68 states have internal predecessors, (118), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-20 12:03:09,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:03:09,980 INFO L93 Difference]: Finished difference Result 247 states and 269 transitions. [2024-09-20 12:03:09,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-20 12:03:09,980 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.7352941176470589) internal successors, (118), 68 states have internal predecessors, (118), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 172 [2024-09-20 12:03:09,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:03:09,982 INFO L225 Difference]: With dead ends: 247 [2024-09-20 12:03:09,982 INFO L226 Difference]: Without dead ends: 176 [2024-09-20 12:03:09,983 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 323 SyntacticMatches, 41 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2900 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1039, Invalid=3517, Unknown=0, NotChecked=0, Total=4556 [2024-09-20 12:03:09,983 INFO L434 NwaCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 12:03:09,983 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 355 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 12:03:09,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-09-20 12:03:09,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-09-20 12:03:09,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 130 states have (on average 1.0153846153846153) internal successors, (132), 131 states have internal predecessors, (132), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-20 12:03:09,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 177 transitions. [2024-09-20 12:03:09,992 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 177 transitions. Word has length 172 [2024-09-20 12:03:09,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:03:09,993 INFO L474 AbstractCegarLoop]: Abstraction has 176 states and 177 transitions. [2024-09-20 12:03:09,993 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.7352941176470589) internal successors, (118), 68 states have internal predecessors, (118), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-20 12:03:09,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:09,993 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 177 transitions. [2024-09-20 12:03:09,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-09-20 12:03:09,994 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:03:09,994 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:03:10,011 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-09-20 12:03:10,194 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-09-20 12:03:10,195 INFO L399 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:03:10,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:10,195 INFO L85 PathProgramCache]: Analyzing trace with hash -651451689, now seen corresponding path program 40 times [2024-09-20 12:03:10,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:03:10,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541914228] [2024-09-20 12:03:10,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:03:10,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:03:10,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:10,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:03:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:10,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 12:03:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:10,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 12:03:10,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:10,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 12:03:10,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:10,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 12:03:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:10,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 12:03:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:10,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 12:03:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:10,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 12:03:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:10,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-20 12:03:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:10,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 12:03:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:10,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-20 12:03:10,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:10,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 12:03:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:10,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 12:03:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:10,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 12:03:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:10,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-20 12:03:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:10,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-20 12:03:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:10,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-20 12:03:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:10,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-20 12:03:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:10,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-20 12:03:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:10,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-20 12:03:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:10,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-20 12:03:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:10,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 250 proven. 631 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-20 12:03:10,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:03:10,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541914228] [2024-09-20 12:03:10,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541914228] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:03:10,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345674421] [2024-09-20 12:03:10,843 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 12:03:10,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:03:10,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:03:10,845 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:03:10,850 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-09-20 12:03:10,924 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 12:03:10,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:03:10,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-20 12:03:10,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:03:11,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 271 proven. 610 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-20 12:03:11,052 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:03:11,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 271 proven. 610 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-20 12:03:11,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345674421] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:03:11,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:03:11,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 29 [2024-09-20 12:03:11,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228879760] [2024-09-20 12:03:11,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:03:11,582 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-20 12:03:11,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:03:11,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-20 12:03:11,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=523, Unknown=0, NotChecked=0, Total=812 [2024-09-20 12:03:11,583 INFO L87 Difference]: Start difference. First operand 176 states and 177 transitions. Second operand has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 27 states have internal predecessors, (76), 22 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-20 12:03:11,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:03:11,741 INFO L93 Difference]: Finished difference Result 189 states and 191 transitions. [2024-09-20 12:03:11,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-20 12:03:11,742 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 27 states have internal predecessors, (76), 22 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 173 [2024-09-20 12:03:11,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:03:11,743 INFO L225 Difference]: With dead ends: 189 [2024-09-20 12:03:11,743 INFO L226 Difference]: Without dead ends: 187 [2024-09-20 12:03:11,744 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 364 SyntacticMatches, 42 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=295, Invalid=575, Unknown=0, NotChecked=0, Total=870 [2024-09-20 12:03:11,744 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:03:11,744 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 121 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:03:11,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-09-20 12:03:11,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2024-09-20 12:03:11,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 135 states have (on average 1.0148148148148148) internal successors, (137), 136 states have internal predecessors, (137), 24 states have call successors, (24), 24 states have call predecessors, (24), 23 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-20 12:03:11,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2024-09-20 12:03:11,758 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 173 [2024-09-20 12:03:11,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:03:11,758 INFO L474 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2024-09-20 12:03:11,758 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 27 states have internal predecessors, (76), 22 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-20 12:03:11,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:11,758 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2024-09-20 12:03:11,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-09-20 12:03:11,759 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:03:11,759 INFO L216 NwaCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:03:11,774 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2024-09-20 12:03:11,960 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,42 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:03:11,961 INFO L399 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:03:11,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:11,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1044759956, now seen corresponding path program 41 times [2024-09-20 12:03:11,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:03:11,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912962572] [2024-09-20 12:03:11,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:03:11,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:03:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:12,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:03:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:12,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 12:03:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:12,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 12:03:12,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:12,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 12:03:12,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:12,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 12:03:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:12,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 12:03:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:12,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 12:03:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:12,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 12:03:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:12,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-20 12:03:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:12,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 12:03:12,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:12,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-20 12:03:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:12,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 12:03:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:12,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 12:03:12,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:12,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 12:03:12,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:12,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-20 12:03:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:12,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-20 12:03:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:12,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-20 12:03:12,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:12,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-20 12:03:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:12,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-20 12:03:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:12,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-20 12:03:12,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:12,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-20 12:03:12,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:12,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-20 12:03:12,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:12,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 653 proven. 292 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-20 12:03:12,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:03:12,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912962572] [2024-09-20 12:03:12,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912962572] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:03:12,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202435344] [2024-09-20 12:03:12,960 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 12:03:12,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:03:12,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:03:12,962 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:03:12,965 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-09-20 12:03:13,060 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-09-20 12:03:13,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:03:13,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-20 12:03:13,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:03:14,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-20 12:03:14,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:03:14,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-20 12:03:14,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202435344] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:03:14,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:03:14,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 71 [2024-09-20 12:03:14,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415240366] [2024-09-20 12:03:14,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:03:14,823 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-09-20 12:03:14,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:03:14,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-09-20 12:03:14,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1132, Invalid=3838, Unknown=0, NotChecked=0, Total=4970 [2024-09-20 12:03:14,825 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand has 71 states, 71 states have (on average 1.732394366197183) internal successors, (123), 71 states have internal predecessors, (123), 45 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-20 12:03:15,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:03:15,146 INFO L93 Difference]: Finished difference Result 258 states and 281 transitions. [2024-09-20 12:03:15,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-20 12:03:15,146 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.732394366197183) internal successors, (123), 71 states have internal predecessors, (123), 45 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 180 [2024-09-20 12:03:15,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:03:15,148 INFO L225 Difference]: With dead ends: 258 [2024-09-20 12:03:15,148 INFO L226 Difference]: Without dead ends: 184 [2024-09-20 12:03:15,149 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 338 SyntacticMatches, 43 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3171 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1132, Invalid=3838, Unknown=0, NotChecked=0, Total=4970 [2024-09-20 12:03:15,150 INFO L434 NwaCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 12:03:15,150 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 456 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 12:03:15,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-09-20 12:03:15,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2024-09-20 12:03:15,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 136 states have (on average 1.0147058823529411) internal successors, (138), 137 states have internal predecessors, (138), 24 states have call successors, (24), 24 states have call predecessors, (24), 23 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-20 12:03:15,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 185 transitions. [2024-09-20 12:03:15,164 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 185 transitions. Word has length 180 [2024-09-20 12:03:15,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:03:15,164 INFO L474 AbstractCegarLoop]: Abstraction has 184 states and 185 transitions. [2024-09-20 12:03:15,164 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.732394366197183) internal successors, (123), 71 states have internal predecessors, (123), 45 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-20 12:03:15,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:15,165 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 185 transitions. [2024-09-20 12:03:15,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-09-20 12:03:15,165 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:03:15,166 INFO L216 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:03:15,182 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-09-20 12:03:15,369 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:03:15,370 INFO L399 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:03:15,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:15,371 INFO L85 PathProgramCache]: Analyzing trace with hash -22964360, now seen corresponding path program 42 times [2024-09-20 12:03:15,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:03:15,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475264648] [2024-09-20 12:03:15,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:03:15,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:03:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:15,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:03:15,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:15,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-20 12:03:15,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:15,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 12:03:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:15,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-20 12:03:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:15,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 12:03:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:15,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-20 12:03:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:15,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 12:03:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:15,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-20 12:03:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:15,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 12:03:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:15,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-20 12:03:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:15,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 12:03:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:15,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-20 12:03:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:15,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 12:03:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:15,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-20 12:03:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:15,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 12:03:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:15,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-20 12:03:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:15,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-20 12:03:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:15,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-20 12:03:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:15,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-20 12:03:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:15,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-20 12:03:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:15,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-20 12:03:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:15,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-20 12:03:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:15,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 273 proven. 694 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-20 12:03:15,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:03:15,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475264648] [2024-09-20 12:03:15,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475264648] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:03:15,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97718135] [2024-09-20 12:03:15,987 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 12:03:15,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:03:15,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:03:15,989 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:03:15,991 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-09-20 12:03:16,088 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2024-09-20 12:03:16,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:03:16,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-20 12:03:16,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:03:16,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 295 proven. 672 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-20 12:03:16,220 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:03:16,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 295 proven. 672 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-09-20 12:03:16,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97718135] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:03:16,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:03:16,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 30 [2024-09-20 12:03:16,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369493214] [2024-09-20 12:03:16,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:03:16,803 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-20 12:03:16,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:03:16,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-20 12:03:16,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=557, Unknown=0, NotChecked=0, Total=870 [2024-09-20 12:03:16,817 INFO L87 Difference]: Start difference. First operand 184 states and 185 transitions. Second operand has 30 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 28 states have internal predecessors, (79), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-20 12:03:16,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:03:16,978 INFO L93 Difference]: Finished difference Result 197 states and 199 transitions. [2024-09-20 12:03:16,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-20 12:03:16,978 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 28 states have internal predecessors, (79), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 181 [2024-09-20 12:03:16,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:03:16,980 INFO L225 Difference]: With dead ends: 197 [2024-09-20 12:03:16,980 INFO L226 Difference]: Without dead ends: 195 [2024-09-20 12:03:16,980 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 381 SyntacticMatches, 44 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=319, Invalid=611, Unknown=0, NotChecked=0, Total=930 [2024-09-20 12:03:16,981 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:03:16,984 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 91 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:03:16,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-09-20 12:03:17,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 191. [2024-09-20 12:03:17,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 141 states have (on average 1.0141843971631206) internal successors, (143), 142 states have internal predecessors, (143), 25 states have call successors, (25), 25 states have call predecessors, (25), 24 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-20 12:03:17,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2024-09-20 12:03:17,010 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 181 [2024-09-20 12:03:17,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:03:17,011 INFO L474 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2024-09-20 12:03:17,011 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 28 states have internal predecessors, (79), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-20 12:03:17,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:17,011 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2024-09-20 12:03:17,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-09-20 12:03:17,012 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:03:17,012 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:03:17,049 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-09-20 12:03:17,217 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-09-20 12:03:17,217 INFO L399 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:03:17,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:17,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1913061035, now seen corresponding path program 43 times [2024-09-20 12:03:17,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:03:17,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581379471] [2024-09-20 12:03:17,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:03:17,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:03:17,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:18,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:03:18,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:18,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-09-20 12:03:18,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:18,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 12:03:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:18,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-20 12:03:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:18,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 12:03:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:18,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-20 12:03:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:18,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 12:03:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:18,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-20 12:03:18,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:18,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 12:03:18,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:18,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-20 12:03:18,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:18,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 12:03:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:18,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-20 12:03:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:18,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 12:03:18,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:18,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-20 12:03:18,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:18,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 12:03:18,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:18,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-20 12:03:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:18,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-20 12:03:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:18,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-20 12:03:18,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:18,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-20 12:03:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:18,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-20 12:03:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:18,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-20 12:03:18,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:18,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-20 12:03:18,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:18,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-20 12:03:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:18,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 717 proven. 317 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-20 12:03:18,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:03:18,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581379471] [2024-09-20 12:03:18,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581379471] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:03:18,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113142557] [2024-09-20 12:03:18,332 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 12:03:18,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:03:18,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:03:18,333 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:03:18,335 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-09-20 12:03:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:18,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-20 12:03:18,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:03:19,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-20 12:03:19,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:03:20,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-20 12:03:20,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113142557] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:03:20,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:03:20,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 74 [2024-09-20 12:03:20,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152408724] [2024-09-20 12:03:20,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:03:20,324 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-09-20 12:03:20,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:03:20,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-09-20 12:03:20,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1229, Invalid=4173, Unknown=0, NotChecked=0, Total=5402 [2024-09-20 12:03:20,327 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand has 74 states, 74 states have (on average 1.7297297297297298) internal successors, (128), 74 states have internal predecessors, (128), 47 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-20 12:03:20,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:03:20,675 INFO L93 Difference]: Finished difference Result 269 states and 293 transitions. [2024-09-20 12:03:20,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-09-20 12:03:20,675 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.7297297297297298) internal successors, (128), 74 states have internal predecessors, (128), 47 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 188 [2024-09-20 12:03:20,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:03:20,677 INFO L225 Difference]: With dead ends: 269 [2024-09-20 12:03:20,677 INFO L226 Difference]: Without dead ends: 192 [2024-09-20 12:03:20,678 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 353 SyntacticMatches, 45 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3454 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1229, Invalid=4173, Unknown=0, NotChecked=0, Total=5402 [2024-09-20 12:03:20,679 INFO L434 NwaCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 12:03:20,679 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 494 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 12:03:20,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-09-20 12:03:20,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2024-09-20 12:03:20,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 142 states have (on average 1.0140845070422535) internal successors, (144), 143 states have internal predecessors, (144), 25 states have call successors, (25), 25 states have call predecessors, (25), 24 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-20 12:03:20,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 193 transitions. [2024-09-20 12:03:20,693 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 193 transitions. Word has length 188 [2024-09-20 12:03:20,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:03:20,693 INFO L474 AbstractCegarLoop]: Abstraction has 192 states and 193 transitions. [2024-09-20 12:03:20,693 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.7297297297297298) internal successors, (128), 74 states have internal predecessors, (128), 47 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-20 12:03:20,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:20,694 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 193 transitions. [2024-09-20 12:03:20,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-09-20 12:03:20,694 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:03:20,695 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:03:20,711 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-09-20 12:03:20,897 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-09-20 12:03:20,897 INFO L399 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:03:20,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:20,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1485402185, now seen corresponding path program 44 times [2024-09-20 12:03:20,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:03:20,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362847605] [2024-09-20 12:03:20,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:03:20,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:03:20,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:21,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:03:21,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:21,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-20 12:03:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:21,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 12:03:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:21,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 12:03:21,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:21,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-20 12:03:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:21,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 12:03:21,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:21,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-20 12:03:21,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:21,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 12:03:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:21,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-20 12:03:21,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:21,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 12:03:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:21,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-20 12:03:21,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:21,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 12:03:21,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:21,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-20 12:03:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:21,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 12:03:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:21,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-20 12:03:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:21,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-20 12:03:21,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:21,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-20 12:03:21,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:21,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-20 12:03:21,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:21,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-20 12:03:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:21,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-20 12:03:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:21,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-20 12:03:21,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:21,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-20 12:03:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:21,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-20 12:03:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:21,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 297 proven. 760 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-20 12:03:21,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:03:21,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362847605] [2024-09-20 12:03:21,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362847605] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:03:21,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241288386] [2024-09-20 12:03:21,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 12:03:21,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:03:21,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:03:21,591 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:03:21,593 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-09-20 12:03:21,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 12:03:21,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:03:21,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-09-20 12:03:21,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:03:21,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 320 proven. 737 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-20 12:03:21,827 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:03:22,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 320 proven. 737 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-20 12:03:22,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241288386] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:03:22,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:03:22,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 31 [2024-09-20 12:03:22,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686614429] [2024-09-20 12:03:22,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:03:22,501 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-20 12:03:22,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:03:22,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-20 12:03:22,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=592, Unknown=0, NotChecked=0, Total=930 [2024-09-20 12:03:22,502 INFO L87 Difference]: Start difference. First operand 192 states and 193 transitions. Second operand has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 29 states have internal predecessors, (82), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-20 12:03:22,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:03:22,674 INFO L93 Difference]: Finished difference Result 205 states and 207 transitions. [2024-09-20 12:03:22,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-09-20 12:03:22,674 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 29 states have internal predecessors, (82), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 189 [2024-09-20 12:03:22,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:03:22,676 INFO L225 Difference]: With dead ends: 205 [2024-09-20 12:03:22,676 INFO L226 Difference]: Without dead ends: 203 [2024-09-20 12:03:22,677 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 396 SyntacticMatches, 48 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=344, Invalid=648, Unknown=0, NotChecked=0, Total=992 [2024-09-20 12:03:22,677 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:03:22,679 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 81 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:03:22,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-09-20 12:03:22,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 199. [2024-09-20 12:03:22,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 147 states have (on average 1.0136054421768708) internal successors, (149), 148 states have internal predecessors, (149), 26 states have call successors, (26), 26 states have call predecessors, (26), 25 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-20 12:03:22,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2024-09-20 12:03:22,703 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 189 [2024-09-20 12:03:22,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:03:22,703 INFO L474 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2024-09-20 12:03:22,703 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 29 states have internal predecessors, (82), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-09-20 12:03:22,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:22,704 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2024-09-20 12:03:22,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-09-20 12:03:22,705 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:03:22,705 INFO L216 NwaCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:03:22,721 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-09-20 12:03:22,906 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,46 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:03:22,906 INFO L399 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:03:22,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:22,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1500180084, now seen corresponding path program 45 times [2024-09-20 12:03:22,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:03:22,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889470910] [2024-09-20 12:03:22,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:03:22,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:03:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:24,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:03:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:24,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-20 12:03:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:24,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 12:03:24,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:24,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 12:03:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:24,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-20 12:03:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:24,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 12:03:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:24,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-20 12:03:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:24,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 12:03:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:24,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-20 12:03:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:24,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 12:03:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:24,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-20 12:03:24,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:24,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 12:03:24,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:24,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-20 12:03:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:24,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 12:03:24,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:24,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-20 12:03:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:24,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-20 12:03:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:24,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-20 12:03:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:24,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-20 12:03:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:24,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-20 12:03:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:24,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-20 12:03:24,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:24,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-20 12:03:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:24,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-20 12:03:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:24,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-20 12:03:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:24,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-20 12:03:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:24,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 784 proven. 343 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-20 12:03:24,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:03:24,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889470910] [2024-09-20 12:03:24,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889470910] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:03:24,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900273308] [2024-09-20 12:03:24,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 12:03:24,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:03:24,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:03:24,080 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:03:24,081 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-09-20 12:03:24,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2024-09-20 12:03:24,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:03:24,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-20 12:03:24,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:03:25,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-20 12:03:25,321 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:03:26,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-20 12:03:26,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900273308] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:03:26,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:03:26,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 77 [2024-09-20 12:03:26,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477219012] [2024-09-20 12:03:26,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:03:26,249 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-09-20 12:03:26,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:03:26,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-09-20 12:03:26,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1330, Invalid=4522, Unknown=0, NotChecked=0, Total=5852 [2024-09-20 12:03:26,251 INFO L87 Difference]: Start difference. First operand 199 states and 200 transitions. Second operand has 77 states, 77 states have (on average 1.7272727272727273) internal successors, (133), 77 states have internal predecessors, (133), 49 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-20 12:03:26,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:03:26,589 INFO L93 Difference]: Finished difference Result 280 states and 305 transitions. [2024-09-20 12:03:26,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-09-20 12:03:26,590 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 1.7272727272727273) internal successors, (133), 77 states have internal predecessors, (133), 49 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Word has length 196 [2024-09-20 12:03:26,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:03:26,592 INFO L225 Difference]: With dead ends: 280 [2024-09-20 12:03:26,592 INFO L226 Difference]: Without dead ends: 200 [2024-09-20 12:03:26,593 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 368 SyntacticMatches, 47 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3749 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1330, Invalid=4522, Unknown=0, NotChecked=0, Total=5852 [2024-09-20 12:03:26,594 INFO L434 NwaCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 12:03:26,594 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 497 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 12:03:26,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-09-20 12:03:26,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2024-09-20 12:03:26,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 148 states have (on average 1.0135135135135136) internal successors, (150), 149 states have internal predecessors, (150), 26 states have call successors, (26), 26 states have call predecessors, (26), 25 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-20 12:03:26,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 201 transitions. [2024-09-20 12:03:26,609 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 201 transitions. Word has length 196 [2024-09-20 12:03:26,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:03:26,609 INFO L474 AbstractCegarLoop]: Abstraction has 200 states and 201 transitions. [2024-09-20 12:03:26,609 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 1.7272727272727273) internal successors, (133), 77 states have internal predecessors, (133), 49 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-09-20 12:03:26,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:26,610 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 201 transitions. [2024-09-20 12:03:26,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-09-20 12:03:26,611 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:03:26,611 INFO L216 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:03:26,627 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2024-09-20 12:03:26,815 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,47 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:03:26,816 INFO L399 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:03:26,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:26,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1290217832, now seen corresponding path program 46 times [2024-09-20 12:03:26,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:03:26,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199424053] [2024-09-20 12:03:26,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:03:26,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:03:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:27,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:03:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:27,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-20 12:03:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:27,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-20 12:03:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:27,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 12:03:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:27,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 12:03:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:27,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-20 12:03:27,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:27,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 12:03:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:27,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-20 12:03:27,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:27,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 12:03:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:27,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-20 12:03:27,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:27,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 12:03:27,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:27,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-20 12:03:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:27,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 12:03:27,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:27,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-20 12:03:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:27,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 12:03:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:27,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-20 12:03:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:27,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-20 12:03:27,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:27,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-20 12:03:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:27,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-20 12:03:27,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:27,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-20 12:03:27,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:27,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-20 12:03:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:27,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-20 12:03:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:27,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-20 12:03:27,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:27,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-20 12:03:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:27,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 322 proven. 829 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-20 12:03:27,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:03:27,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199424053] [2024-09-20 12:03:27,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199424053] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:03:27,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284288363] [2024-09-20 12:03:27,545 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 12:03:27,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:03:27,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:03:27,547 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:03:27,549 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-09-20 12:03:27,634 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 12:03:27,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:03:27,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-20 12:03:27,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:03:27,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 346 proven. 805 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-20 12:03:27,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:03:28,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 346 proven. 805 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-20 12:03:28,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284288363] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:03:28,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:03:28,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 32 [2024-09-20 12:03:28,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556643042] [2024-09-20 12:03:28,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:03:28,461 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-09-20 12:03:28,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:03:28,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-09-20 12:03:28,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=628, Unknown=0, NotChecked=0, Total=992 [2024-09-20 12:03:28,462 INFO L87 Difference]: Start difference. First operand 200 states and 201 transitions. Second operand has 32 states, 32 states have (on average 2.65625) internal successors, (85), 30 states have internal predecessors, (85), 25 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-20 12:03:28,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:03:28,632 INFO L93 Difference]: Finished difference Result 213 states and 215 transitions. [2024-09-20 12:03:28,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-09-20 12:03:28,632 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.65625) internal successors, (85), 30 states have internal predecessors, (85), 25 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 197 [2024-09-20 12:03:28,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:03:28,634 INFO L225 Difference]: With dead ends: 213 [2024-09-20 12:03:28,634 INFO L226 Difference]: Without dead ends: 211 [2024-09-20 12:03:28,634 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 415 SyntacticMatches, 48 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=370, Invalid=686, Unknown=0, NotChecked=0, Total=1056 [2024-09-20 12:03:28,635 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:03:28,635 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 100 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:03:28,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-09-20 12:03:28,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 207. [2024-09-20 12:03:28,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 153 states have (on average 1.0130718954248366) internal successors, (155), 154 states have internal predecessors, (155), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-20 12:03:28,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2024-09-20 12:03:28,650 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 197 [2024-09-20 12:03:28,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:03:28,650 INFO L474 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2024-09-20 12:03:28,650 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.65625) internal successors, (85), 30 states have internal predecessors, (85), 25 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-20 12:03:28,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:28,651 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2024-09-20 12:03:28,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-09-20 12:03:28,651 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:03:28,652 INFO L216 NwaCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:03:28,668 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2024-09-20 12:03:28,855 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-09-20 12:03:28,856 INFO L399 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:03:28,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:28,856 INFO L85 PathProgramCache]: Analyzing trace with hash 2145418123, now seen corresponding path program 47 times [2024-09-20 12:03:28,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:03:28,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239393503] [2024-09-20 12:03:28,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:03:28,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:03:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:30,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:03:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:30,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-20 12:03:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:30,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-20 12:03:30,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:30,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 12:03:30,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:30,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 12:03:30,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:30,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-20 12:03:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:30,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 12:03:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:30,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-20 12:03:30,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:30,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 12:03:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:30,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-20 12:03:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:30,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 12:03:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:30,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-20 12:03:30,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:30,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 12:03:30,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:30,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-20 12:03:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:30,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 12:03:30,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:30,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-20 12:03:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:30,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-20 12:03:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:30,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-20 12:03:30,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:30,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-20 12:03:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:30,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-20 12:03:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:30,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-20 12:03:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:30,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-20 12:03:30,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:30,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-20 12:03:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:30,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-20 12:03:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:30,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-20 12:03:30,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:30,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 854 proven. 370 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-20 12:03:30,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:03:30,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239393503] [2024-09-20 12:03:30,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239393503] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:03:30,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603381996] [2024-09-20 12:03:30,113 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 12:03:30,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:03:30,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:03:30,115 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:03:30,116 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-09-20 12:03:30,225 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2024-09-20 12:03:30,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:03:30,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-09-20 12:03:30,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:03:31,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-20 12:03:31,432 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:03:32,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-20 12:03:32,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603381996] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:03:32,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:03:32,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 80 [2024-09-20 12:03:32,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232093110] [2024-09-20 12:03:32,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:03:32,418 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-09-20 12:03:32,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:03:32,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-09-20 12:03:32,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1435, Invalid=4885, Unknown=0, NotChecked=0, Total=6320 [2024-09-20 12:03:32,420 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand has 80 states, 80 states have (on average 1.725) internal successors, (138), 80 states have internal predecessors, (138), 51 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-20 12:03:32,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:03:32,781 INFO L93 Difference]: Finished difference Result 291 states and 317 transitions. [2024-09-20 12:03:32,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-09-20 12:03:32,782 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.725) internal successors, (138), 80 states have internal predecessors, (138), 51 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Word has length 204 [2024-09-20 12:03:32,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:03:32,784 INFO L225 Difference]: With dead ends: 291 [2024-09-20 12:03:32,784 INFO L226 Difference]: Without dead ends: 208 [2024-09-20 12:03:32,786 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 383 SyntacticMatches, 49 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4056 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1435, Invalid=4885, Unknown=0, NotChecked=0, Total=6320 [2024-09-20 12:03:32,786 INFO L434 NwaCegarLoop]: 58 mSDtfsCounter, 0 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 12:03:32,786 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 386 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 12:03:32,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-09-20 12:03:32,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2024-09-20 12:03:32,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 154 states have (on average 1.0129870129870129) internal successors, (156), 155 states have internal predecessors, (156), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-20 12:03:32,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 209 transitions. [2024-09-20 12:03:32,804 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 209 transitions. Word has length 204 [2024-09-20 12:03:32,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:03:32,804 INFO L474 AbstractCegarLoop]: Abstraction has 208 states and 209 transitions. [2024-09-20 12:03:32,805 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 1.725) internal successors, (138), 80 states have internal predecessors, (138), 51 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-20 12:03:32,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:32,805 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 209 transitions. [2024-09-20 12:03:32,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-09-20 12:03:32,806 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:03:32,806 INFO L216 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:03:32,825 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2024-09-20 12:03:33,010 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-09-20 12:03:33,011 INFO L399 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:03:33,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:33,012 INFO L85 PathProgramCache]: Analyzing trace with hash -167480169, now seen corresponding path program 48 times [2024-09-20 12:03:33,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:03:33,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787568678] [2024-09-20 12:03:33,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:03:33,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:03:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:33,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:03:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:33,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-20 12:03:33,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:33,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 12:03:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:33,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-20 12:03:33,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:33,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-20 12:03:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:33,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 12:03:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:33,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 12:03:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:33,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 12:03:33,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:33,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-20 12:03:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:33,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 12:03:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:33,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-20 12:03:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:33,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 12:03:33,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:33,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-20 12:03:33,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:33,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 12:03:33,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:33,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-20 12:03:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:33,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 12:03:33,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:33,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-20 12:03:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:33,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-20 12:03:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:33,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-20 12:03:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:33,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-20 12:03:33,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:33,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-20 12:03:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:33,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 12:03:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:33,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-20 12:03:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:33,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-20 12:03:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:33,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-20 12:03:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:33,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 348 proven. 901 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-20 12:03:33,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:03:33,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787568678] [2024-09-20 12:03:33,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787568678] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:03:33,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068408734] [2024-09-20 12:03:33,782 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 12:03:33,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:03:33,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:03:33,784 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:03:33,786 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-09-20 12:03:33,906 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2024-09-20 12:03:33,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:03:33,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-20 12:03:33,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:03:34,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 373 proven. 876 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-20 12:03:34,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:03:34,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 373 proven. 876 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-20 12:03:34,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068408734] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:03:34,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:03:34,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 33 [2024-09-20 12:03:34,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159755198] [2024-09-20 12:03:34,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:03:34,769 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-09-20 12:03:34,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:03:34,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-09-20 12:03:34,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=665, Unknown=0, NotChecked=0, Total=1056 [2024-09-20 12:03:34,770 INFO L87 Difference]: Start difference. First operand 208 states and 209 transitions. Second operand has 33 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 31 states have internal predecessors, (88), 26 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-20 12:03:34,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:03:34,933 INFO L93 Difference]: Finished difference Result 221 states and 223 transitions. [2024-09-20 12:03:34,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-09-20 12:03:34,934 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 31 states have internal predecessors, (88), 26 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 205 [2024-09-20 12:03:34,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:03:34,936 INFO L225 Difference]: With dead ends: 221 [2024-09-20 12:03:34,936 INFO L226 Difference]: Without dead ends: 219 [2024-09-20 12:03:34,936 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 432 SyntacticMatches, 50 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=397, Invalid=725, Unknown=0, NotChecked=0, Total=1122 [2024-09-20 12:03:34,937 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:03:34,937 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 111 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:03:34,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-09-20 12:03:34,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 215. [2024-09-20 12:03:34,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 159 states have (on average 1.0125786163522013) internal successors, (161), 160 states have internal predecessors, (161), 28 states have call successors, (28), 28 states have call predecessors, (28), 27 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-20 12:03:34,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 216 transitions. [2024-09-20 12:03:34,953 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 216 transitions. Word has length 205 [2024-09-20 12:03:34,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:03:34,954 INFO L474 AbstractCegarLoop]: Abstraction has 215 states and 216 transitions. [2024-09-20 12:03:34,954 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 31 states have internal predecessors, (88), 26 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-20 12:03:34,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:34,955 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 216 transitions. [2024-09-20 12:03:34,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-09-20 12:03:34,956 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:03:34,956 INFO L216 NwaCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:03:34,978 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2024-09-20 12:03:35,160 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,50 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:03:35,162 INFO L399 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:03:35,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:35,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1067061076, now seen corresponding path program 49 times [2024-09-20 12:03:35,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:03:35,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745617993] [2024-09-20 12:03:35,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:03:35,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:03:35,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:36,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:03:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:36,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-20 12:03:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:36,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 12:03:36,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:36,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-20 12:03:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:36,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-20 12:03:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:36,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 12:03:36,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:36,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 12:03:36,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:36,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 12:03:36,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:36,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-20 12:03:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:36,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 12:03:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:36,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-20 12:03:36,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:36,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 12:03:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:36,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-20 12:03:36,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:36,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 12:03:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:36,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-20 12:03:36,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:36,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 12:03:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:36,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-20 12:03:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:36,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-20 12:03:36,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:36,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-20 12:03:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:36,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-20 12:03:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:36,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-20 12:03:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:36,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 12:03:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:36,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-20 12:03:36,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:36,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-20 12:03:36,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:36,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-20 12:03:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:36,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-20 12:03:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:36,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 927 proven. 398 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-20 12:03:36,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:03:36,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745617993] [2024-09-20 12:03:36,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745617993] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:03:36,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864641339] [2024-09-20 12:03:36,539 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 12:03:36,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:03:36,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:03:36,541 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:03:36,542 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-09-20 12:03:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:36,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-09-20 12:03:36,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:03:37,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-20 12:03:37,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:03:38,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-20 12:03:38,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864641339] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:03:38,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:03:38,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 83 [2024-09-20 12:03:38,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850738795] [2024-09-20 12:03:38,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:03:38,961 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-09-20 12:03:38,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:03:38,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-09-20 12:03:38,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1544, Invalid=5262, Unknown=0, NotChecked=0, Total=6806 [2024-09-20 12:03:38,964 INFO L87 Difference]: Start difference. First operand 215 states and 216 transitions. Second operand has 83 states, 83 states have (on average 1.7228915662650603) internal successors, (143), 83 states have internal predecessors, (143), 53 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-09-20 12:03:39,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:03:39,353 INFO L93 Difference]: Finished difference Result 302 states and 329 transitions. [2024-09-20 12:03:39,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-09-20 12:03:39,355 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 1.7228915662650603) internal successors, (143), 83 states have internal predecessors, (143), 53 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Word has length 212 [2024-09-20 12:03:39,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:03:39,356 INFO L225 Difference]: With dead ends: 302 [2024-09-20 12:03:39,356 INFO L226 Difference]: Without dead ends: 216 [2024-09-20 12:03:39,357 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 398 SyntacticMatches, 51 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4375 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1544, Invalid=5262, Unknown=0, NotChecked=0, Total=6806 [2024-09-20 12:03:39,357 INFO L434 NwaCegarLoop]: 60 mSDtfsCounter, 0 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 12:03:39,358 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 399 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 12:03:39,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-09-20 12:03:39,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2024-09-20 12:03:39,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 160 states have (on average 1.0125) internal successors, (162), 161 states have internal predecessors, (162), 28 states have call successors, (28), 28 states have call predecessors, (28), 27 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-20 12:03:39,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 217 transitions. [2024-09-20 12:03:39,373 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 217 transitions. Word has length 212 [2024-09-20 12:03:39,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:03:39,373 INFO L474 AbstractCegarLoop]: Abstraction has 216 states and 217 transitions. [2024-09-20 12:03:39,374 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 1.7228915662650603) internal successors, (143), 83 states have internal predecessors, (143), 53 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-09-20 12:03:39,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:39,374 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 217 transitions. [2024-09-20 12:03:39,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-09-20 12:03:39,375 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:03:39,375 INFO L216 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:03:39,392 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-09-20 12:03:39,575 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2024-09-20 12:03:39,576 INFO L399 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:03:39,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:39,576 INFO L85 PathProgramCache]: Analyzing trace with hash -424272456, now seen corresponding path program 50 times [2024-09-20 12:03:39,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:03:39,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110926617] [2024-09-20 12:03:39,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:03:39,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:03:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:40,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:03:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:40,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 12:03:40,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:40,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 12:03:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:40,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-20 12:03:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:40,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 12:03:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:40,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 12:03:40,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:40,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 12:03:40,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:40,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 12:03:40,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:40,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 12:03:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:40,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 12:03:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:40,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 12:03:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:40,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-20 12:03:40,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:40,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 12:03:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:40,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-20 12:03:40,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:40,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 12:03:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:40,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-20 12:03:40,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:40,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 12:03:40,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:40,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-20 12:03:40,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:40,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 12:03:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:40,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-20 12:03:40,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:40,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-20 12:03:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:40,335 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-20 12:03:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:40,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-20 12:03:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:40,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-20 12:03:40,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:40,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-20 12:03:40,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:40,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-20 12:03:40,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:40,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 375 proven. 976 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-20 12:03:40,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:03:40,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110926617] [2024-09-20 12:03:40,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110926617] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:03:40,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97597533] [2024-09-20 12:03:40,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 12:03:40,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:03:40,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:03:40,366 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:03:40,367 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-09-20 12:03:40,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 12:03:40,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:03:40,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-09-20 12:03:40,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:03:40,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 401 proven. 950 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-20 12:03:40,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:03:41,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 401 proven. 950 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-20 12:03:41,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97597533] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:03:41,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:03:41,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 34 [2024-09-20 12:03:41,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697385138] [2024-09-20 12:03:41,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:03:41,258 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-20 12:03:41,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:03:41,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-20 12:03:41,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=703, Unknown=0, NotChecked=0, Total=1122 [2024-09-20 12:03:41,260 INFO L87 Difference]: Start difference. First operand 216 states and 217 transitions. Second operand has 34 states, 34 states have (on average 2.676470588235294) internal successors, (91), 32 states have internal predecessors, (91), 27 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-20 12:03:41,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:03:41,457 INFO L93 Difference]: Finished difference Result 229 states and 231 transitions. [2024-09-20 12:03:41,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-20 12:03:41,458 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.676470588235294) internal successors, (91), 32 states have internal predecessors, (91), 27 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 213 [2024-09-20 12:03:41,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:03:41,460 INFO L225 Difference]: With dead ends: 229 [2024-09-20 12:03:41,460 INFO L226 Difference]: Without dead ends: 227 [2024-09-20 12:03:41,460 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 447 SyntacticMatches, 54 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=425, Invalid=765, Unknown=0, NotChecked=0, Total=1190 [2024-09-20 12:03:41,462 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:03:41,463 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 91 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:03:41,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-09-20 12:03:41,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 223. [2024-09-20 12:03:41,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 165 states have (on average 1.0121212121212122) internal successors, (167), 166 states have internal predecessors, (167), 29 states have call successors, (29), 29 states have call predecessors, (29), 28 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-20 12:03:41,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 224 transitions. [2024-09-20 12:03:41,498 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 224 transitions. Word has length 213 [2024-09-20 12:03:41,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:03:41,502 INFO L474 AbstractCegarLoop]: Abstraction has 223 states and 224 transitions. [2024-09-20 12:03:41,503 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.676470588235294) internal successors, (91), 32 states have internal predecessors, (91), 27 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-20 12:03:41,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:41,503 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 224 transitions. [2024-09-20 12:03:41,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-09-20 12:03:41,504 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:03:41,504 INFO L216 NwaCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:03:41,521 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-09-20 12:03:41,704 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,52 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:03:41,705 INFO L399 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:03:41,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:41,705 INFO L85 PathProgramCache]: Analyzing trace with hash -516231061, now seen corresponding path program 51 times [2024-09-20 12:03:41,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:03:41,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900754889] [2024-09-20 12:03:41,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:03:41,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:03:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:43,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:03:43,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:43,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-20 12:03:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:43,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 12:03:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:43,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-20 12:03:43,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:43,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 12:03:43,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:43,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 12:03:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:43,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 12:03:43,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:43,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 12:03:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:43,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 12:03:43,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:43,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 12:03:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:43,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 12:03:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:43,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-20 12:03:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:43,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 12:03:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:43,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-20 12:03:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:43,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 12:03:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:43,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-20 12:03:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:43,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 12:03:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:43,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-20 12:03:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:43,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 12:03:43,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:43,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-20 12:03:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:43,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-20 12:03:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:43,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-20 12:03:43,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:43,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-20 12:03:43,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:43,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-20 12:03:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:43,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-20 12:03:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:43,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-20 12:03:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:43,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-20 12:03:43,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:43,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1003 proven. 427 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-20 12:03:43,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:03:43,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900754889] [2024-09-20 12:03:43,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900754889] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:03:43,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445420375] [2024-09-20 12:03:43,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 12:03:43,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:03:43,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:03:43,120 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:03:43,121 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-09-20 12:03:43,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2024-09-20 12:03:43,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:03:43,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-20 12:03:43,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:03:44,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-20 12:03:44,625 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:03:45,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-20 12:03:45,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445420375] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:03:45,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:03:45,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57, 57] total 86 [2024-09-20 12:03:45,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140881804] [2024-09-20 12:03:45,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:03:45,618 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-09-20 12:03:45,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:03:45,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-09-20 12:03:45,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1657, Invalid=5653, Unknown=0, NotChecked=0, Total=7310 [2024-09-20 12:03:45,620 INFO L87 Difference]: Start difference. First operand 223 states and 224 transitions. Second operand has 86 states, 86 states have (on average 1.7209302325581395) internal successors, (148), 86 states have internal predecessors, (148), 55 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-09-20 12:03:46,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:03:46,067 INFO L93 Difference]: Finished difference Result 313 states and 341 transitions. [2024-09-20 12:03:46,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-09-20 12:03:46,071 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 1.7209302325581395) internal successors, (148), 86 states have internal predecessors, (148), 55 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Word has length 220 [2024-09-20 12:03:46,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:03:46,073 INFO L225 Difference]: With dead ends: 313 [2024-09-20 12:03:46,073 INFO L226 Difference]: Without dead ends: 224 [2024-09-20 12:03:46,078 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 413 SyntacticMatches, 53 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4706 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1657, Invalid=5653, Unknown=0, NotChecked=0, Total=7310 [2024-09-20 12:03:46,079 INFO L434 NwaCegarLoop]: 62 mSDtfsCounter, 0 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2024-09-20 12:03:46,079 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 412 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 12:03:46,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-09-20 12:03:46,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2024-09-20 12:03:46,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 166 states have (on average 1.0120481927710843) internal successors, (168), 167 states have internal predecessors, (168), 29 states have call successors, (29), 29 states have call predecessors, (29), 28 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-20 12:03:46,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 225 transitions. [2024-09-20 12:03:46,116 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 225 transitions. Word has length 220 [2024-09-20 12:03:46,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:03:46,117 INFO L474 AbstractCegarLoop]: Abstraction has 224 states and 225 transitions. [2024-09-20 12:03:46,117 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 1.7209302325581395) internal successors, (148), 86 states have internal predecessors, (148), 55 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-09-20 12:03:46,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:46,117 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 225 transitions. [2024-09-20 12:03:46,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-09-20 12:03:46,122 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:03:46,122 INFO L216 NwaCegarLoop]: trace histogram [27, 27, 27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:03:46,140 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2024-09-20 12:03:46,323 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,53 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:03:46,324 INFO L399 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:03:46,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:46,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1304211081, now seen corresponding path program 52 times [2024-09-20 12:03:46,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:03:46,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626816625] [2024-09-20 12:03:46,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:03:46,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:03:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:47,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:03:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:47,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-20 12:03:47,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:47,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 12:03:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:47,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 12:03:47,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:47,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 12:03:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:47,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 12:03:47,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:47,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 12:03:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:47,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 12:03:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:47,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-20 12:03:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:47,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 12:03:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:47,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 12:03:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:47,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 12:03:47,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:47,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-20 12:03:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:47,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 12:03:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:47,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-20 12:03:47,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:47,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 12:03:47,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:47,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-20 12:03:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:47,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 12:03:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:47,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-20 12:03:47,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:47,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-20 12:03:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:47,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-20 12:03:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:47,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-20 12:03:47,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:47,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-20 12:03:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:47,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-20 12:03:47,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:47,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-20 12:03:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:47,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-20 12:03:47,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:47,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-20 12:03:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:47,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 403 proven. 1054 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-20 12:03:47,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:03:47,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626816625] [2024-09-20 12:03:47,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626816625] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:03:47,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714599820] [2024-09-20 12:03:47,164 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 12:03:47,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:03:47,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:03:47,166 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:03:47,167 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-09-20 12:03:47,278 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 12:03:47,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:03:47,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-09-20 12:03:47,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:03:47,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 430 proven. 1027 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-20 12:03:47,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:03:48,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 430 proven. 1027 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-20 12:03:48,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714599820] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:03:48,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:03:48,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 35 [2024-09-20 12:03:48,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202570261] [2024-09-20 12:03:48,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:03:48,165 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-09-20 12:03:48,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:03:48,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-09-20 12:03:48,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=448, Invalid=742, Unknown=0, NotChecked=0, Total=1190 [2024-09-20 12:03:48,166 INFO L87 Difference]: Start difference. First operand 224 states and 225 transitions. Second operand has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 33 states have internal predecessors, (94), 28 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-20 12:03:48,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:03:48,413 INFO L93 Difference]: Finished difference Result 237 states and 239 transitions. [2024-09-20 12:03:48,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-20 12:03:48,414 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 33 states have internal predecessors, (94), 28 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 221 [2024-09-20 12:03:48,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:03:48,419 INFO L225 Difference]: With dead ends: 237 [2024-09-20 12:03:48,419 INFO L226 Difference]: Without dead ends: 235 [2024-09-20 12:03:48,420 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 466 SyntacticMatches, 54 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1047 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=454, Invalid=806, Unknown=0, NotChecked=0, Total=1260 [2024-09-20 12:03:48,421 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 12:03:48,425 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 102 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 12:03:48,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-09-20 12:03:48,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 231. [2024-09-20 12:03:48,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 171 states have (on average 1.0116959064327486) internal successors, (173), 172 states have internal predecessors, (173), 30 states have call successors, (30), 30 states have call predecessors, (30), 29 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-20 12:03:48,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2024-09-20 12:03:48,481 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 221 [2024-09-20 12:03:48,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:03:48,481 INFO L474 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2024-09-20 12:03:48,481 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 33 states have internal predecessors, (94), 28 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-20 12:03:48,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:48,482 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2024-09-20 12:03:48,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-09-20 12:03:48,483 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:03:48,483 INFO L216 NwaCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:03:48,528 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2024-09-20 12:03:48,687 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2024-09-20 12:03:48,688 INFO L399 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:03:48,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:48,688 INFO L85 PathProgramCache]: Analyzing trace with hash -906045492, now seen corresponding path program 53 times [2024-09-20 12:03:48,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:03:48,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675222792] [2024-09-20 12:03:48,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:03:48,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:03:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:50,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:03:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:50,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-20 12:03:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:50,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 12:03:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:50,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 12:03:50,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:50,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 12:03:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:50,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 12:03:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:50,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 12:03:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:50,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 12:03:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:50,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-20 12:03:50,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:50,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 12:03:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:50,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 12:03:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:50,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 12:03:50,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:50,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-20 12:03:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:50,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 12:03:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:50,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-20 12:03:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:50,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 12:03:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:50,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-20 12:03:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:50,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 12:03:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:50,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-20 12:03:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:50,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-20 12:03:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:50,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-20 12:03:50,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:50,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-20 12:03:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:50,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-20 12:03:50,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:50,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-20 12:03:50,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:50,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-20 12:03:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:50,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-20 12:03:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:50,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-20 12:03:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:50,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-20 12:03:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:50,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1082 proven. 457 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-20 12:03:50,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:03:50,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675222792] [2024-09-20 12:03:50,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675222792] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:03:50,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250220815] [2024-09-20 12:03:50,389 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 12:03:50,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:03:50,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:03:50,394 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:03:50,395 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-09-20 12:03:50,534 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2024-09-20 12:03:50,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:03:50,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-09-20 12:03:50,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:03:51,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-20 12:03:51,825 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:03:52,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-20 12:03:52,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250220815] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:03:52,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:03:52,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59, 59] total 89 [2024-09-20 12:03:52,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737595016] [2024-09-20 12:03:52,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:03:52,790 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2024-09-20 12:03:52,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:03:52,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2024-09-20 12:03:52,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1774, Invalid=6058, Unknown=0, NotChecked=0, Total=7832 [2024-09-20 12:03:52,793 INFO L87 Difference]: Start difference. First operand 231 states and 232 transitions. Second operand has 89 states, 89 states have (on average 1.7191011235955056) internal successors, (153), 89 states have internal predecessors, (153), 57 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-09-20 12:03:53,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:03:53,160 INFO L93 Difference]: Finished difference Result 324 states and 353 transitions. [2024-09-20 12:03:53,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-09-20 12:03:53,164 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 1.7191011235955056) internal successors, (153), 89 states have internal predecessors, (153), 57 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) Word has length 228 [2024-09-20 12:03:53,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:03:53,166 INFO L225 Difference]: With dead ends: 324 [2024-09-20 12:03:53,166 INFO L226 Difference]: Without dead ends: 232 [2024-09-20 12:03:53,167 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 428 SyntacticMatches, 55 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5049 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1774, Invalid=6058, Unknown=0, NotChecked=0, Total=7832 [2024-09-20 12:03:53,167 INFO L434 NwaCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 12:03:53,168 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 495 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 12:03:53,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-09-20 12:03:53,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2024-09-20 12:03:53,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 172 states have (on average 1.0116279069767442) internal successors, (174), 173 states have internal predecessors, (174), 30 states have call successors, (30), 30 states have call predecessors, (30), 29 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-20 12:03:53,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 233 transitions. [2024-09-20 12:03:53,186 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 233 transitions. Word has length 228 [2024-09-20 12:03:53,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:03:53,187 INFO L474 AbstractCegarLoop]: Abstraction has 232 states and 233 transitions. [2024-09-20 12:03:53,187 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 1.7191011235955056) internal successors, (153), 89 states have internal predecessors, (153), 57 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-09-20 12:03:53,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:53,187 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 233 transitions. [2024-09-20 12:03:53,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-09-20 12:03:53,188 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:03:53,188 INFO L216 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:03:53,207 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2024-09-20 12:03:53,389 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,55 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:03:53,389 INFO L399 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:03:53,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:53,390 INFO L85 PathProgramCache]: Analyzing trace with hash -196383528, now seen corresponding path program 54 times [2024-09-20 12:03:53,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:03:53,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475506830] [2024-09-20 12:03:53,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:03:53,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:03:53,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:54,231 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:03:54,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:54,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 12:03:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:54,234 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 12:03:54,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:54,235 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 12:03:54,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:54,236 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 12:03:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:54,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 12:03:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:54,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 12:03:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:54,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-20 12:03:54,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:54,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 12:03:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:54,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-20 12:03:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:54,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 12:03:54,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:54,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 12:03:54,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:54,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 12:03:54,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:54,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-20 12:03:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:54,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-20 12:03:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:54,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-20 12:03:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:54,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-20 12:03:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:54,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-20 12:03:54,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:54,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-20 12:03:54,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:54,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-20 12:03:54,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:54,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-20 12:03:54,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:54,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-20 12:03:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:54,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-20 12:03:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:54,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-20 12:03:54,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:54,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-20 12:03:54,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:54,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-20 12:03:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:54,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-20 12:03:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:54,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-20 12:03:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:54,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 432 proven. 1135 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-20 12:03:54,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:03:54,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475506830] [2024-09-20 12:03:54,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475506830] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:03:54,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332956367] [2024-09-20 12:03:54,268 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 12:03:54,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:03:54,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:03:54,272 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:03:54,284 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-09-20 12:03:54,426 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2024-09-20 12:03:54,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:03:54,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-09-20 12:03:54,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:03:54,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 460 proven. 1107 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-20 12:03:54,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:03:55,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 460 proven. 1107 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-09-20 12:03:55,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332956367] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:03:55,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:03:55,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 36 [2024-09-20 12:03:55,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960314579] [2024-09-20 12:03:55,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:03:55,270 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-20 12:03:55,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:03:55,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-20 12:03:55,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=478, Invalid=782, Unknown=0, NotChecked=0, Total=1260 [2024-09-20 12:03:55,271 INFO L87 Difference]: Start difference. First operand 232 states and 233 transitions. Second operand has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 34 states have internal predecessors, (97), 29 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-20 12:03:55,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:03:55,426 INFO L93 Difference]: Finished difference Result 245 states and 247 transitions. [2024-09-20 12:03:55,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-20 12:03:55,426 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 34 states have internal predecessors, (97), 29 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 229 [2024-09-20 12:03:55,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:03:55,428 INFO L225 Difference]: With dead ends: 245 [2024-09-20 12:03:55,429 INFO L226 Difference]: Without dead ends: 243 [2024-09-20 12:03:55,429 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 483 SyntacticMatches, 56 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1114 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=484, Invalid=848, Unknown=0, NotChecked=0, Total=1332 [2024-09-20 12:03:55,429 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 12:03:55,430 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 86 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 12:03:55,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-09-20 12:03:55,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 239. [2024-09-20 12:03:55,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 177 states have (on average 1.0112994350282485) internal successors, (179), 178 states have internal predecessors, (179), 31 states have call successors, (31), 31 states have call predecessors, (31), 30 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-20 12:03:55,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 240 transitions. [2024-09-20 12:03:55,472 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 240 transitions. Word has length 229 [2024-09-20 12:03:55,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:03:55,472 INFO L474 AbstractCegarLoop]: Abstraction has 239 states and 240 transitions. [2024-09-20 12:03:55,473 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 34 states have internal predecessors, (97), 29 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-20 12:03:55,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:55,474 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 240 transitions. [2024-09-20 12:03:55,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-09-20 12:03:55,475 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:03:55,475 INFO L216 NwaCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:03:55,514 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2024-09-20 12:03:55,679 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,56 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:03:55,680 INFO L399 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:03:55,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:03:55,680 INFO L85 PathProgramCache]: Analyzing trace with hash -888906421, now seen corresponding path program 55 times [2024-09-20 12:03:55,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:03:55,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947969504] [2024-09-20 12:03:55,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:03:55,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:03:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:57,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:03:57,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:57,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-09-20 12:03:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:57,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 12:03:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:57,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 12:03:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:57,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 12:03:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:57,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 12:03:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:57,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 12:03:57,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:57,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-20 12:03:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:57,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 12:03:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:57,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-20 12:03:57,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:57,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 12:03:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:57,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 12:03:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:57,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 12:03:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:57,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-20 12:03:57,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:57,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-20 12:03:57,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:57,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-20 12:03:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:57,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-20 12:03:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:57,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-20 12:03:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:57,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-20 12:03:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:57,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-20 12:03:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:57,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-20 12:03:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:57,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-20 12:03:57,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:57,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-20 12:03:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:57,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-20 12:03:57,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:57,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-20 12:03:57,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:57,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-20 12:03:57,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:57,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-20 12:03:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:57,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-20 12:03:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:57,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-20 12:03:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:57,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1164 proven. 488 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-20 12:03:57,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:03:57,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947969504] [2024-09-20 12:03:57,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947969504] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:03:57,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124809674] [2024-09-20 12:03:57,179 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 12:03:57,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:03:57,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:03:57,181 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:03:57,183 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-09-20 12:03:57,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:03:57,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-09-20 12:03:57,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:03:58,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-20 12:03:58,718 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:03:59,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-20 12:03:59,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124809674] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:03:59,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:03:59,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 92 [2024-09-20 12:03:59,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138700280] [2024-09-20 12:03:59,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:03:59,745 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2024-09-20 12:03:59,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:03:59,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2024-09-20 12:03:59,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1895, Invalid=6477, Unknown=0, NotChecked=0, Total=8372 [2024-09-20 12:03:59,748 INFO L87 Difference]: Start difference. First operand 239 states and 240 transitions. Second operand has 92 states, 92 states have (on average 1.7173913043478262) internal successors, (158), 92 states have internal predecessors, (158), 59 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2024-09-20 12:04:00,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:04:00,224 INFO L93 Difference]: Finished difference Result 335 states and 365 transitions. [2024-09-20 12:04:00,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-09-20 12:04:00,225 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 1.7173913043478262) internal successors, (158), 92 states have internal predecessors, (158), 59 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Word has length 236 [2024-09-20 12:04:00,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:04:00,227 INFO L225 Difference]: With dead ends: 335 [2024-09-20 12:04:00,231 INFO L226 Difference]: Without dead ends: 240 [2024-09-20 12:04:00,232 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 443 SyntacticMatches, 57 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5404 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1895, Invalid=6477, Unknown=0, NotChecked=0, Total=8372 [2024-09-20 12:04:00,233 INFO L434 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 12:04:00,233 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 791 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 12:04:00,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-09-20 12:04:00,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2024-09-20 12:04:00,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 178 states have (on average 1.0112359550561798) internal successors, (180), 179 states have internal predecessors, (180), 31 states have call successors, (31), 31 states have call predecessors, (31), 30 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-20 12:04:00,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 241 transitions. [2024-09-20 12:04:00,277 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 241 transitions. Word has length 236 [2024-09-20 12:04:00,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:04:00,277 INFO L474 AbstractCegarLoop]: Abstraction has 240 states and 241 transitions. [2024-09-20 12:04:00,278 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 1.7173913043478262) internal successors, (158), 92 states have internal predecessors, (158), 59 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2024-09-20 12:04:00,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:04:00,278 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 241 transitions. [2024-09-20 12:04:00,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-09-20 12:04:00,279 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:04:00,279 INFO L216 NwaCegarLoop]: trace histogram [29, 29, 29, 29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:04:00,317 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2024-09-20 12:04:00,483 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-09-20 12:04:00,484 INFO L399 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:04:00,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:04:00,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1323227561, now seen corresponding path program 56 times [2024-09-20 12:04:00,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:04:00,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626158052] [2024-09-20 12:04:00,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:04:00,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:04:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:01,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:04:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:01,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 12:04:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:01,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-20 12:04:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:01,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 12:04:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:01,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-20 12:04:01,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:01,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 12:04:01,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:01,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-20 12:04:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:01,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 12:04:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:01,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-20 12:04:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:01,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 12:04:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:01,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-20 12:04:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:01,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 12:04:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:01,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-20 12:04:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:01,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 12:04:01,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:01,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-20 12:04:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:01,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-20 12:04:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:01,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-20 12:04:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:01,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-20 12:04:01,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:01,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-20 12:04:01,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:01,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-20 12:04:01,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:01,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-20 12:04:01,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:01,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-20 12:04:01,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:01,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-20 12:04:01,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:01,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-20 12:04:01,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:01,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-20 12:04:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:01,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-20 12:04:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:01,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-20 12:04:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:01,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-20 12:04:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:01,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-20 12:04:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:01,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 462 proven. 1219 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-20 12:04:01,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:04:01,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626158052] [2024-09-20 12:04:01,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626158052] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:04:01,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965585283] [2024-09-20 12:04:01,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 12:04:01,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:04:01,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:04:01,503 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:04:01,506 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-09-20 12:04:01,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 12:04:01,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:04:01,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-09-20 12:04:01,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:04:01,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 491 proven. 1190 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-20 12:04:01,807 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:04:02,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 491 proven. 1190 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-20 12:04:02,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965585283] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:04:02,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:04:02,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 37 [2024-09-20 12:04:02,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008104232] [2024-09-20 12:04:02,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:04:02,754 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-20 12:04:02,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:04:02,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-20 12:04:02,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=509, Invalid=823, Unknown=0, NotChecked=0, Total=1332 [2024-09-20 12:04:02,755 INFO L87 Difference]: Start difference. First operand 240 states and 241 transitions. Second operand has 37 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 35 states have internal predecessors, (100), 30 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-20 12:04:02,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:04:02,985 INFO L93 Difference]: Finished difference Result 253 states and 255 transitions. [2024-09-20 12:04:02,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-09-20 12:04:02,985 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 35 states have internal predecessors, (100), 30 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 237 [2024-09-20 12:04:02,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:04:02,987 INFO L225 Difference]: With dead ends: 253 [2024-09-20 12:04:02,987 INFO L226 Difference]: Without dead ends: 251 [2024-09-20 12:04:02,988 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 498 SyntacticMatches, 60 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1243 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=515, Invalid=891, Unknown=0, NotChecked=0, Total=1406 [2024-09-20 12:04:02,988 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 12:04:02,988 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 125 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 12:04:02,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-09-20 12:04:03,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 247. [2024-09-20 12:04:03,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 183 states have (on average 1.010928961748634) internal successors, (185), 184 states have internal predecessors, (185), 32 states have call successors, (32), 32 states have call predecessors, (32), 31 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-20 12:04:03,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 248 transitions. [2024-09-20 12:04:03,009 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 248 transitions. Word has length 237 [2024-09-20 12:04:03,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:04:03,009 INFO L474 AbstractCegarLoop]: Abstraction has 247 states and 248 transitions. [2024-09-20 12:04:03,009 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 35 states have internal predecessors, (100), 30 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-09-20 12:04:03,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:04:03,010 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 248 transitions. [2024-09-20 12:04:03,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-09-20 12:04:03,011 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:04:03,011 INFO L216 NwaCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:04:03,031 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2024-09-20 12:04:03,215 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-09-20 12:04:03,216 INFO L399 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:04:03,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:04:03,216 INFO L85 PathProgramCache]: Analyzing trace with hash 649185004, now seen corresponding path program 57 times [2024-09-20 12:04:03,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:04:03,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725424416] [2024-09-20 12:04:03,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:04:03,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:04:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:05,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:04:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:05,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 12:04:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:05,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-20 12:04:05,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:05,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 12:04:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:05,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-20 12:04:05,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:05,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 12:04:05,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:05,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-20 12:04:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:05,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 12:04:05,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:05,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-20 12:04:05,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:05,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 12:04:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:05,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-20 12:04:05,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:05,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 12:04:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:05,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-20 12:04:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:05,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 12:04:05,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:05,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-20 12:04:05,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:05,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-20 12:04:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:05,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-20 12:04:05,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:05,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-20 12:04:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:05,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-20 12:04:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:05,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-20 12:04:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:05,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-20 12:04:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:05,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-20 12:04:05,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:05,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-20 12:04:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:05,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-20 12:04:05,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:05,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-20 12:04:05,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:05,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-20 12:04:05,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:05,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-20 12:04:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:05,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-20 12:04:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:05,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-20 12:04:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:05,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-20 12:04:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:05,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1249 proven. 520 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-20 12:04:05,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:04:05,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725424416] [2024-09-20 12:04:05,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725424416] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:04:05,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613096452] [2024-09-20 12:04:05,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 12:04:05,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:04:05,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:04:05,296 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:04:05,297 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-09-20 12:04:05,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2024-09-20 12:04:05,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:04:05,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-09-20 12:04:05,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:04:07,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-20 12:04:07,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:04:08,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-20 12:04:08,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613096452] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:04:08,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:04:08,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 95 [2024-09-20 12:04:08,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072047777] [2024-09-20 12:04:08,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:04:08,587 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2024-09-20 12:04:08,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:04:08,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2024-09-20 12:04:08,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2020, Invalid=6910, Unknown=0, NotChecked=0, Total=8930 [2024-09-20 12:04:08,590 INFO L87 Difference]: Start difference. First operand 247 states and 248 transitions. Second operand has 95 states, 95 states have (on average 1.7157894736842105) internal successors, (163), 95 states have internal predecessors, (163), 61 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-09-20 12:04:09,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:04:09,132 INFO L93 Difference]: Finished difference Result 346 states and 377 transitions. [2024-09-20 12:04:09,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-09-20 12:04:09,133 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 1.7157894736842105) internal successors, (163), 95 states have internal predecessors, (163), 61 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) Word has length 244 [2024-09-20 12:04:09,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:04:09,140 INFO L225 Difference]: With dead ends: 346 [2024-09-20 12:04:09,144 INFO L226 Difference]: Without dead ends: 248 [2024-09-20 12:04:09,146 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 458 SyntacticMatches, 59 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5771 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2020, Invalid=6910, Unknown=0, NotChecked=0, Total=8930 [2024-09-20 12:04:09,146 INFO L434 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 12:04:09,146 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 770 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 12:04:09,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-09-20 12:04:09,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2024-09-20 12:04:09,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 184 states have (on average 1.0108695652173914) internal successors, (186), 185 states have internal predecessors, (186), 32 states have call successors, (32), 32 states have call predecessors, (32), 31 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-20 12:04:09,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 249 transitions. [2024-09-20 12:04:09,193 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 249 transitions. Word has length 244 [2024-09-20 12:04:09,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:04:09,193 INFO L474 AbstractCegarLoop]: Abstraction has 248 states and 249 transitions. [2024-09-20 12:04:09,194 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 1.7157894736842105) internal successors, (163), 95 states have internal predecessors, (163), 61 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-09-20 12:04:09,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:04:09,194 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 249 transitions. [2024-09-20 12:04:09,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-09-20 12:04:09,195 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:04:09,195 INFO L216 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:04:09,235 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2024-09-20 12:04:09,400 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-09-20 12:04:09,400 INFO L399 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:04:09,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:04:09,400 INFO L85 PathProgramCache]: Analyzing trace with hash -550845448, now seen corresponding path program 58 times [2024-09-20 12:04:09,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:04:09,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383777134] [2024-09-20 12:04:09,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:04:09,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:04:09,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:10,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:04:10,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:10,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 12:04:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:10,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 12:04:10,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:10,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-20 12:04:10,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:10,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 12:04:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:10,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-20 12:04:10,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:10,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 12:04:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:10,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-20 12:04:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:10,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 12:04:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:10,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-20 12:04:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:10,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 12:04:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:10,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-20 12:04:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:10,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 12:04:10,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:10,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-20 12:04:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:10,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-20 12:04:10,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:10,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-20 12:04:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:10,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-20 12:04:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:10,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-20 12:04:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:10,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-20 12:04:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:10,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-20 12:04:10,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:10,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-20 12:04:10,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:10,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-20 12:04:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:10,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-20 12:04:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:10,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-20 12:04:10,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:10,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-20 12:04:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:10,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-20 12:04:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:10,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-20 12:04:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:10,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-20 12:04:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:10,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-20 12:04:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:10,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-20 12:04:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:10,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 493 proven. 1306 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-20 12:04:10,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:04:10,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383777134] [2024-09-20 12:04:10,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383777134] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:04:10,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189160057] [2024-09-20 12:04:10,497 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 12:04:10,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:04:10,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:04:10,498 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:04:10,500 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-09-20 12:04:10,608 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 12:04:10,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:04:10,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-09-20 12:04:10,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:04:10,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 523 proven. 1276 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-20 12:04:10,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:04:11,570 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 523 proven. 1276 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-20 12:04:11,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189160057] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:04:11,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:04:11,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 38 [2024-09-20 12:04:11,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625722352] [2024-09-20 12:04:11,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:04:11,572 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-20 12:04:11,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:04:11,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-20 12:04:11,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=541, Invalid=865, Unknown=0, NotChecked=0, Total=1406 [2024-09-20 12:04:11,573 INFO L87 Difference]: Start difference. First operand 248 states and 249 transitions. Second operand has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 36 states have internal predecessors, (103), 31 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-20 12:04:11,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:04:11,807 INFO L93 Difference]: Finished difference Result 261 states and 263 transitions. [2024-09-20 12:04:11,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-09-20 12:04:11,808 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 36 states have internal predecessors, (103), 31 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 245 [2024-09-20 12:04:11,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:04:11,810 INFO L225 Difference]: With dead ends: 261 [2024-09-20 12:04:11,811 INFO L226 Difference]: Without dead ends: 259 [2024-09-20 12:04:11,811 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 517 SyntacticMatches, 60 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1254 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=547, Invalid=935, Unknown=0, NotChecked=0, Total=1482 [2024-09-20 12:04:11,812 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 12:04:11,812 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 112 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 12:04:11,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-09-20 12:04:11,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 255. [2024-09-20 12:04:11,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 189 states have (on average 1.0105820105820107) internal successors, (191), 190 states have internal predecessors, (191), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-20 12:04:11,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 256 transitions. [2024-09-20 12:04:11,889 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 256 transitions. Word has length 245 [2024-09-20 12:04:11,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:04:11,893 INFO L474 AbstractCegarLoop]: Abstraction has 255 states and 256 transitions. [2024-09-20 12:04:11,893 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 36 states have internal predecessors, (103), 31 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-20 12:04:11,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:04:11,894 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 256 transitions. [2024-09-20 12:04:11,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-09-20 12:04:11,896 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:04:11,896 INFO L216 NwaCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:04:11,915 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2024-09-20 12:04:12,096 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,60 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:04:12,097 INFO L399 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:04:12,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:04:12,097 INFO L85 PathProgramCache]: Analyzing trace with hash 967492139, now seen corresponding path program 59 times [2024-09-20 12:04:12,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:04:12,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427314863] [2024-09-20 12:04:12,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:04:12,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:04:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:13,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:04:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:13,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-20 12:04:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:13,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 12:04:13,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:13,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-20 12:04:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:13,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 12:04:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:13,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-20 12:04:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:13,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 12:04:13,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:13,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-20 12:04:13,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:13,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 12:04:13,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:13,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-20 12:04:13,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:13,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 12:04:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:13,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-20 12:04:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:13,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 12:04:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:13,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-20 12:04:13,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:13,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-20 12:04:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:13,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-20 12:04:13,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:13,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-20 12:04:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:13,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-20 12:04:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:13,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-20 12:04:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:13,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-20 12:04:13,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:13,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-20 12:04:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:13,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-20 12:04:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:13,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-20 12:04:13,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:13,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-20 12:04:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:13,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-20 12:04:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:13,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-20 12:04:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:13,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-20 12:04:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:13,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-20 12:04:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:13,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-20 12:04:13,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:13,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-20 12:04:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:13,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-20 12:04:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:13,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1337 proven. 553 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-20 12:04:13,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:04:13,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427314863] [2024-09-20 12:04:13,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427314863] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:04:13,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996313298] [2024-09-20 12:04:13,928 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 12:04:13,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:04:13,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:04:13,930 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:04:13,931 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-09-20 12:04:14,072 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2024-09-20 12:04:14,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:04:14,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-09-20 12:04:14,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:04:15,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-20 12:04:15,560 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:04:17,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-20 12:04:17,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996313298] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:04:17,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:04:17,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 98 [2024-09-20 12:04:17,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098682989] [2024-09-20 12:04:17,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:04:17,018 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-09-20 12:04:17,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:04:17,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-09-20 12:04:17,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2149, Invalid=7357, Unknown=0, NotChecked=0, Total=9506 [2024-09-20 12:04:17,020 INFO L87 Difference]: Start difference. First operand 255 states and 256 transitions. Second operand has 98 states, 98 states have (on average 1.7142857142857142) internal successors, (168), 98 states have internal predecessors, (168), 63 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-09-20 12:04:17,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:04:17,628 INFO L93 Difference]: Finished difference Result 357 states and 389 transitions. [2024-09-20 12:04:17,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-09-20 12:04:17,630 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 1.7142857142857142) internal successors, (168), 98 states have internal predecessors, (168), 63 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Word has length 252 [2024-09-20 12:04:17,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:04:17,632 INFO L225 Difference]: With dead ends: 357 [2024-09-20 12:04:17,632 INFO L226 Difference]: Without dead ends: 256 [2024-09-20 12:04:17,640 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 473 SyntacticMatches, 61 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6150 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2149, Invalid=7357, Unknown=0, NotChecked=0, Total=9506 [2024-09-20 12:04:17,641 INFO L434 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2024-09-20 12:04:17,641 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 464 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 972 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-20 12:04:17,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-09-20 12:04:17,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2024-09-20 12:04:17,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 190 states have (on average 1.0105263157894737) internal successors, (192), 191 states have internal predecessors, (192), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-20 12:04:17,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 257 transitions. [2024-09-20 12:04:17,692 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 257 transitions. Word has length 252 [2024-09-20 12:04:17,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:04:17,692 INFO L474 AbstractCegarLoop]: Abstraction has 256 states and 257 transitions. [2024-09-20 12:04:17,693 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 1.7142857142857142) internal successors, (168), 98 states have internal predecessors, (168), 63 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-09-20 12:04:17,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:04:17,693 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 257 transitions. [2024-09-20 12:04:17,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-09-20 12:04:17,694 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:04:17,694 INFO L216 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:04:17,714 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2024-09-20 12:04:17,898 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2024-09-20 12:04:17,900 INFO L399 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:04:17,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:04:17,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1895042249, now seen corresponding path program 60 times [2024-09-20 12:04:17,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:04:17,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221083829] [2024-09-20 12:04:17,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:04:17,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:04:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:18,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:04:18,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:18,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-20 12:04:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:18,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 12:04:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:18,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 12:04:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:18,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-20 12:04:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:18,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 12:04:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:18,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-20 12:04:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:18,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 12:04:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:18,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-20 12:04:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:18,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 12:04:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:18,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-20 12:04:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:18,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 12:04:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:18,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-20 12:04:19,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:19,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 12:04:19,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:19,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-20 12:04:19,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:19,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-20 12:04:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:19,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-20 12:04:19,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:19,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-20 12:04:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:19,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-20 12:04:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:19,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-20 12:04:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:19,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-20 12:04:19,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:19,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-20 12:04:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:19,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-20 12:04:19,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:19,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-20 12:04:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:19,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-20 12:04:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:19,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-20 12:04:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:19,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-20 12:04:19,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:19,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-20 12:04:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:19,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-20 12:04:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:19,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-20 12:04:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:19,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-20 12:04:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:19,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 525 proven. 1396 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-20 12:04:19,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:04:19,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221083829] [2024-09-20 12:04:19,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221083829] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:04:19,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152584772] [2024-09-20 12:04:19,024 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 12:04:19,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:04:19,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:04:19,036 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:04:19,038 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-09-20 12:04:19,195 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2024-09-20 12:04:19,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:04:19,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-09-20 12:04:19,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:04:19,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 556 proven. 1365 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-20 12:04:19,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:04:20,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 556 proven. 1365 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-20 12:04:20,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152584772] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:04:20,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:04:20,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 39 [2024-09-20 12:04:20,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402143514] [2024-09-20 12:04:20,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:04:20,234 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-09-20 12:04:20,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:04:20,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-09-20 12:04:20,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=574, Invalid=908, Unknown=0, NotChecked=0, Total=1482 [2024-09-20 12:04:20,235 INFO L87 Difference]: Start difference. First operand 256 states and 257 transitions. Second operand has 39 states, 39 states have (on average 2.717948717948718) internal successors, (106), 37 states have internal predecessors, (106), 32 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-20 12:04:20,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:04:20,451 INFO L93 Difference]: Finished difference Result 269 states and 271 transitions. [2024-09-20 12:04:20,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-09-20 12:04:20,451 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.717948717948718) internal successors, (106), 37 states have internal predecessors, (106), 32 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Word has length 253 [2024-09-20 12:04:20,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:04:20,453 INFO L225 Difference]: With dead ends: 269 [2024-09-20 12:04:20,453 INFO L226 Difference]: Without dead ends: 267 [2024-09-20 12:04:20,454 INFO L433 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 [2024-09-20 12:04:20,454 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 12:04:20,454 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 113 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 12:04:20,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-09-20 12:04:20,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 263. [2024-09-20 12:04:20,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 195 states have (on average 1.0102564102564102) internal successors, (197), 196 states have internal predecessors, (197), 34 states have call successors, (34), 34 states have call predecessors, (34), 33 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-20 12:04:20,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 264 transitions. [2024-09-20 12:04:20,498 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 264 transitions. Word has length 253 [2024-09-20 12:04:20,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:04:20,502 INFO L474 AbstractCegarLoop]: Abstraction has 263 states and 264 transitions. [2024-09-20 12:04:20,503 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.717948717948718) internal successors, (106), 37 states have internal predecessors, (106), 32 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-20 12:04:20,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:04:20,503 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 264 transitions. [2024-09-20 12:04:20,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-09-20 12:04:20,504 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:04:20,504 INFO L216 NwaCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:04:20,528 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2024-09-20 12:04:20,705 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,62 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:04:20,705 INFO L399 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:04:20,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:04:20,706 INFO L85 PathProgramCache]: Analyzing trace with hash 38845964, now seen corresponding path program 61 times [2024-09-20 12:04:20,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:04:20,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201729737] [2024-09-20 12:04:20,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:04:20,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:04:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:22,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:04:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:22,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-20 12:04:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:22,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 12:04:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:22,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 12:04:22,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:22,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-20 12:04:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:22,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 12:04:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:22,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-20 12:04:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:22,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 12:04:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:22,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-20 12:04:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:22,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 12:04:22,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:22,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-20 12:04:22,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:22,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 12:04:22,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:22,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-20 12:04:22,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:22,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 12:04:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:22,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-20 12:04:22,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:22,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-20 12:04:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:22,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-20 12:04:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:22,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-20 12:04:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:22,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-20 12:04:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:22,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-20 12:04:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:22,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-20 12:04:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:22,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-20 12:04:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:22,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-20 12:04:22,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:22,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-20 12:04:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:22,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-20 12:04:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:22,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-20 12:04:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:22,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-20 12:04:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:22,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-20 12:04:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:22,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-20 12:04:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:22,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-20 12:04:22,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:22,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-20 12:04:22,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:22,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-20 12:04:22,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:22,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1428 proven. 587 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-20 12:04:22,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:04:22,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201729737] [2024-09-20 12:04:22,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201729737] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:04:22,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917914613] [2024-09-20 12:04:22,971 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 12:04:22,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:04:22,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:04:22,973 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:04:22,975 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-09-20 12:04:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:23,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-09-20 12:04:23,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:04:24,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-20 12:04:24,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:04:26,430 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-20 12:04:26,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917914613] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:04:26,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:04:26,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67, 67] total 101 [2024-09-20 12:04:26,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76371200] [2024-09-20 12:04:26,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:04:26,432 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2024-09-20 12:04:26,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:04:26,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2024-09-20 12:04:26,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2282, Invalid=7818, Unknown=0, NotChecked=0, Total=10100 [2024-09-20 12:04:26,435 INFO L87 Difference]: Start difference. First operand 263 states and 264 transitions. Second operand has 101 states, 101 states have (on average 1.7128712871287128) internal successors, (173), 101 states have internal predecessors, (173), 65 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2024-09-20 12:04:27,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:04:27,025 INFO L93 Difference]: Finished difference Result 368 states and 401 transitions. [2024-09-20 12:04:27,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-09-20 12:04:27,026 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.7128712871287128) internal successors, (173), 101 states have internal predecessors, (173), 65 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) Word has length 260 [2024-09-20 12:04:27,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:04:27,029 INFO L225 Difference]: With dead ends: 368 [2024-09-20 12:04:27,029 INFO L226 Difference]: Without dead ends: 264 [2024-09-20 12:04:27,030 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 488 SyntacticMatches, 63 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6541 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2282, Invalid=7818, Unknown=0, NotChecked=0, Total=10100 [2024-09-20 12:04:27,031 INFO L434 NwaCegarLoop]: 72 mSDtfsCounter, 0 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 [2024-09-20 12:04:27,032 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 672 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1053 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 12:04:27,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-09-20 12:04:27,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2024-09-20 12:04:27,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 196 states have (on average 1.010204081632653) internal successors, (198), 197 states have internal predecessors, (198), 34 states have call successors, (34), 34 states have call predecessors, (34), 33 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-20 12:04:27,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 265 transitions. [2024-09-20 12:04:27,062 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 265 transitions. Word has length 260 [2024-09-20 12:04:27,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:04:27,063 INFO L474 AbstractCegarLoop]: Abstraction has 264 states and 265 transitions. [2024-09-20 12:04:27,063 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.7128712871287128) internal successors, (173), 101 states have internal predecessors, (173), 65 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2024-09-20 12:04:27,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:04:27,064 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 265 transitions. [2024-09-20 12:04:27,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-09-20 12:04:27,065 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:04:27,065 INFO L216 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:04:27,086 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2024-09-20 12:04:27,266 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,63 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:04:27,267 INFO L399 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:04:27,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:04:27,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1931879192, now seen corresponding path program 62 times [2024-09-20 12:04:27,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:04:27,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122725444] [2024-09-20 12:04:27,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:04:27,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:04:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:28,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:04:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:28,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 12:04:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:28,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-20 12:04:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:28,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-20 12:04:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:28,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 12:04:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:28,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 12:04:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:28,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 12:04:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:28,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-20 12:04:28,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:28,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 12:04:28,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:28,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-20 12:04:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:28,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 12:04:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:28,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-20 12:04:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:28,438 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 12:04:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:28,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-20 12:04:28,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:28,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 12:04:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:28,441 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-20 12:04:28,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:28,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-20 12:04:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:28,444 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-20 12:04:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:28,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-20 12:04:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:28,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-20 12:04:28,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:28,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 12:04:28,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:28,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-20 12:04:28,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:28,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-20 12:04:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:28,450 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-20 12:04:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:28,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-20 12:04:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:28,453 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-20 12:04:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:28,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-20 12:04:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:28,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-20 12:04:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:28,456 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-20 12:04:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:28,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-20 12:04:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:28,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-20 12:04:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:28,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-20 12:04:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:28,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 558 proven. 1489 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-20 12:04:28,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:04:28,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122725444] [2024-09-20 12:04:28,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122725444] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:04:28,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738314376] [2024-09-20 12:04:28,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 12:04:28,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:04:28,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:04:28,465 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:04:28,466 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-09-20 12:04:28,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 12:04:28,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:04:28,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-09-20 12:04:28,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:04:28,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 590 proven. 1457 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-20 12:04:28,854 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:04:30,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 590 proven. 1457 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-09-20 12:04:30,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738314376] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:04:30,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:04:30,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 40 [2024-09-20 12:04:30,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586443827] [2024-09-20 12:04:30,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:04:30,017 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-20 12:04:30,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:04:30,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-20 12:04:30,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=608, Invalid=952, Unknown=0, NotChecked=0, Total=1560 [2024-09-20 12:04:30,018 INFO L87 Difference]: Start difference. First operand 264 states and 265 transitions. Second operand has 40 states, 40 states have (on average 2.725) internal successors, (109), 38 states have internal predecessors, (109), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-20 12:04:30,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:04:30,226 INFO L93 Difference]: Finished difference Result 277 states and 279 transitions. [2024-09-20 12:04:30,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-20 12:04:30,226 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.725) internal successors, (109), 38 states have internal predecessors, (109), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 261 [2024-09-20 12:04:30,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:04:30,228 INFO L225 Difference]: With dead ends: 277 [2024-09-20 12:04:30,228 INFO L226 Difference]: Without dead ends: 275 [2024-09-20 12:04:30,229 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 549 SyntacticMatches, 66 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1468 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=614, Invalid=1026, Unknown=0, NotChecked=0, Total=1640 [2024-09-20 12:04:30,229 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 12:04:30,229 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 97 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 12:04:30,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-09-20 12:04:30,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 271. [2024-09-20 12:04:30,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 201 states have (on average 1.0099502487562189) internal successors, (203), 202 states have internal predecessors, (203), 35 states have call successors, (35), 35 states have call predecessors, (35), 34 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-20 12:04:30,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 272 transitions. [2024-09-20 12:04:30,269 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 272 transitions. Word has length 261 [2024-09-20 12:04:30,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:04:30,269 INFO L474 AbstractCegarLoop]: Abstraction has 271 states and 272 transitions. [2024-09-20 12:04:30,270 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.725) internal successors, (109), 38 states have internal predecessors, (109), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-20 12:04:30,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:04:30,270 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 272 transitions. [2024-09-20 12:04:30,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-09-20 12:04:30,271 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:04:30,271 INFO L216 NwaCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:04:30,289 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2024-09-20 12:04:30,476 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2024-09-20 12:04:30,476 INFO L399 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:04:30,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:04:30,476 INFO L85 PathProgramCache]: Analyzing trace with hash -786686197, now seen corresponding path program 63 times [2024-09-20 12:04:30,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:04:30,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785166537] [2024-09-20 12:04:30,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:04:30,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:04:30,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:32,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:04:32,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:32,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-20 12:04:32,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:32,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-20 12:04:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:32,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-20 12:04:32,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:32,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 12:04:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:32,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 12:04:32,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:32,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 12:04:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:32,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-20 12:04:32,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:32,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 12:04:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:32,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-20 12:04:32,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:32,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 12:04:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:32,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-20 12:04:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:32,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 12:04:32,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:32,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-20 12:04:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:32,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 12:04:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:32,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-20 12:04:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:32,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-20 12:04:32,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:32,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-20 12:04:32,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:32,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-20 12:04:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:32,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-20 12:04:32,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:32,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 12:04:32,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:32,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-20 12:04:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:32,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-20 12:04:32,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:32,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-20 12:04:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:32,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-20 12:04:32,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:32,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-20 12:04:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:32,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-20 12:04:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:32,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-20 12:04:32,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:32,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-20 12:04:32,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:32,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-20 12:04:32,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:32,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-20 12:04:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:32,601 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-20 12:04:32,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:32,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-20 12:04:32,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:32,604 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1522 proven. 622 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-20 12:04:32,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:04:32,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785166537] [2024-09-20 12:04:32,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785166537] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:04:32,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157675671] [2024-09-20 12:04:32,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 12:04:32,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:04:32,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:04:32,606 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:04:32,608 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-09-20 12:04:32,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2024-09-20 12:04:32,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:04:32,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-09-20 12:04:32,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:04:34,770 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-20 12:04:34,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:04:36,145 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-20 12:04:36,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157675671] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:04:36,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:04:36,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69, 69] total 104 [2024-09-20 12:04:36,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628074993] [2024-09-20 12:04:36,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:04:36,146 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2024-09-20 12:04:36,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:04:36,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2024-09-20 12:04:36,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2419, Invalid=8293, Unknown=0, NotChecked=0, Total=10712 [2024-09-20 12:04:36,149 INFO L87 Difference]: Start difference. First operand 271 states and 272 transitions. Second operand has 104 states, 104 states have (on average 1.7115384615384615) internal successors, (178), 104 states have internal predecessors, (178), 67 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-09-20 12:04:36,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:04:36,642 INFO L93 Difference]: Finished difference Result 379 states and 413 transitions. [2024-09-20 12:04:36,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-09-20 12:04:36,642 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 1.7115384615384615) internal successors, (178), 104 states have internal predecessors, (178), 67 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) Word has length 268 [2024-09-20 12:04:36,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:04:36,645 INFO L225 Difference]: With dead ends: 379 [2024-09-20 12:04:36,645 INFO L226 Difference]: Without dead ends: 272 [2024-09-20 12:04:36,646 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 503 SyntacticMatches, 65 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6944 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2419, Invalid=8293, Unknown=0, NotChecked=0, Total=10712 [2024-09-20 12:04:36,647 INFO L434 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 [2024-09-20 12:04:36,647 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 610 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 972 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 12:04:36,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-09-20 12:04:36,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2024-09-20 12:04:36,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 202 states have (on average 1.00990099009901) internal successors, (204), 203 states have internal predecessors, (204), 35 states have call successors, (35), 35 states have call predecessors, (35), 34 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-20 12:04:36,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 273 transitions. [2024-09-20 12:04:36,671 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 273 transitions. Word has length 268 [2024-09-20 12:04:36,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:04:36,671 INFO L474 AbstractCegarLoop]: Abstraction has 272 states and 273 transitions. [2024-09-20 12:04:36,672 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 1.7115384615384615) internal successors, (178), 104 states have internal predecessors, (178), 67 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-09-20 12:04:36,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:04:36,672 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 273 transitions. [2024-09-20 12:04:36,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-09-20 12:04:36,673 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:04:36,673 INFO L216 NwaCegarLoop]: trace histogram [33, 33, 33, 33, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:04:36,693 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2024-09-20 12:04:36,877 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,65 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:04:36,878 INFO L399 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:04:36,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:04:36,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1879984105, now seen corresponding path program 64 times [2024-09-20 12:04:36,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:04:36,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237759755] [2024-09-20 12:04:36,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:04:36,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:04:36,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:38,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:04:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:38,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 12:04:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:38,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-20 12:04:38,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:38,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 12:04:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:38,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 12:04:38,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:38,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 12:04:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:38,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 12:04:38,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:38,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 12:04:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:38,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 12:04:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:38,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 12:04:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:38,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-20 12:04:38,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:38,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 12:04:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:38,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-20 12:04:38,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:38,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 12:04:38,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:38,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-20 12:04:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:38,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 12:04:38,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:38,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-20 12:04:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:38,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 12:04:38,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:38,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-20 12:04:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:38,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-20 12:04:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:38,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-20 12:04:38,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:38,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-20 12:04:38,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:38,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-20 12:04:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:38,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-20 12:04:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:38,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-20 12:04:38,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:38,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-20 12:04:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:38,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-20 12:04:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:38,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-20 12:04:38,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:38,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-20 12:04:38,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:38,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-20 12:04:38,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:38,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-20 12:04:38,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:38,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-20 12:04:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:38,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-20 12:04:38,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:38,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 592 proven. 1585 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-20 12:04:38,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:04:38,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237759755] [2024-09-20 12:04:38,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237759755] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:04:38,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350852777] [2024-09-20 12:04:38,079 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 12:04:38,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:04:38,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:04:38,081 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:04:38,082 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-09-20 12:04:38,197 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 12:04:38,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:04:38,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-09-20 12:04:38,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:04:38,524 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 625 proven. 1552 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-20 12:04:38,524 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:04:39,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 625 proven. 1552 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-20 12:04:39,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350852777] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:04:39,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:04:39,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 41 [2024-09-20 12:04:39,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641608939] [2024-09-20 12:04:39,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:04:39,592 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-20 12:04:39,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:04:39,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-20 12:04:39,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=643, Invalid=997, Unknown=0, NotChecked=0, Total=1640 [2024-09-20 12:04:39,593 INFO L87 Difference]: Start difference. First operand 272 states and 273 transitions. Second operand has 41 states, 41 states have (on average 2.731707317073171) internal successors, (112), 39 states have internal predecessors, (112), 34 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-20 12:04:39,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:04:39,816 INFO L93 Difference]: Finished difference Result 285 states and 287 transitions. [2024-09-20 12:04:39,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-20 12:04:39,817 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.731707317073171) internal successors, (112), 39 states have internal predecessors, (112), 34 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Word has length 269 [2024-09-20 12:04:39,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:04:39,819 INFO L225 Difference]: With dead ends: 285 [2024-09-20 12:04:39,819 INFO L226 Difference]: Without dead ends: 283 [2024-09-20 12:04:39,819 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 568 SyntacticMatches, 66 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=649, Invalid=1073, Unknown=0, NotChecked=0, Total=1722 [2024-09-20 12:04:39,819 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 12:04:39,819 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 108 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 12:04:39,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-09-20 12:04:39,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 279. [2024-09-20 12:04:39,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 207 states have (on average 1.0096618357487923) internal successors, (209), 208 states have internal predecessors, (209), 36 states have call successors, (36), 36 states have call predecessors, (36), 35 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-20 12:04:39,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 280 transitions. [2024-09-20 12:04:39,874 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 280 transitions. Word has length 269 [2024-09-20 12:04:39,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:04:39,878 INFO L474 AbstractCegarLoop]: Abstraction has 279 states and 280 transitions. [2024-09-20 12:04:39,878 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.731707317073171) internal successors, (112), 39 states have internal predecessors, (112), 34 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-09-20 12:04:39,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:04:39,879 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 280 transitions. [2024-09-20 12:04:39,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-09-20 12:04:39,880 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:04:39,880 INFO L216 NwaCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:04:39,903 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2024-09-20 12:04:40,081 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,66 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:04:40,081 INFO L399 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:04:40,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:04:40,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1898822956, now seen corresponding path program 65 times [2024-09-20 12:04:40,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:04:40,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450913320] [2024-09-20 12:04:40,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:04:40,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:04:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:43,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:04:43,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:43,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 12:04:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:43,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-20 12:04:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:43,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 12:04:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:43,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 12:04:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:43,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 12:04:43,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:43,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 12:04:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:43,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 12:04:43,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:43,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 12:04:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:43,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 12:04:43,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:43,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-20 12:04:43,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:43,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 12:04:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:43,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-20 12:04:43,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:43,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 12:04:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:43,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-20 12:04:43,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:43,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 12:04:43,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:43,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-20 12:04:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:43,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 12:04:43,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:43,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-20 12:04:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:43,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-20 12:04:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:43,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-20 12:04:43,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:43,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-20 12:04:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:43,035 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-20 12:04:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:43,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-20 12:04:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:43,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-20 12:04:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:43,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-20 12:04:43,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:43,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-20 12:04:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:43,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-20 12:04:43,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:43,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-20 12:04:43,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:43,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-20 12:04:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:43,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-20 12:04:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:43,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-20 12:04:43,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:43,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-20 12:04:43,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:43,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-20 12:04:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:43,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1619 proven. 658 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-20 12:04:43,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:04:43,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450913320] [2024-09-20 12:04:43,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450913320] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:04:43,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3080653] [2024-09-20 12:04:43,051 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 12:04:43,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:04:43,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:04:43,053 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:04:43,054 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-09-20 12:04:43,196 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2024-09-20 12:04:43,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:04:43,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-09-20 12:04:43,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:04:45,304 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-20 12:04:45,305 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:04:46,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-20 12:04:46,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3080653] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:04:46,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:04:46,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71, 71] total 107 [2024-09-20 12:04:46,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622288084] [2024-09-20 12:04:46,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:04:46,968 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2024-09-20 12:04:46,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:04:46,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2024-09-20 12:04:46,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2560, Invalid=8782, Unknown=0, NotChecked=0, Total=11342 [2024-09-20 12:04:46,973 INFO L87 Difference]: Start difference. First operand 279 states and 280 transitions. Second operand has 107 states, 107 states have (on average 1.7102803738317758) internal successors, (183), 107 states have internal predecessors, (183), 69 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-09-20 12:04:47,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:04:47,535 INFO L93 Difference]: Finished difference Result 390 states and 425 transitions. [2024-09-20 12:04:47,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-09-20 12:04:47,535 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 1.7102803738317758) internal successors, (183), 107 states have internal predecessors, (183), 69 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) Word has length 276 [2024-09-20 12:04:47,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:04:47,538 INFO L225 Difference]: With dead ends: 390 [2024-09-20 12:04:47,538 INFO L226 Difference]: Without dead ends: 280 [2024-09-20 12:04:47,539 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 690 GetRequests, 518 SyntacticMatches, 67 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7359 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=2560, Invalid=8782, Unknown=0, NotChecked=0, Total=11342 [2024-09-20 12:04:47,540 INFO L434 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, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 12:04:47,541 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 701 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 12:04:47,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-09-20 12:04:47,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2024-09-20 12:04:47,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 208 states have (on average 1.0096153846153846) internal successors, (210), 209 states have internal predecessors, (210), 36 states have call successors, (36), 36 states have call predecessors, (36), 35 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-20 12:04:47,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 281 transitions. [2024-09-20 12:04:47,578 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 281 transitions. Word has length 276 [2024-09-20 12:04:47,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:04:47,578 INFO L474 AbstractCegarLoop]: Abstraction has 280 states and 281 transitions. [2024-09-20 12:04:47,579 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 1.7102803738317758) internal successors, (183), 107 states have internal predecessors, (183), 69 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-09-20 12:04:47,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:04:47,579 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 281 transitions. [2024-09-20 12:04:47,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-09-20 12:04:47,580 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:04:47,580 INFO L216 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:04:47,620 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2024-09-20 12:04:47,781 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2024-09-20 12:04:47,781 INFO L399 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:04:47,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:04:47,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1687128632, now seen corresponding path program 66 times [2024-09-20 12:04:47,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:04:47,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093553104] [2024-09-20 12:04:47,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:04:47,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:04:47,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:49,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:04:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:49,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 12:04:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:49,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 12:04:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:49,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 12:04:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:49,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 12:04:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:49,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 12:04:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:49,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 12:04:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:49,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-20 12:04:49,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:49,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 12:04:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:49,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 12:04:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:49,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 12:04:49,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:49,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-20 12:04:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:49,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 12:04:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:49,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-20 12:04:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:49,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 12:04:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:49,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-20 12:04:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:49,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 12:04:49,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:49,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-20 12:04:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:49,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-20 12:04:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:49,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-20 12:04:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:49,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-20 12:04:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:49,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-20 12:04:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:49,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-20 12:04:49,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:49,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-20 12:04:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:49,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-20 12:04:49,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:49,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-20 12:04:49,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:49,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-20 12:04:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:49,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-20 12:04:49,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:49,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-20 12:04:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:49,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-20 12:04:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:49,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-20 12:04:49,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:49,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-20 12:04:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:49,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-20 12:04:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:49,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-20 12:04:49,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:49,135 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 627 proven. 1684 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-20 12:04:49,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:04:49,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093553104] [2024-09-20 12:04:49,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093553104] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:04:49,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23022104] [2024-09-20 12:04:49,136 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 12:04:49,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:04:49,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:04:49,137 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:04:49,139 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2024-09-20 12:04:49,292 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2024-09-20 12:04:49,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:04:49,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-09-20 12:04:49,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:04:49,526 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 661 proven. 1650 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-20 12:04:49,530 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:04:50,823 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 661 proven. 1650 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-20 12:04:50,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23022104] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:04:50,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:04:50,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 42 [2024-09-20 12:04:50,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167878445] [2024-09-20 12:04:50,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:04:50,825 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-09-20 12:04:50,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:04:50,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-09-20 12:04:50,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=679, Invalid=1043, Unknown=0, NotChecked=0, Total=1722 [2024-09-20 12:04:50,826 INFO L87 Difference]: Start difference. First operand 280 states and 281 transitions. Second operand has 42 states, 42 states have (on average 2.738095238095238) internal successors, (115), 40 states have internal predecessors, (115), 35 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-20 12:04:51,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:04:51,052 INFO L93 Difference]: Finished difference Result 293 states and 295 transitions. [2024-09-20 12:04:51,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-09-20 12:04:51,053 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.738095238095238) internal successors, (115), 40 states have internal predecessors, (115), 35 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 277 [2024-09-20 12:04:51,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:04:51,055 INFO L225 Difference]: With dead ends: 293 [2024-09-20 12:04:51,055 INFO L226 Difference]: Without dead ends: 291 [2024-09-20 12:04:51,056 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 585 SyntacticMatches, 68 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1558 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=685, Invalid=1121, Unknown=0, NotChecked=0, Total=1806 [2024-09-20 12:04:51,056 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 12:04:51,056 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 99 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 12:04:51,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-09-20 12:04:51,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 287. [2024-09-20 12:04:51,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 213 states have (on average 1.0093896713615023) internal successors, (215), 214 states have internal predecessors, (215), 37 states have call successors, (37), 37 states have call predecessors, (37), 36 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-20 12:04:51,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 288 transitions. [2024-09-20 12:04:51,110 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 288 transitions. Word has length 277 [2024-09-20 12:04:51,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:04:51,110 INFO L474 AbstractCegarLoop]: Abstraction has 287 states and 288 transitions. [2024-09-20 12:04:51,110 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.738095238095238) internal successors, (115), 40 states have internal predecessors, (115), 35 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-20 12:04:51,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:04:51,111 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 288 transitions. [2024-09-20 12:04:51,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-09-20 12:04:51,112 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:04:51,112 INFO L216 NwaCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:04:51,129 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2024-09-20 12:04:51,312 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2024-09-20 12:04:51,313 INFO L399 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:04:51,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:04:51,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1127844885, now seen corresponding path program 67 times [2024-09-20 12:04:51,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:04:51,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709220997] [2024-09-20 12:04:51,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:04:51,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:04:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:04:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-09-20 12:04:53,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 12:04:53,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,628 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 12:04:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 12:04:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 12:04:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 12:04:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-20 12:04:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 12:04:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 12:04:53,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 12:04:53,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-20 12:04:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 12:04:53,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,641 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-20 12:04:53,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 12:04:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-20 12:04:53,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 12:04:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-20 12:04:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-20 12:04:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-20 12:04:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-20 12:04:53,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-20 12:04:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-20 12:04:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-20 12:04:53,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-20 12:04:53,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-20 12:04:53,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-20 12:04:53,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-20 12:04:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-20 12:04:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-20 12:04:53,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-20 12:04:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-20 12:04:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-20 12:04:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-20 12:04:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-20 12:04:53,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,668 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1719 proven. 695 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-20 12:04:53,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:04:53,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709220997] [2024-09-20 12:04:53,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709220997] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:04:53,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036617588] [2024-09-20 12:04:53,669 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 12:04:53,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:04:53,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:04:53,671 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:04:53,672 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2024-09-20 12:04:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:04:53,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-09-20 12:04:53,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:04:56,006 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-20 12:04:56,007 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:04:57,690 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-20 12:04:57,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036617588] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:04:57,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:04:57,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73, 73] total 110 [2024-09-20 12:04:57,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264755837] [2024-09-20 12:04:57,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:04:57,692 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2024-09-20 12:04:57,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:04:57,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2024-09-20 12:04:57,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2705, Invalid=9285, Unknown=0, NotChecked=0, Total=11990 [2024-09-20 12:04:57,695 INFO L87 Difference]: Start difference. First operand 287 states and 288 transitions. Second operand has 110 states, 110 states have (on average 1.709090909090909) internal successors, (188), 110 states have internal predecessors, (188), 71 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2024-09-20 12:04:58,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:04:58,347 INFO L93 Difference]: Finished difference Result 401 states and 437 transitions. [2024-09-20 12:04:58,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-09-20 12:04:58,348 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 1.709090909090909) internal successors, (188), 110 states have internal predecessors, (188), 71 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) Word has length 284 [2024-09-20 12:04:58,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:04:58,351 INFO L225 Difference]: With dead ends: 401 [2024-09-20 12:04:58,351 INFO L226 Difference]: Without dead ends: 288 [2024-09-20 12:04:58,352 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 710 GetRequests, 533 SyntacticMatches, 69 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7786 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=2705, Invalid=9285, Unknown=0, NotChecked=0, Total=11990 [2024-09-20 12:04:58,352 INFO L434 NwaCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2024-09-20 12:04:58,352 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 804 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-20 12:04:58,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-09-20 12:04:58,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2024-09-20 12:04:58,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 214 states have (on average 1.0093457943925233) internal successors, (216), 215 states have internal predecessors, (216), 37 states have call successors, (37), 37 states have call predecessors, (37), 36 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-20 12:04:58,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 289 transitions. [2024-09-20 12:04:58,379 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 289 transitions. Word has length 284 [2024-09-20 12:04:58,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:04:58,379 INFO L474 AbstractCegarLoop]: Abstraction has 288 states and 289 transitions. [2024-09-20 12:04:58,383 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 1.709090909090909) internal successors, (188), 110 states have internal predecessors, (188), 71 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2024-09-20 12:04:58,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:04:58,384 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 289 transitions. [2024-09-20 12:04:58,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2024-09-20 12:04:58,385 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:04:58,385 INFO L216 NwaCegarLoop]: trace histogram [35, 35, 35, 35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:04:58,409 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2024-09-20 12:04:58,586 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-09-20 12:04:58,586 INFO L399 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:04:58,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:04:58,586 INFO L85 PathProgramCache]: Analyzing trace with hash 2134930679, now seen corresponding path program 68 times [2024-09-20 12:04:58,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:04:58,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727774165] [2024-09-20 12:04:58,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:04:58,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:04:58,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:00,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:05:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:00,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 12:05:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:00,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 12:05:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:00,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 12:05:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:00,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 12:05:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:00,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 12:05:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:00,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-20 12:05:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:00,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 12:05:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:00,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-20 12:05:00,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:00,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 12:05:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:00,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 12:05:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:00,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 12:05:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:00,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-20 12:05:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:00,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-20 12:05:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:00,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-20 12:05:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:00,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-20 12:05:00,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:00,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-20 12:05:00,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:00,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-20 12:05:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:00,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-20 12:05:00,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:00,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-20 12:05:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:00,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-20 12:05:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:00,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-20 12:05:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:00,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-20 12:05:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:00,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-20 12:05:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:00,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-20 12:05:00,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:00,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-20 12:05:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:00,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-20 12:05:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:00,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-20 12:05:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:00,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-20 12:05:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:00,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-20 12:05:00,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:00,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-20 12:05:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:00,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-20 12:05:00,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:00,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-20 12:05:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:00,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-20 12:05:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:00,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-20 12:05:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:00,397 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 663 proven. 1786 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-20 12:05:00,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:05:00,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727774165] [2024-09-20 12:05:00,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727774165] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:05:00,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113179325] [2024-09-20 12:05:00,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 12:05:00,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:05:00,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:05:00,399 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:05:00,409 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2024-09-20 12:05:00,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 12:05:00,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:05:00,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-09-20 12:05:00,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:05:00,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 698 proven. 1751 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-20 12:05:00,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:05:01,968 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 698 proven. 1751 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-20 12:05:01,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113179325] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:05:01,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:05:01,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 43 [2024-09-20 12:05:01,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041644279] [2024-09-20 12:05:01,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:05:01,969 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-09-20 12:05:01,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:05:01,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-09-20 12:05:01,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=716, Invalid=1090, Unknown=0, NotChecked=0, Total=1806 [2024-09-20 12:05:01,977 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) [2024-09-20 12:05:02,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:05:02,210 INFO L93 Difference]: Finished difference Result 301 states and 303 transitions. [2024-09-20 12:05:02,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-20 12:05:02,210 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.744186046511628) internal successors, (118), 41 states have internal predecessors, (118), 36 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Word has length 285 [2024-09-20 12:05:02,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:05:02,213 INFO L225 Difference]: With dead ends: 301 [2024-09-20 12:05:02,213 INFO L226 Difference]: Without dead ends: 299 [2024-09-20 12:05:02,213 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 600 SyntacticMatches, 72 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1711 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=722, Invalid=1170, Unknown=0, NotChecked=0, Total=1892 [2024-09-20 12:05:02,214 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 12:05:02,214 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 107 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 12:05:02,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-09-20 12:05:02,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 295. [2024-09-20 12:05:02,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 219 states have (on average 1.0091324200913243) internal successors, (221), 220 states have internal predecessors, (221), 38 states have call successors, (38), 38 states have call predecessors, (38), 37 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-20 12:05:02,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 296 transitions. [2024-09-20 12:05:02,267 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 296 transitions. Word has length 285 [2024-09-20 12:05:02,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:05:02,267 INFO L474 AbstractCegarLoop]: Abstraction has 295 states and 296 transitions. [2024-09-20 12:05:02,268 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.744186046511628) internal successors, (118), 41 states have internal predecessors, (118), 36 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-20 12:05:02,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:05:02,268 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 296 transitions. [2024-09-20 12:05:02,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2024-09-20 12:05:02,273 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:05:02,273 INFO L216 NwaCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:05:02,312 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2024-09-20 12:05:02,474 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,70 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:05:02,474 INFO L399 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:05:02,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:05:02,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1877294004, now seen corresponding path program 69 times [2024-09-20 12:05:02,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:05:02,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607984176] [2024-09-20 12:05:02,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:05:02,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:05:02,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:05:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 12:05:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 12:05:04,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 12:05:04,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 12:05:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 12:05:04,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-20 12:05:04,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 12:05:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-20 12:05:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 12:05:04,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 12:05:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 12:05:04,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-20 12:05:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-20 12:05:04,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-20 12:05:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-20 12:05:04,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-20 12:05:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-20 12:05:04,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-20 12:05:04,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-20 12:05:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-20 12:05:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-20 12:05:04,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-20 12:05:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-20 12:05:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-20 12:05:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-20 12:05:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-20 12:05:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-20 12:05:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-20 12:05:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-20 12:05:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-20 12:05:04,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-20 12:05:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-20 12:05:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-20 12:05:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-20 12:05:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-20 12:05:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:04,983 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1822 proven. 733 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-20 12:05:04,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:05:04,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607984176] [2024-09-20 12:05:04,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607984176] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:05:04,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033770648] [2024-09-20 12:05:04,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 12:05:04,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:05:04,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:05:04,986 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:05:04,988 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2024-09-20 12:05:05,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2024-09-20 12:05:05,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:05:05,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-09-20 12:05:05,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:05:07,437 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-20 12:05:07,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:05:09,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-20 12:05:09,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033770648] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:05:09,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:05:09,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75, 75] total 113 [2024-09-20 12:05:09,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012214869] [2024-09-20 12:05:09,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:05:09,320 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2024-09-20 12:05:09,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:05:09,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2024-09-20 12:05:09,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2854, Invalid=9802, Unknown=0, NotChecked=0, Total=12656 [2024-09-20 12:05:09,323 INFO L87 Difference]: Start difference. First operand 295 states and 296 transitions. Second operand has 113 states, 113 states have (on average 1.7079646017699115) internal successors, (193), 113 states have internal predecessors, (193), 73 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-09-20 12:05:09,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:05:09,958 INFO L93 Difference]: Finished difference Result 412 states and 449 transitions. [2024-09-20 12:05:09,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-09-20 12:05:09,959 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 1.7079646017699115) internal successors, (193), 113 states have internal predecessors, (193), 73 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Word has length 292 [2024-09-20 12:05:09,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:05:09,962 INFO L225 Difference]: With dead ends: 412 [2024-09-20 12:05:09,962 INFO L226 Difference]: Without dead ends: 296 [2024-09-20 12:05:09,963 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 548 SyntacticMatches, 71 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8225 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=2854, Invalid=9802, Unknown=0, NotChecked=0, Total=12656 [2024-09-20 12:05:09,963 INFO L434 NwaCegarLoop]: 80 mSDtfsCounter, 0 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 12:05:09,964 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 652 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 12:05:09,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-09-20 12:05:09,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2024-09-20 12:05:09,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 220 states have (on average 1.009090909090909) internal successors, (222), 221 states have internal predecessors, (222), 38 states have call successors, (38), 38 states have call predecessors, (38), 37 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-20 12:05:09,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 297 transitions. [2024-09-20 12:05:09,991 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 297 transitions. Word has length 292 [2024-09-20 12:05:09,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:05:09,991 INFO L474 AbstractCegarLoop]: Abstraction has 296 states and 297 transitions. [2024-09-20 12:05:09,992 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 1.7079646017699115) internal successors, (193), 113 states have internal predecessors, (193), 73 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-09-20 12:05:09,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:05:09,992 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 297 transitions. [2024-09-20 12:05:09,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2024-09-20 12:05:09,993 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:05:09,993 INFO L216 NwaCegarLoop]: trace histogram [36, 36, 36, 36, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:05:10,014 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2024-09-20 12:05:10,198 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,71 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:05:10,199 INFO L399 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:05:10,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:05:10,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1882782040, now seen corresponding path program 70 times [2024-09-20 12:05:10,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:05:10,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698392067] [2024-09-20 12:05:10,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:05:10,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:05:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:05:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-20 12:05:11,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 12:05:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-20 12:05:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 12:05:11,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-20 12:05:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 12:05:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-20 12:05:11,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 12:05:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-20 12:05:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 12:05:11,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-20 12:05:11,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 12:05:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-20 12:05:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-20 12:05:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-20 12:05:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-20 12:05:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-20 12:05:11,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-20 12:05:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-20 12:05:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-20 12:05:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-20 12:05:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-20 12:05:11,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-20 12:05:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-20 12:05:11,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-20 12:05:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-20 12:05:11,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-20 12:05:11,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-20 12:05:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-20 12:05:11,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-20 12:05:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-20 12:05:11,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-20 12:05:11,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-20 12:05:11,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-20 12:05:11,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-20 12:05:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:11,839 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 700 proven. 1891 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-20 12:05:11,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:05:11,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698392067] [2024-09-20 12:05:11,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698392067] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:05:11,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784951927] [2024-09-20 12:05:11,842 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 12:05:11,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:05:11,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:05:11,845 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:05:11,847 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2024-09-20 12:05:11,970 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 12:05:11,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:05:11,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-09-20 12:05:11,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:05:12,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 736 proven. 1855 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-20 12:05:12,204 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:05:13,581 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 736 proven. 1855 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-20 12:05:13,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784951927] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:05:13,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:05:13,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 44 [2024-09-20 12:05:13,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939906631] [2024-09-20 12:05:13,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:05:13,582 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-20 12:05:13,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:05:13,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-20 12:05:13,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=754, Invalid=1138, Unknown=0, NotChecked=0, Total=1892 [2024-09-20 12:05:13,587 INFO L87 Difference]: Start difference. First operand 296 states and 297 transitions. Second operand has 44 states, 44 states have (on average 2.75) internal successors, (121), 42 states have internal predecessors, (121), 37 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-20 12:05:13,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:05:13,947 INFO L93 Difference]: Finished difference Result 309 states and 311 transitions. [2024-09-20 12:05:13,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-09-20 12:05:13,948 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.75) internal successors, (121), 42 states have internal predecessors, (121), 37 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 293 [2024-09-20 12:05:13,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:05:13,954 INFO L225 Difference]: With dead ends: 309 [2024-09-20 12:05:13,954 INFO L226 Difference]: Without dead ends: 307 [2024-09-20 12:05:13,954 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 619 SyntacticMatches, 72 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1722 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=760, Invalid=1220, Unknown=0, NotChecked=0, Total=1980 [2024-09-20 12:05:13,955 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 12:05:13,955 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 157 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 12:05:13,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-09-20 12:05:14,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 303. [2024-09-20 12:05:14,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 225 states have (on average 1.008888888888889) internal successors, (227), 226 states have internal predecessors, (227), 39 states have call successors, (39), 39 states have call predecessors, (39), 38 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-20 12:05:14,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 304 transitions. [2024-09-20 12:05:14,009 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 304 transitions. Word has length 293 [2024-09-20 12:05:14,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:05:14,012 INFO L474 AbstractCegarLoop]: Abstraction has 303 states and 304 transitions. [2024-09-20 12:05:14,013 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.75) internal successors, (121), 42 states have internal predecessors, (121), 37 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-20 12:05:14,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:05:14,014 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 304 transitions. [2024-09-20 12:05:14,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-09-20 12:05:14,015 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:05:14,015 INFO L216 NwaCegarLoop]: trace histogram [37, 37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:05:14,049 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2024-09-20 12:05:14,219 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,72 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:05:14,220 INFO L399 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:05:14,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:05:14,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1885880117, now seen corresponding path program 71 times [2024-09-20 12:05:14,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:05:14,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614492107] [2024-09-20 12:05:14,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:05:14,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:05:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:05:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-20 12:05:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 12:05:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-20 12:05:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 12:05:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-20 12:05:16,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 12:05:16,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-20 12:05:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 12:05:16,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-20 12:05:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 12:05:16,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-20 12:05:16,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 12:05:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-20 12:05:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-20 12:05:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-20 12:05:16,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-20 12:05:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-20 12:05:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-20 12:05:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-20 12:05:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-20 12:05:16,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-20 12:05:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-20 12:05:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-20 12:05:16,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-20 12:05:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-20 12:05:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-20 12:05:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-20 12:05:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-20 12:05:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-20 12:05:16,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-20 12:05:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-20 12:05:16,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-20 12:05:16,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-20 12:05:16,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-20 12:05:16,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-20 12:05:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-20 12:05:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:16,956 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 1928 proven. 772 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-20 12:05:16,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:05:16,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614492107] [2024-09-20 12:05:16,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614492107] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:05:16,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532146810] [2024-09-20 12:05:16,956 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 12:05:16,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:05:16,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:05:16,958 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:05:16,977 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2024-09-20 12:05:17,153 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2024-09-20 12:05:17,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:05:17,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-09-20 12:05:17,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:05:19,910 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-20 12:05:19,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:05:21,932 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-20 12:05:21,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532146810] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:05:21,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:05:21,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77, 77] total 116 [2024-09-20 12:05:21,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254191173] [2024-09-20 12:05:21,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:05:21,938 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2024-09-20 12:05:21,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:05:21,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2024-09-20 12:05:21,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3007, Invalid=10333, Unknown=0, NotChecked=0, Total=13340 [2024-09-20 12:05:21,945 INFO L87 Difference]: Start difference. First operand 303 states and 304 transitions. Second operand has 116 states, 116 states have (on average 1.706896551724138) internal successors, (198), 116 states have internal predecessors, (198), 75 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2024-09-20 12:05:22,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:05:22,549 INFO L93 Difference]: Finished difference Result 423 states and 461 transitions. [2024-09-20 12:05:22,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-09-20 12:05:22,550 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 1.706896551724138) internal successors, (198), 116 states have internal predecessors, (198), 75 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) Word has length 300 [2024-09-20 12:05:22,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:05:22,557 INFO L225 Difference]: With dead ends: 423 [2024-09-20 12:05:22,557 INFO L226 Difference]: Without dead ends: 304 [2024-09-20 12:05:22,559 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 563 SyntacticMatches, 73 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8676 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=3007, Invalid=10333, Unknown=0, NotChecked=0, Total=13340 [2024-09-20 12:05:22,559 INFO L434 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 12:05:22,559 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 681 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 12:05:22,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-09-20 12:05:22,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2024-09-20 12:05:22,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 226 states have (on average 1.008849557522124) internal successors, (228), 227 states have internal predecessors, (228), 39 states have call successors, (39), 39 states have call predecessors, (39), 38 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-20 12:05:22,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 305 transitions. [2024-09-20 12:05:22,615 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 305 transitions. Word has length 300 [2024-09-20 12:05:22,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:05:22,619 INFO L474 AbstractCegarLoop]: Abstraction has 304 states and 305 transitions. [2024-09-20 12:05:22,620 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 1.706896551724138) internal successors, (198), 116 states have internal predecessors, (198), 75 states have call successors, (76), 2 states have call predecessors, (76), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2024-09-20 12:05:22,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:05:22,620 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 305 transitions. [2024-09-20 12:05:22,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-09-20 12:05:22,621 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:05:22,621 INFO L216 NwaCegarLoop]: trace histogram [37, 37, 37, 37, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:05:22,644 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2024-09-20 12:05:22,822 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,73 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:05:22,823 INFO L399 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:05:22,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:05:22,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1880741417, now seen corresponding path program 72 times [2024-09-20 12:05:22,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:05:22,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49204377] [2024-09-20 12:05:22,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:05:22,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:05:22,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:05:24,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 12:05:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-20 12:05:24,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 12:05:24,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-20 12:05:24,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 12:05:24,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-20 12:05:24,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 12:05:24,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-20 12:05:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,334 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 12:05:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-20 12:05:24,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,337 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 12:05:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,338 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-20 12:05:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,339 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-20 12:05:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-20 12:05:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-20 12:05:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-20 12:05:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-20 12:05:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-20 12:05:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-20 12:05:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-20 12:05:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-20 12:05:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-20 12:05:24,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-20 12:05:24,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-20 12:05:24,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-20 12:05:24,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-20 12:05:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-20 12:05:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-20 12:05:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-20 12:05:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-20 12:05:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-20 12:05:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-20 12:05:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-20 12:05:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-20 12:05:24,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-20 12:05:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-09-20 12:05:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:24,368 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 738 proven. 1999 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-20 12:05:24,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:05:24,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49204377] [2024-09-20 12:05:24,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49204377] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:05:24,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404007601] [2024-09-20 12:05:24,368 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 12:05:24,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:05:24,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:05:24,370 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:05:24,371 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2024-09-20 12:05:24,529 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2024-09-20 12:05:24,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:05:24,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-09-20 12:05:24,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:05:24,796 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 775 proven. 1962 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-20 12:05:24,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:05:26,438 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 775 proven. 1962 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-09-20 12:05:26,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404007601] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:05:26,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:05:26,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 45 [2024-09-20 12:05:26,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127550888] [2024-09-20 12:05:26,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:05:26,440 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-20 12:05:26,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:05:26,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-20 12:05:26,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=793, Invalid=1187, Unknown=0, NotChecked=0, Total=1980 [2024-09-20 12:05:26,445 INFO L87 Difference]: Start difference. First operand 304 states and 305 transitions. Second operand has 45 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 43 states have internal predecessors, (124), 38 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-20 12:05:26,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:05:26,732 INFO L93 Difference]: Finished difference Result 317 states and 319 transitions. [2024-09-20 12:05:26,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-20 12:05:26,733 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 43 states have internal predecessors, (124), 38 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 301 [2024-09-20 12:05:26,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:05:26,735 INFO L225 Difference]: With dead ends: 317 [2024-09-20 12:05:26,736 INFO L226 Difference]: Without dead ends: 315 [2024-09-20 12:05:26,736 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 636 SyntacticMatches, 74 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1807 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=799, Invalid=1271, Unknown=0, NotChecked=0, Total=2070 [2024-09-20 12:05:26,740 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 12:05:26,740 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 113 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 12:05:26,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-09-20 12:05:26,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 311. [2024-09-20 12:05:26,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 231 states have (on average 1.0086580086580086) internal successors, (233), 232 states have internal predecessors, (233), 40 states have call successors, (40), 40 states have call predecessors, (40), 39 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-20 12:05:26,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 312 transitions. [2024-09-20 12:05:26,774 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 312 transitions. Word has length 301 [2024-09-20 12:05:26,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:05:26,775 INFO L474 AbstractCegarLoop]: Abstraction has 311 states and 312 transitions. [2024-09-20 12:05:26,775 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 43 states have internal predecessors, (124), 38 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-20 12:05:26,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:05:26,775 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 312 transitions. [2024-09-20 12:05:26,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-09-20 12:05:26,788 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:05:26,788 INFO L216 NwaCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:05:26,830 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2024-09-20 12:05:26,989 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,74 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:05:26,989 INFO L399 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:05:26,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:05:26,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1536568468, now seen corresponding path program 73 times [2024-09-20 12:05:26,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:05:26,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909648546] [2024-09-20 12:05:26,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:05:26,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:05:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:05:29,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 12:05:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-09-20 12:05:29,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 12:05:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-09-20 12:05:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 12:05:29,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-09-20 12:05:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 12:05:29,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-09-20 12:05:29,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 12:05:29,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-09-20 12:05:29,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 12:05:29,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-09-20 12:05:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-20 12:05:29,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-09-20 12:05:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-20 12:05:29,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-09-20 12:05:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-20 12:05:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-09-20 12:05:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-20 12:05:29,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-09-20 12:05:29,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-20 12:05:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-09-20 12:05:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-20 12:05:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-09-20 12:05:29,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-20 12:05:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-09-20 12:05:29,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-20 12:05:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-09-20 12:05:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-20 12:05:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-09-20 12:05:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-20 12:05:29,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-09-20 12:05:29,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-20 12:05:29,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-09-20 12:05:29,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-20 12:05:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-09-20 12:05:29,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-20 12:05:29,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,768 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2037 proven. 812 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-20 12:05:29,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:05:29,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909648546] [2024-09-20 12:05:29,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909648546] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:05:29,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629434241] [2024-09-20 12:05:29,769 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 12:05:29,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:05:29,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:05:29,771 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:05:29,771 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2024-09-20 12:05:29,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:29,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-09-20 12:05:29,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:05:32,420 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-20 12:05:32,420 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:05:34,510 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-20 12:05:34,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629434241] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:05:34,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:05:34,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79, 79] total 119 [2024-09-20 12:05:34,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119273552] [2024-09-20 12:05:34,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:05:34,512 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2024-09-20 12:05:34,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:05:34,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2024-09-20 12:05:34,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3164, Invalid=10878, Unknown=0, NotChecked=0, Total=14042 [2024-09-20 12:05:34,514 INFO L87 Difference]: Start difference. First operand 311 states and 312 transitions. Second operand has 119 states, 119 states have (on average 1.7058823529411764) internal successors, (203), 119 states have internal predecessors, (203), 77 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2024-09-20 12:05:35,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:05:35,191 INFO L93 Difference]: Finished difference Result 434 states and 473 transitions. [2024-09-20 12:05:35,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-09-20 12:05:35,192 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 1.7058823529411764) internal successors, (203), 119 states have internal predecessors, (203), 77 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) Word has length 308 [2024-09-20 12:05:35,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:05:35,195 INFO L225 Difference]: With dead ends: 434 [2024-09-20 12:05:35,195 INFO L226 Difference]: Without dead ends: 312 [2024-09-20 12:05:35,196 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 770 GetRequests, 578 SyntacticMatches, 75 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9139 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=3164, Invalid=10878, Unknown=0, NotChecked=0, Total=14042 [2024-09-20 12:05:35,200 INFO L434 NwaCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2024-09-20 12:05:35,201 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 600 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-20 12:05:35,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-09-20 12:05:35,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2024-09-20 12:05:35,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 232 states have (on average 1.0086206896551724) internal successors, (234), 233 states have internal predecessors, (234), 40 states have call successors, (40), 40 states have call predecessors, (40), 39 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-20 12:05:35,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 313 transitions. [2024-09-20 12:05:35,261 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 313 transitions. Word has length 308 [2024-09-20 12:05:35,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:05:35,262 INFO L474 AbstractCegarLoop]: Abstraction has 312 states and 313 transitions. [2024-09-20 12:05:35,262 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 1.7058823529411764) internal successors, (203), 119 states have internal predecessors, (203), 77 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2024-09-20 12:05:35,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:05:35,266 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 313 transitions. [2024-09-20 12:05:35,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-09-20 12:05:35,268 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:05:35,268 INFO L216 NwaCegarLoop]: trace histogram [38, 38, 38, 38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:05:35,309 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2024-09-20 12:05:35,468 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,75 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:05:35,469 INFO L399 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:05:35,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:05:35,469 INFO L85 PathProgramCache]: Analyzing trace with hash 2071228536, now seen corresponding path program 74 times [2024-09-20 12:05:35,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:05:35,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300145723] [2024-09-20 12:05:35,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:05:35,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:05:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:05:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 12:05:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 12:05:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-20 12:05:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 12:05:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-20 12:05:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 12:05:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-20 12:05:37,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 12:05:37,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-20 12:05:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 12:05:37,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-20 12:05:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 12:05:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,431 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-20 12:05:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,434 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-20 12:05:37,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,435 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-20 12:05:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,437 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-20 12:05:37,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,439 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-20 12:05:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-20 12:05:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,442 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-20 12:05:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,443 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-20 12:05:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,445 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-20 12:05:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,446 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-20 12:05:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,448 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-20 12:05:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-20 12:05:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-20 12:05:37,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-20 12:05:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-20 12:05:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-20 12:05:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-20 12:05:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-20 12:05:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-20 12:05:37,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-20 12:05:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-09-20 12:05:37,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-20 12:05:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-09-20 12:05:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-20 12:05:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-09-20 12:05:37,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:37,481 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 777 proven. 2110 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-20 12:05:37,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:05:37,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300145723] [2024-09-20 12:05:37,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300145723] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:05:37,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801667098] [2024-09-20 12:05:37,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 12:05:37,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:05:37,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:05:37,483 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:05:37,485 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2024-09-20 12:05:37,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 12:05:37,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:05:37,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-09-20 12:05:37,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:05:37,852 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 815 proven. 2072 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-20 12:05:37,853 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:05:39,390 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 815 proven. 2072 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-20 12:05:39,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801667098] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:05:39,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:05:39,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 46 [2024-09-20 12:05:39,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193042413] [2024-09-20 12:05:39,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:05:39,392 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-20 12:05:39,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:05:39,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-20 12:05:39,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=833, Invalid=1237, Unknown=0, NotChecked=0, Total=2070 [2024-09-20 12:05:39,394 INFO L87 Difference]: Start difference. First operand 312 states and 313 transitions. Second operand has 46 states, 46 states have (on average 2.760869565217391) internal successors, (127), 44 states have internal predecessors, (127), 39 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-20 12:05:39,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:05:39,693 INFO L93 Difference]: Finished difference Result 325 states and 327 transitions. [2024-09-20 12:05:39,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-09-20 12:05:39,694 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.760869565217391) internal successors, (127), 44 states have internal predecessors, (127), 39 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 309 [2024-09-20 12:05:39,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:05:39,696 INFO L225 Difference]: With dead ends: 325 [2024-09-20 12:05:39,696 INFO L226 Difference]: Without dead ends: 323 [2024-09-20 12:05:39,697 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 651 SyntacticMatches, 78 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1972 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=839, Invalid=1323, Unknown=0, NotChecked=0, Total=2162 [2024-09-20 12:05:39,698 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 12:05:39,699 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 138 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 12:05:39,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-09-20 12:05:39,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 319. [2024-09-20 12:05:39,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 237 states have (on average 1.0084388185654007) internal successors, (239), 238 states have internal predecessors, (239), 41 states have call successors, (41), 41 states have call predecessors, (41), 40 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-20 12:05:39,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 320 transitions. [2024-09-20 12:05:39,729 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 320 transitions. Word has length 309 [2024-09-20 12:05:39,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:05:39,729 INFO L474 AbstractCegarLoop]: Abstraction has 319 states and 320 transitions. [2024-09-20 12:05:39,730 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.760869565217391) internal successors, (127), 44 states have internal predecessors, (127), 39 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-09-20 12:05:39,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:05:39,730 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 320 transitions. [2024-09-20 12:05:39,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2024-09-20 12:05:39,735 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:05:39,735 INFO L216 NwaCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:05:39,754 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2024-09-20 12:05:39,936 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,76 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:05:39,936 INFO L399 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:05:39,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:05:39,937 INFO L85 PathProgramCache]: Analyzing trace with hash 603850155, now seen corresponding path program 75 times [2024-09-20 12:05:39,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:05:39,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764213949] [2024-09-20 12:05:39,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:05:39,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:05:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:05:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-20 12:05:42,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 12:05:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-09-20 12:05:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 12:05:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-09-20 12:05:42,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 12:05:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-09-20 12:05:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 12:05:42,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-09-20 12:05:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 12:05:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-09-20 12:05:42,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,832 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 12:05:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-09-20 12:05:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-20 12:05:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-09-20 12:05:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-20 12:05:42,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-09-20 12:05:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-20 12:05:42,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-09-20 12:05:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-20 12:05:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-09-20 12:05:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-20 12:05:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-09-20 12:05:42,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-20 12:05:42,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-09-20 12:05:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-20 12:05:42,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-09-20 12:05:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-20 12:05:42,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-09-20 12:05:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-20 12:05:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-09-20 12:05:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-20 12:05:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-09-20 12:05:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-20 12:05:42,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-09-20 12:05:42,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-20 12:05:42,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-09-20 12:05:42,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-20 12:05:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:42,872 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2149 proven. 853 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-20 12:05:42,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:05:42,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764213949] [2024-09-20 12:05:42,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764213949] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:05:42,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410281527] [2024-09-20 12:05:42,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 12:05:42,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:05:42,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:05:42,874 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:05:42,876 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2024-09-20 12:05:43,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2024-09-20 12:05:43,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:05:43,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-09-20 12:05:43,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:05:45,701 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-20 12:05:45,701 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:05:47,854 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-20 12:05:47,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410281527] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:05:47,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:05:47,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81, 81] total 122 [2024-09-20 12:05:47,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687542823] [2024-09-20 12:05:47,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:05:47,859 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2024-09-20 12:05:47,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:05:47,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2024-09-20 12:05:47,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3325, Invalid=11437, Unknown=0, NotChecked=0, Total=14762 [2024-09-20 12:05:47,867 INFO L87 Difference]: Start difference. First operand 319 states and 320 transitions. Second operand has 122 states, 122 states have (on average 1.7049180327868851) internal successors, (208), 122 states have internal predecessors, (208), 79 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2024-09-20 12:05:48,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:05:48,984 INFO L93 Difference]: Finished difference Result 445 states and 485 transitions. [2024-09-20 12:05:48,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-09-20 12:05:48,985 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 1.7049180327868851) internal successors, (208), 122 states have internal predecessors, (208), 79 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) Word has length 316 [2024-09-20 12:05:48,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:05:48,992 INFO L225 Difference]: With dead ends: 445 [2024-09-20 12:05:48,992 INFO L226 Difference]: Without dead ends: 320 [2024-09-20 12:05:48,995 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 790 GetRequests, 593 SyntacticMatches, 77 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9614 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=3325, Invalid=11437, Unknown=0, NotChecked=0, Total=14762 [2024-09-20 12:05:48,998 INFO L434 NwaCegarLoop]: 86 mSDtfsCounter, 0 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.8s IncrementalHoareTripleChecker+Time [2024-09-20 12:05:48,999 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 930 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-20 12:05:48,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-09-20 12:05:49,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2024-09-20 12:05:49,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 238 states have (on average 1.0084033613445378) internal successors, (240), 239 states have internal predecessors, (240), 41 states have call successors, (41), 41 states have call predecessors, (41), 40 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-20 12:05:49,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 321 transitions. [2024-09-20 12:05:49,054 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 321 transitions. Word has length 316 [2024-09-20 12:05:49,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:05:49,054 INFO L474 AbstractCegarLoop]: Abstraction has 320 states and 321 transitions. [2024-09-20 12:05:49,054 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 1.7049180327868851) internal successors, (208), 122 states have internal predecessors, (208), 79 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2024-09-20 12:05:49,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:05:49,055 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 321 transitions. [2024-09-20 12:05:49,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-09-20 12:05:49,061 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:05:49,061 INFO L216 NwaCegarLoop]: trace histogram [39, 39, 39, 39, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:05:49,078 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2024-09-20 12:05:49,265 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2024-09-20 12:05:49,266 INFO L399 AbstractCegarLoop]: === Iteration 79 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:05:49,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:05:49,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1011930807, now seen corresponding path program 76 times [2024-09-20 12:05:49,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:05:49,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919807795] [2024-09-20 12:05:49,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:05:49,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:05:49,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:50,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:05:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-20 12:05:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-20 12:05:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 12:05:51,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 12:05:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 12:05:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-20 12:05:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 12:05:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-20 12:05:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 12:05:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-20 12:05:51,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 12:05:51,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-20 12:05:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 12:05:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-20 12:05:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-20 12:05:51,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-20 12:05:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-20 12:05:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-20 12:05:51,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 12:05:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-20 12:05:51,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-20 12:05:51,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-20 12:05:51,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-20 12:05:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-20 12:05:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-20 12:05:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-20 12:05:51,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-20 12:05:51,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-20 12:05:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-20 12:05:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-20 12:05:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-20 12:05:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-09-20 12:05:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-20 12:05:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-09-20 12:05:51,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-20 12:05:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-09-20 12:05:51,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-20 12:05:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-09-20 12:05:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:51,069 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 817 proven. 2224 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-20 12:05:51,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:05:51,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919807795] [2024-09-20 12:05:51,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919807795] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:05:51,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702200932] [2024-09-20 12:05:51,074 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 12:05:51,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:05:51,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:05:51,076 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:05:51,078 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2024-09-20 12:05:51,216 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 12:05:51,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:05:51,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-09-20 12:05:51,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:05:51,426 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 856 proven. 2185 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-20 12:05:51,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:05:52,891 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 856 proven. 2185 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-09-20 12:05:52,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702200932] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:05:52,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:05:52,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 47 [2024-09-20 12:05:52,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671728912] [2024-09-20 12:05:52,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:05:52,892 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-09-20 12:05:52,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:05:52,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-09-20 12:05:52,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=874, Invalid=1288, Unknown=0, NotChecked=0, Total=2162 [2024-09-20 12:05:52,894 INFO L87 Difference]: Start difference. First operand 320 states and 321 transitions. Second operand has 47 states, 47 states have (on average 2.765957446808511) internal successors, (130), 45 states have internal predecessors, (130), 40 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-20 12:05:53,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:05:53,227 INFO L93 Difference]: Finished difference Result 333 states and 335 transitions. [2024-09-20 12:05:53,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-20 12:05:53,227 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.765957446808511) internal successors, (130), 45 states have internal predecessors, (130), 40 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 317 [2024-09-20 12:05:53,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:05:53,230 INFO L225 Difference]: With dead ends: 333 [2024-09-20 12:05:53,230 INFO L226 Difference]: Without dead ends: 331 [2024-09-20 12:05:53,231 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 794 GetRequests, 670 SyntacticMatches, 78 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1983 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=880, Invalid=1376, Unknown=0, NotChecked=0, Total=2256 [2024-09-20 12:05:53,231 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 12:05:53,233 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 160 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 12:05:53,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-09-20 12:05:53,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 327. [2024-09-20 12:05:53,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 243 states have (on average 1.008230452674897) internal successors, (245), 244 states have internal predecessors, (245), 42 states have call successors, (42), 42 states have call predecessors, (42), 41 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-20 12:05:53,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 328 transitions. [2024-09-20 12:05:53,269 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 328 transitions. Word has length 317 [2024-09-20 12:05:53,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:05:53,272 INFO L474 AbstractCegarLoop]: Abstraction has 327 states and 328 transitions. [2024-09-20 12:05:53,273 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.765957446808511) internal successors, (130), 45 states have internal predecessors, (130), 40 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-20 12:05:53,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:05:53,273 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 328 transitions. [2024-09-20 12:05:53,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-09-20 12:05:53,274 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:05:53,278 INFO L216 NwaCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:05:53,306 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2024-09-20 12:05:53,479 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2024-09-20 12:05:53,479 INFO L399 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:05:53,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:05:53,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1005382284, now seen corresponding path program 77 times [2024-09-20 12:05:53,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:05:53,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269625276] [2024-09-20 12:05:53,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:05:53,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:05:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:05:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-20 12:05:56,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-09-20 12:05:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 12:05:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-09-20 12:05:56,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 12:05:56,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-20 12:05:56,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 12:05:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-09-20 12:05:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 12:05:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-09-20 12:05:56,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 12:05:56,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-09-20 12:05:56,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 12:05:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-09-20 12:05:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-20 12:05:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-09-20 12:05:56,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-20 12:05:56,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-09-20 12:05:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 12:05:56,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-09-20 12:05:56,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-20 12:05:56,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-09-20 12:05:56,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-20 12:05:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-09-20 12:05:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-20 12:05:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-09-20 12:05:56,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-20 12:05:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-09-20 12:05:56,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-20 12:05:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-09-20 12:05:56,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-20 12:05:56,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-09-20 12:05:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-20 12:05:56,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-09-20 12:05:56,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-20 12:05:56,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-09-20 12:05:56,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-20 12:05:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-09-20 12:05:56,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-20 12:05:56,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:05:56,614 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2264 proven. 895 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-20 12:05:56,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:05:56,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269625276] [2024-09-20 12:05:56,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269625276] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:05:56,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409218328] [2024-09-20 12:05:56,614 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 12:05:56,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:05:56,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:05:56,617 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:05:56,618 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2024-09-20 12:05:56,840 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2024-09-20 12:05:56,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:05:56,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-09-20 12:05:56,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:05:59,583 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-20 12:05:59,583 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:06:01,881 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-20 12:06:01,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409218328] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:06:01,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:06:01,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83, 83] total 125 [2024-09-20 12:06:01,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400562020] [2024-09-20 12:06:01,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:06:01,883 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2024-09-20 12:06:01,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:06:01,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2024-09-20 12:06:01,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3490, Invalid=12010, Unknown=0, NotChecked=0, Total=15500 [2024-09-20 12:06:01,887 INFO L87 Difference]: Start difference. First operand 327 states and 328 transitions. Second operand has 125 states, 125 states have (on average 1.704) internal successors, (213), 125 states have internal predecessors, (213), 81 states have call successors, (82), 2 states have call predecessors, (82), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2024-09-20 12:06:02,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:06:02,827 INFO L93 Difference]: Finished difference Result 456 states and 497 transitions. [2024-09-20 12:06:02,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-09-20 12:06:02,828 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 125 states have (on average 1.704) internal successors, (213), 125 states have internal predecessors, (213), 81 states have call successors, (82), 2 states have call predecessors, (82), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) Word has length 324 [2024-09-20 12:06:02,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:06:02,831 INFO L225 Difference]: With dead ends: 456 [2024-09-20 12:06:02,831 INFO L226 Difference]: Without dead ends: 328 [2024-09-20 12:06:02,833 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 810 GetRequests, 608 SyntacticMatches, 79 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10101 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=3490, Invalid=12010, Unknown=0, NotChecked=0, Total=15500 [2024-09-20 12:06:02,833 INFO L434 NwaCegarLoop]: 88 mSDtfsCounter, 0 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2024-09-20 12:06:02,833 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 983 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-20 12:06:02,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-09-20 12:06:02,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2024-09-20 12:06:02,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 244 states have (on average 1.0081967213114753) internal successors, (246), 245 states have internal predecessors, (246), 42 states have call successors, (42), 42 states have call predecessors, (42), 41 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-20 12:06:02,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 329 transitions. [2024-09-20 12:06:02,868 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 329 transitions. Word has length 324 [2024-09-20 12:06:02,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:06:02,868 INFO L474 AbstractCegarLoop]: Abstraction has 328 states and 329 transitions. [2024-09-20 12:06:02,869 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 125 states have (on average 1.704) internal successors, (213), 125 states have internal predecessors, (213), 81 states have call successors, (82), 2 states have call predecessors, (82), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2024-09-20 12:06:02,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:06:02,869 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 329 transitions. [2024-09-20 12:06:02,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2024-09-20 12:06:02,871 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:06:02,871 INFO L216 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:06:02,889 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2024-09-20 12:06:03,074 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,79 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:06:03,075 INFO L399 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:06:03,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:06:03,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1273761896, now seen corresponding path program 78 times [2024-09-20 12:06:03,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:06:03,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877612454] [2024-09-20 12:06:03,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:06:03,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:06:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:06:04,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-20 12:06:04,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 12:06:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 12:06:04,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 12:06:04,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 12:06:04,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 12:06:04,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 12:06:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 12:06:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-20 12:06:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 12:06:04,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-20 12:06:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 12:06:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-20 12:06:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 12:06:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-20 12:06:04,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 12:06:04,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-20 12:06:04,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-20 12:06:04,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-20 12:06:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-20 12:06:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-20 12:06:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-20 12:06:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-20 12:06:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-20 12:06:04,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-20 12:06:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-20 12:06:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-20 12:06:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-20 12:06:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-20 12:06:04,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-20 12:06:04,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-20 12:06:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-20 12:06:04,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-09-20 12:06:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-20 12:06:04,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-09-20 12:06:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-20 12:06:04,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-09-20 12:06:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-20 12:06:04,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-09-20 12:06:04,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:04,926 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 858 proven. 2341 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-20 12:06:04,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:06:04,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877612454] [2024-09-20 12:06:04,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877612454] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:06:04,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583971412] [2024-09-20 12:06:04,930 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 12:06:04,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:06:04,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:06:04,932 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:06:04,933 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2024-09-20 12:06:05,119 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2024-09-20 12:06:05,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:06:05,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-09-20 12:06:05,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:06:05,333 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 898 proven. 2301 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-20 12:06:05,333 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:06:07,488 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 898 proven. 2301 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-20 12:06:07,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583971412] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:06:07,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:06:07,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 48 [2024-09-20 12:06:07,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839535564] [2024-09-20 12:06:07,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:06:07,490 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-09-20 12:06:07,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:06:07,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-09-20 12:06:07,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=916, Invalid=1340, Unknown=0, NotChecked=0, Total=2256 [2024-09-20 12:06:07,491 INFO L87 Difference]: Start difference. First operand 328 states and 329 transitions. Second operand has 48 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 46 states have internal predecessors, (133), 41 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-20 12:06:07,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:06:07,773 INFO L93 Difference]: Finished difference Result 341 states and 343 transitions. [2024-09-20 12:06:07,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-09-20 12:06:07,773 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 46 states have internal predecessors, (133), 41 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 325 [2024-09-20 12:06:07,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:06:07,776 INFO L225 Difference]: With dead ends: 341 [2024-09-20 12:06:07,776 INFO L226 Difference]: Without dead ends: 339 [2024-09-20 12:06:07,777 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 814 GetRequests, 687 SyntacticMatches, 80 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2074 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=922, Invalid=1430, Unknown=0, NotChecked=0, Total=2352 [2024-09-20 12:06:07,778 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2024-09-20 12:06:07,778 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 98 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 12:06:07,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2024-09-20 12:06:07,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 335. [2024-09-20 12:06:07,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 249 states have (on average 1.0080321285140563) internal successors, (251), 250 states have internal predecessors, (251), 43 states have call successors, (43), 43 states have call predecessors, (43), 42 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-20 12:06:07,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 336 transitions. [2024-09-20 12:06:07,811 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 336 transitions. Word has length 325 [2024-09-20 12:06:07,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:06:07,812 INFO L474 AbstractCegarLoop]: Abstraction has 335 states and 336 transitions. [2024-09-20 12:06:07,812 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 46 states have internal predecessors, (133), 41 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-09-20 12:06:07,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:06:07,816 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 336 transitions. [2024-09-20 12:06:07,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-09-20 12:06:07,818 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:06:07,818 INFO L216 NwaCegarLoop]: trace histogram [41, 41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:06:07,851 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2024-09-20 12:06:08,018 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,80 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:06:08,019 INFO L399 AbstractCegarLoop]: === Iteration 82 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:06:08,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:06:08,019 INFO L85 PathProgramCache]: Analyzing trace with hash 2078753419, now seen corresponding path program 79 times [2024-09-20 12:06:08,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:06:08,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975003723] [2024-09-20 12:06:08,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:06:08,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:06:08,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:06:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-09-20 12:06:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 12:06:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-09-20 12:06:11,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 12:06:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-09-20 12:06:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 12:06:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-09-20 12:06:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 12:06:11,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-09-20 12:06:11,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 12:06:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-09-20 12:06:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 12:06:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-09-20 12:06:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 12:06:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-09-20 12:06:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 12:06:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-09-20 12:06:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-20 12:06:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-09-20 12:06:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-20 12:06:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-09-20 12:06:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-20 12:06:11,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-09-20 12:06:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-20 12:06:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-09-20 12:06:11,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-20 12:06:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-09-20 12:06:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-20 12:06:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-09-20 12:06:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-20 12:06:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-09-20 12:06:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-20 12:06:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-09-20 12:06:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-20 12:06:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-09-20 12:06:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-20 12:06:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-09-20 12:06:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-20 12:06:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,427 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-09-20 12:06:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-20 12:06:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,430 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2382 proven. 938 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-20 12:06:11,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:06:11,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975003723] [2024-09-20 12:06:11,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975003723] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:06:11,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339544418] [2024-09-20 12:06:11,431 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 12:06:11,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:06:11,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:06:11,433 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:06:11,434 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2024-09-20 12:06:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:11,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-09-20 12:06:11,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:06:14,458 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-20 12:06:14,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:06:16,833 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-20 12:06:16,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339544418] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:06:16,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:06:16,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85, 85] total 128 [2024-09-20 12:06:16,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779702090] [2024-09-20 12:06:16,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:06:16,838 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2024-09-20 12:06:16,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:06:16,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2024-09-20 12:06:16,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3659, Invalid=12597, Unknown=0, NotChecked=0, Total=16256 [2024-09-20 12:06:16,842 INFO L87 Difference]: Start difference. First operand 335 states and 336 transitions. Second operand has 128 states, 128 states have (on average 1.703125) internal successors, (218), 128 states have internal predecessors, (218), 83 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2024-09-20 12:06:17,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:06:17,612 INFO L93 Difference]: Finished difference Result 467 states and 509 transitions. [2024-09-20 12:06:17,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-09-20 12:06:17,613 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 1.703125) internal successors, (218), 128 states have internal predecessors, (218), 83 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) Word has length 332 [2024-09-20 12:06:17,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:06:17,619 INFO L225 Difference]: With dead ends: 467 [2024-09-20 12:06:17,619 INFO L226 Difference]: Without dead ends: 336 [2024-09-20 12:06:17,621 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 623 SyntacticMatches, 81 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10600 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=3659, Invalid=12597, Unknown=0, NotChecked=0, Total=16256 [2024-09-20 12:06:17,624 INFO L434 NwaCegarLoop]: 90 mSDtfsCounter, 0 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2024-09-20 12:06:17,624 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 793 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1128 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-20 12:06:17,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-09-20 12:06:17,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2024-09-20 12:06:17,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 250 states have (on average 1.008) internal successors, (252), 251 states have internal predecessors, (252), 43 states have call successors, (43), 43 states have call predecessors, (43), 42 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-20 12:06:17,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 337 transitions. [2024-09-20 12:06:17,693 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 337 transitions. Word has length 332 [2024-09-20 12:06:17,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:06:17,695 INFO L474 AbstractCegarLoop]: Abstraction has 336 states and 337 transitions. [2024-09-20 12:06:17,696 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 1.703125) internal successors, (218), 128 states have internal predecessors, (218), 83 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2024-09-20 12:06:17,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:06:17,696 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 337 transitions. [2024-09-20 12:06:17,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2024-09-20 12:06:17,701 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:06:17,701 INFO L216 NwaCegarLoop]: trace histogram [41, 41, 41, 41, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:06:17,739 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2024-09-20 12:06:17,902 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,81 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:06:17,902 INFO L399 AbstractCegarLoop]: === Iteration 83 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:06:17,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:06:17,903 INFO L85 PathProgramCache]: Analyzing trace with hash 644774807, now seen corresponding path program 80 times [2024-09-20 12:06:17,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:06:17,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252166684] [2024-09-20 12:06:17,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:06:17,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:06:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:06:19,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 12:06:19,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 12:06:19,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 12:06:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 12:06:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 12:06:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-20 12:06:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 12:06:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 12:06:19,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 12:06:19,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-20 12:06:19,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 12:06:19,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-20 12:06:19,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 12:06:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-20 12:06:19,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 12:06:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-20 12:06:19,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-20 12:06:19,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-20 12:06:19,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-20 12:06:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-20 12:06:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-20 12:06:19,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-20 12:06:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-20 12:06:19,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-20 12:06:19,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-20 12:06:19,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-20 12:06:19,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-20 12:06:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-20 12:06:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-20 12:06:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-20 12:06:19,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-20 12:06:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-20 12:06:19,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-20 12:06:19,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-09-20 12:06:19,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-20 12:06:19,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-09-20 12:06:19,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-20 12:06:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-09-20 12:06:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-20 12:06:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-09-20 12:06:19,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:19,800 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 900 proven. 2461 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-20 12:06:19,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:06:19,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252166684] [2024-09-20 12:06:19,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252166684] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:06:19,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307007084] [2024-09-20 12:06:19,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 12:06:19,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:06:19,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:06:19,802 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:06:19,803 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2024-09-20 12:06:19,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 12:06:19,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:06:19,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-09-20 12:06:19,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:06:20,161 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 941 proven. 2420 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-20 12:06:20,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:06:21,797 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 941 proven. 2420 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-09-20 12:06:21,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307007084] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:06:21,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:06:21,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 49 [2024-09-20 12:06:21,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139750889] [2024-09-20 12:06:21,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:06:21,799 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-20 12:06:21,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:06:21,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-20 12:06:21,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=959, Invalid=1393, Unknown=0, NotChecked=0, Total=2352 [2024-09-20 12:06:21,800 INFO L87 Difference]: Start difference. First operand 336 states and 337 transitions. Second operand has 49 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 47 states have internal predecessors, (136), 42 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-20 12:06:22,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:06:22,151 INFO L93 Difference]: Finished difference Result 349 states and 351 transitions. [2024-09-20 12:06:22,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-20 12:06:22,151 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 47 states have internal predecessors, (136), 42 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Word has length 333 [2024-09-20 12:06:22,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:06:22,154 INFO L225 Difference]: With dead ends: 349 [2024-09-20 12:06:22,154 INFO L226 Difference]: Without dead ends: 347 [2024-09-20 12:06:22,155 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 702 SyntacticMatches, 84 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2251 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=965, Invalid=1485, Unknown=0, NotChecked=0, Total=2450 [2024-09-20 12:06:22,155 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 12:06:22,155 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 155 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 12:06:22,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-09-20 12:06:22,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 343. [2024-09-20 12:06:22,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 255 states have (on average 1.007843137254902) internal successors, (257), 256 states have internal predecessors, (257), 44 states have call successors, (44), 44 states have call predecessors, (44), 43 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-20 12:06:22,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 344 transitions. [2024-09-20 12:06:22,198 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 344 transitions. Word has length 333 [2024-09-20 12:06:22,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:06:22,199 INFO L474 AbstractCegarLoop]: Abstraction has 343 states and 344 transitions. [2024-09-20 12:06:22,199 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 47 states have internal predecessors, (136), 42 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-20 12:06:22,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:06:22,199 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 344 transitions. [2024-09-20 12:06:22,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2024-09-20 12:06:22,201 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:06:22,204 INFO L216 NwaCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:06:22,228 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2024-09-20 12:06:22,404 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2024-09-20 12:06:22,405 INFO L399 AbstractCegarLoop]: === Iteration 84 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:06:22,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:06:22,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1291192748, now seen corresponding path program 81 times [2024-09-20 12:06:22,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:06:22,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627848646] [2024-09-20 12:06:22,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:06:22,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:06:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:06:25,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 12:06:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-09-20 12:06:25,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 12:06:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-20 12:06:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 12:06:25,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-09-20 12:06:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 12:06:25,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-20 12:06:25,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 12:06:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-09-20 12:06:25,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 12:06:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-09-20 12:06:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 12:06:25,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-09-20 12:06:25,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 12:06:25,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-09-20 12:06:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-20 12:06:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-09-20 12:06:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-20 12:06:25,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-09-20 12:06:25,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-20 12:06:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-09-20 12:06:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-20 12:06:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-09-20 12:06:25,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-20 12:06:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-09-20 12:06:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-20 12:06:25,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-09-20 12:06:25,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-20 12:06:25,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-09-20 12:06:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-20 12:06:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-09-20 12:06:25,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-20 12:06:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-09-20 12:06:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-20 12:06:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-09-20 12:06:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-20 12:06:25,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-09-20 12:06:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-20 12:06:25,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-09-20 12:06:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-20 12:06:25,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:25,975 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2503 proven. 982 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-20 12:06:25,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:06:25,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627848646] [2024-09-20 12:06:25,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627848646] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:06:25,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687299418] [2024-09-20 12:06:25,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 12:06:25,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:06:25,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:06:25,978 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:06:25,980 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2024-09-20 12:06:26,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2024-09-20 12:06:26,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:06:26,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-09-20 12:06:26,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:06:29,199 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-20 12:06:29,199 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:06:31,634 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-20 12:06:31,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687299418] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:06:31,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:06:31,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87, 87] total 131 [2024-09-20 12:06:31,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966597699] [2024-09-20 12:06:31,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:06:31,636 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2024-09-20 12:06:31,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:06:31,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2024-09-20 12:06:31,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3832, Invalid=13198, Unknown=0, NotChecked=0, Total=17030 [2024-09-20 12:06:31,640 INFO L87 Difference]: Start difference. First operand 343 states and 344 transitions. Second operand has 131 states, 131 states have (on average 1.702290076335878) internal successors, (223), 131 states have internal predecessors, (223), 85 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2024-09-20 12:06:32,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:06:32,510 INFO L93 Difference]: Finished difference Result 478 states and 521 transitions. [2024-09-20 12:06:32,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-09-20 12:06:32,510 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 1.702290076335878) internal successors, (223), 131 states have internal predecessors, (223), 85 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) Word has length 340 [2024-09-20 12:06:32,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:06:32,513 INFO L225 Difference]: With dead ends: 478 [2024-09-20 12:06:32,513 INFO L226 Difference]: Without dead ends: 344 [2024-09-20 12:06:32,515 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 850 GetRequests, 638 SyntacticMatches, 83 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11111 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=3832, Invalid=13198, Unknown=0, NotChecked=0, Total=17030 [2024-09-20 12:06:32,517 INFO L434 NwaCegarLoop]: 92 mSDtfsCounter, 0 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2024-09-20 12:06:32,517 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 936 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-20 12:06:32,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-09-20 12:06:32,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2024-09-20 12:06:32,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 256 states have (on average 1.0078125) internal successors, (258), 257 states have internal predecessors, (258), 44 states have call successors, (44), 44 states have call predecessors, (44), 43 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-20 12:06:32,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 345 transitions. [2024-09-20 12:06:32,565 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 345 transitions. Word has length 340 [2024-09-20 12:06:32,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:06:32,566 INFO L474 AbstractCegarLoop]: Abstraction has 344 states and 345 transitions. [2024-09-20 12:06:32,566 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 1.702290076335878) internal successors, (223), 131 states have internal predecessors, (223), 85 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2024-09-20 12:06:32,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:06:32,566 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 345 transitions. [2024-09-20 12:06:32,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2024-09-20 12:06:32,568 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:06:32,568 INFO L216 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:06:32,585 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2024-09-20 12:06:32,771 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,83 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:06:32,773 INFO L399 AbstractCegarLoop]: === Iteration 85 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:06:32,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:06:32,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1335265608, now seen corresponding path program 82 times [2024-09-20 12:06:32,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:06:32,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949074558] [2024-09-20 12:06:32,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:06:32,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:06:32,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:06:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 12:06:34,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 12:06:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 12:06:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 12:06:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-20 12:06:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 12:06:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-20 12:06:34,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 12:06:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 12:06:34,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 12:06:34,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-20 12:06:34,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-20 12:06:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-20 12:06:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-20 12:06:34,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-20 12:06:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-20 12:06:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-20 12:06:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-20 12:06:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-20 12:06:34,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-20 12:06:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-20 12:06:34,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-20 12:06:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-20 12:06:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-20 12:06:34,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-20 12:06:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-20 12:06:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-20 12:06:34,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-20 12:06:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-20 12:06:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-20 12:06:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-20 12:06:34,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-20 12:06:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-20 12:06:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-20 12:06:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2024-09-20 12:06:34,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-20 12:06:34,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-09-20 12:06:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-20 12:06:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2024-09-20 12:06:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-20 12:06:34,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2024-09-20 12:06:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:34,805 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 943 proven. 2584 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-20 12:06:34,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:06:34,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949074558] [2024-09-20 12:06:34,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949074558] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:06:34,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623541514] [2024-09-20 12:06:34,806 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 12:06:34,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:06:34,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:06:34,812 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:06:34,814 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2024-09-20 12:06:34,955 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 12:06:34,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:06:34,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-09-20 12:06:34,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:06:35,178 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 985 proven. 2542 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-20 12:06:35,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:06:36,714 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 985 proven. 2542 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-20 12:06:36,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623541514] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:06:36,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:06:36,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 50 [2024-09-20 12:06:36,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060175553] [2024-09-20 12:06:36,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:06:36,716 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-09-20 12:06:36,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:06:36,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-09-20 12:06:36,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1003, Invalid=1447, Unknown=0, NotChecked=0, Total=2450 [2024-09-20 12:06:36,717 INFO L87 Difference]: Start difference. First operand 344 states and 345 transitions. Second operand has 50 states, 50 states have (on average 2.78) internal successors, (139), 48 states have internal predecessors, (139), 43 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-20 12:06:36,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:06:36,971 INFO L93 Difference]: Finished difference Result 357 states and 359 transitions. [2024-09-20 12:06:36,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-09-20 12:06:36,972 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.78) internal successors, (139), 48 states have internal predecessors, (139), 43 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 341 [2024-09-20 12:06:36,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:06:36,975 INFO L225 Difference]: With dead ends: 357 [2024-09-20 12:06:36,975 INFO L226 Difference]: Without dead ends: 355 [2024-09-20 12:06:36,975 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 721 SyntacticMatches, 84 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2262 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1009, Invalid=1541, Unknown=0, NotChecked=0, Total=2550 [2024-09-20 12:06:36,976 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 12:06:36,976 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 128 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 12:06:36,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-09-20 12:06:37,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 351. [2024-09-20 12:06:37,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 261 states have (on average 1.0076628352490422) internal successors, (263), 262 states have internal predecessors, (263), 45 states have call successors, (45), 45 states have call predecessors, (45), 44 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-20 12:06:37,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 352 transitions. [2024-09-20 12:06:37,011 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 352 transitions. Word has length 341 [2024-09-20 12:06:37,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:06:37,012 INFO L474 AbstractCegarLoop]: Abstraction has 351 states and 352 transitions. [2024-09-20 12:06:37,012 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.78) internal successors, (139), 48 states have internal predecessors, (139), 43 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-20 12:06:37,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:06:37,012 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 352 transitions. [2024-09-20 12:06:37,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2024-09-20 12:06:37,014 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:06:37,014 INFO L216 NwaCegarLoop]: trace histogram [43, 43, 43, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:06:37,033 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2024-09-20 12:06:37,218 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,84 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:06:37,219 INFO L399 AbstractCegarLoop]: === Iteration 86 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:06:37,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:06:37,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1597933717, now seen corresponding path program 83 times [2024-09-20 12:06:37,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:06:37,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113166222] [2024-09-20 12:06:37,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:06:37,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:06:37,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:06:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-09-20 12:06:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 12:06:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-20 12:06:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 12:06:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-09-20 12:06:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 12:06:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-20 12:06:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 12:06:40,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-09-20 12:06:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 12:06:40,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-09-20 12:06:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-20 12:06:40,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-09-20 12:06:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-20 12:06:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-09-20 12:06:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-20 12:06:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-09-20 12:06:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-20 12:06:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-09-20 12:06:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-20 12:06:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-09-20 12:06:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-20 12:06:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-09-20 12:06:40,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-20 12:06:40,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-09-20 12:06:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-20 12:06:40,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-09-20 12:06:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-20 12:06:40,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-09-20 12:06:40,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-20 12:06:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-09-20 12:06:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-20 12:06:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-09-20 12:06:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-20 12:06:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2024-09-20 12:06:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-20 12:06:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-09-20 12:06:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-20 12:06:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2024-09-20 12:06:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-20 12:06:40,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,425 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2024-09-20 12:06:40,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,426 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-20 12:06:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:40,428 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2627 proven. 1027 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-20 12:06:40,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:06:40,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113166222] [2024-09-20 12:06:40,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113166222] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:06:40,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771726440] [2024-09-20 12:06:40,429 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 12:06:40,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:06:40,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:06:40,431 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:06:40,432 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2024-09-20 12:06:40,648 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2024-09-20 12:06:40,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:06:40,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-09-20 12:06:40,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:06:43,218 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2751 proven. 903 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-20 12:06:43,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:06:45,298 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2751 proven. 903 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-20 12:06:45,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771726440] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:06:45,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:06:45,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89, 89] total 134 [2024-09-20 12:06:45,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483057074] [2024-09-20 12:06:45,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:06:45,300 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2024-09-20 12:06:45,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:06:45,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2024-09-20 12:06:45,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4009, Invalid=13813, Unknown=0, NotChecked=0, Total=17822 [2024-09-20 12:06:45,304 INFO L87 Difference]: Start difference. First operand 351 states and 352 transitions. Second operand has 134 states, 134 states have (on average 1.7014925373134329) internal successors, (228), 134 states have internal predecessors, (228), 87 states have call successors, (88), 2 states have call predecessors, (88), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2024-09-20 12:06:46,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:06:46,389 INFO L93 Difference]: Finished difference Result 489 states and 533 transitions. [2024-09-20 12:06:46,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2024-09-20 12:06:46,390 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 134 states have (on average 1.7014925373134329) internal successors, (228), 134 states have internal predecessors, (228), 87 states have call successors, (88), 2 states have call predecessors, (88), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) Word has length 348 [2024-09-20 12:06:46,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:06:46,393 INFO L225 Difference]: With dead ends: 489 [2024-09-20 12:06:46,393 INFO L226 Difference]: Without dead ends: 352 [2024-09-20 12:06:46,395 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 870 GetRequests, 653 SyntacticMatches, 85 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11634 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=4009, Invalid=13813, Unknown=0, NotChecked=0, Total=17822 [2024-09-20 12:06:46,397 INFO L434 NwaCegarLoop]: 94 mSDtfsCounter, 0 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 1576 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2024-09-20 12:06:46,398 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1243 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1576 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-20 12:06:46,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2024-09-20 12:06:46,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2024-09-20 12:06:46,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 262 states have (on average 1.0076335877862594) internal successors, (264), 263 states have internal predecessors, (264), 45 states have call successors, (45), 45 states have call predecessors, (45), 44 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2024-09-20 12:06:46,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 353 transitions. [2024-09-20 12:06:46,435 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 353 transitions. Word has length 348 [2024-09-20 12:06:46,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:06:46,436 INFO L474 AbstractCegarLoop]: Abstraction has 352 states and 353 transitions. [2024-09-20 12:06:46,436 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 1.7014925373134329) internal successors, (228), 134 states have internal predecessors, (228), 87 states have call successors, (88), 2 states have call predecessors, (88), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2024-09-20 12:06:46,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:06:46,437 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 353 transitions. [2024-09-20 12:06:46,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2024-09-20 12:06:46,438 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:06:46,438 INFO L216 NwaCegarLoop]: trace histogram [43, 43, 43, 43, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:06:46,458 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2024-09-20 12:06:46,639 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,85 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:06:46,639 INFO L399 AbstractCegarLoop]: === Iteration 87 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:06:46,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:06:46,639 INFO L85 PathProgramCache]: Analyzing trace with hash -139650953, now seen corresponding path program 84 times [2024-09-20 12:06:46,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:06:46,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98817626] [2024-09-20 12:06:46,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:06:46,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:06:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:06:48,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 12:06:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-20 12:06:48,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 12:06:48,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-20 12:06:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 12:06:48,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-20 12:06:48,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 12:06:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-20 12:06:48,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 12:06:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-20 12:06:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 12:06:48,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-20 12:06:48,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-20 12:06:48,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-20 12:06:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-20 12:06:48,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-20 12:06:48,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-20 12:06:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-20 12:06:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-20 12:06:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-20 12:06:48,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-20 12:06:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-20 12:06:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-20 12:06:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-20 12:06:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-20 12:06:48,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-20 12:06:48,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-20 12:06:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-20 12:06:48,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-20 12:06:48,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-20 12:06:48,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-20 12:06:48,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-20 12:06:48,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-20 12:06:48,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-20 12:06:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-20 12:06:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2024-09-20 12:06:48,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-20 12:06:48,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2024-09-20 12:06:48,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-20 12:06:48,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2024-09-20 12:06:48,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-20 12:06:48,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2024-09-20 12:06:48,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:48,592 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 987 proven. 2710 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-20 12:06:48,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:06:48,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98817626] [2024-09-20 12:06:48,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98817626] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:06:48,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465376348] [2024-09-20 12:06:48,593 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 12:06:48,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:06:48,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:06:48,595 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:06:48,597 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2024-09-20 12:06:48,811 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2024-09-20 12:06:48,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 12:06:48,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-09-20 12:06:48,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:06:49,028 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 1030 proven. 2667 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-20 12:06:49,028 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:06:50,636 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 1030 proven. 2667 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-09-20 12:06:50,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465376348] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:06:50,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:06:50,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 51 [2024-09-20 12:06:50,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581756511] [2024-09-20 12:06:50,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:06:50,638 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-09-20 12:06:50,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:06:50,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-09-20 12:06:50,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1048, Invalid=1502, Unknown=0, NotChecked=0, Total=2550 [2024-09-20 12:06:50,640 INFO L87 Difference]: Start difference. First operand 352 states and 353 transitions. Second operand has 51 states, 51 states have (on average 2.784313725490196) internal successors, (142), 49 states have internal predecessors, (142), 44 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-20 12:06:50,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:06:50,928 INFO L93 Difference]: Finished difference Result 365 states and 367 transitions. [2024-09-20 12:06:50,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-09-20 12:06:50,929 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.784313725490196) internal successors, (142), 49 states have internal predecessors, (142), 44 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Word has length 349 [2024-09-20 12:06:50,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:06:50,931 INFO L225 Difference]: With dead ends: 365 [2024-09-20 12:06:50,932 INFO L226 Difference]: Without dead ends: 363 [2024-09-20 12:06:50,932 INFO L433 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 [2024-09-20 12:06:50,932 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 12:06:50,932 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 132 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 12:06:50,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-09-20 12:06:50,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 359. [2024-09-20 12:06:50,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 267 states have (on average 1.0074906367041199) internal successors, (269), 268 states have internal predecessors, (269), 46 states have call successors, (46), 46 states have call predecessors, (46), 45 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-20 12:06:50,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 360 transitions. [2024-09-20 12:06:50,969 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 360 transitions. Word has length 349 [2024-09-20 12:06:50,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:06:50,969 INFO L474 AbstractCegarLoop]: Abstraction has 359 states and 360 transitions. [2024-09-20 12:06:50,969 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.784313725490196) internal successors, (142), 49 states have internal predecessors, (142), 44 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-20 12:06:50,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:06:50,970 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 360 transitions. [2024-09-20 12:06:50,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2024-09-20 12:06:50,971 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:06:50,972 INFO L216 NwaCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:06:50,992 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2024-09-20 12:06:51,175 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,86 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:06:51,176 INFO L399 AbstractCegarLoop]: === Iteration 88 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:06:51,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:06:51,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1448554700, now seen corresponding path program 85 times [2024-09-20 12:06:51,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:06:51,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324482421] [2024-09-20 12:06:51,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:06:51,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:06:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 12:06:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 12:06:54,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-09-20 12:06:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 12:06:54,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-09-20 12:06:54,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 12:06:54,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-09-20 12:06:54,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 12:06:54,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-09-20 12:06:54,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 12:06:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-09-20 12:06:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 12:06:54,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-09-20 12:06:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-20 12:06:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-09-20 12:06:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-20 12:06:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-09-20 12:06:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-20 12:06:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-09-20 12:06:54,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-20 12:06:54,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-09-20 12:06:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-20 12:06:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-09-20 12:06:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-20 12:06:54,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-09-20 12:06:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-20 12:06:54,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-09-20 12:06:54,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-20 12:06:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-09-20 12:06:54,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-20 12:06:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-09-20 12:06:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-20 12:06:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-09-20 12:06:54,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-20 12:06:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-09-20 12:06:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-20 12:06:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2024-09-20 12:06:54,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-20 12:06:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2024-09-20 12:06:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-20 12:06:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2024-09-20 12:06:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-20 12:06:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2024-09-20 12:06:54,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-20 12:06:54,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:54,953 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2754 proven. 1073 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-20 12:06:54,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 12:06:54,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324482421] [2024-09-20 12:06:54,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324482421] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 12:06:54,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833380896] [2024-09-20 12:06:54,954 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 12:06:54,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 12:06:54,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 12:06:54,956 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 12:06:54,957 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2024-09-20 12:06:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 12:06:55,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-09-20 12:06:55,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 12:06:58,361 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2881 proven. 946 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-20 12:06:58,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 12:07:01,029 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2881 proven. 946 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-20 12:07:01,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833380896] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 12:07:01,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 12:07:01,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91, 91] total 137 [2024-09-20 12:07:01,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062211601] [2024-09-20 12:07:01,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 12:07:01,031 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2024-09-20 12:07:01,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 12:07:01,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2024-09-20 12:07:01,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4190, Invalid=14442, Unknown=0, NotChecked=0, Total=18632 [2024-09-20 12:07:01,036 INFO L87 Difference]: Start difference. First operand 359 states and 360 transitions. Second operand has 137 states, 137 states have (on average 1.7007299270072993) internal successors, (233), 137 states have internal predecessors, (233), 89 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2024-09-20 12:07:01,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 12:07:01,792 INFO L93 Difference]: Finished difference Result 500 states and 545 transitions. [2024-09-20 12:07:01,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2024-09-20 12:07:01,797 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 137 states have (on average 1.7007299270072993) internal successors, (233), 137 states have internal predecessors, (233), 89 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) Word has length 356 [2024-09-20 12:07:01,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 12:07:01,803 INFO L225 Difference]: With dead ends: 500 [2024-09-20 12:07:01,803 INFO L226 Difference]: Without dead ends: 360 [2024-09-20 12:07:01,805 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 890 GetRequests, 668 SyntacticMatches, 87 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12169 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=4190, Invalid=14442, Unknown=0, NotChecked=0, Total=18632 [2024-09-20 12:07:01,809 INFO L434 NwaCegarLoop]: 96 mSDtfsCounter, 0 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-20 12:07:01,809 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 501 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-20 12:07:01,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-09-20 12:07:01,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2024-09-20 12:07:01,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 268 states have (on average 1.007462686567164) internal successors, (270), 269 states have internal predecessors, (270), 46 states have call successors, (46), 46 states have call predecessors, (46), 45 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-20 12:07:01,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 361 transitions. [2024-09-20 12:07:01,849 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 361 transitions. Word has length 356 [2024-09-20 12:07:01,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 12:07:01,849 INFO L474 AbstractCegarLoop]: Abstraction has 360 states and 361 transitions. [2024-09-20 12:07:01,849 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 137 states have (on average 1.7007299270072993) internal successors, (233), 137 states have internal predecessors, (233), 89 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2024-09-20 12:07:01,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:07:01,850 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 361 transitions. [2024-09-20 12:07:01,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2024-09-20 12:07:01,851 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 12:07:01,851 INFO L216 NwaCegarLoop]: trace histogram [44, 44, 44, 44, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 12:07:01,871 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2024-09-20 12:07:02,055 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2024-09-20 12:07:02,056 INFO L399 AbstractCegarLoop]: === Iteration 89 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 12:07:02,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 12:07:02,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1891170856, now seen corresponding path program 86 times [2024-09-20 12:07:02,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 12:07:02,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124582220] [2024-09-20 12:07:02,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 12:07:02,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 12:07:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat