./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/fragtest_simple.i --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ca4ee3dd Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-invgen/fragtest_simple.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 be3b53cc5f9badbf5402cafcfa5766831674eb009261bc7c1bcbe9580aece38e --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-ca4ee3d-m [2024-09-20 18:45:41,194 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 18:45:41,250 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 18:45:41,255 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 18:45:41,256 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 18:45:41,277 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 18:45:41,278 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 18:45:41,278 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 18:45:41,279 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 18:45:41,280 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 18:45:41,280 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 18:45:41,280 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 18:45:41,281 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 18:45:41,281 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 18:45:41,281 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 18:45:41,281 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 18:45:41,282 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 18:45:41,282 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 18:45:41,282 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 18:45:41,282 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 18:45:41,282 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 18:45:41,283 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 18:45:41,283 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 18:45:41,283 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 18:45:41,284 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 18:45:41,284 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 18:45:41,284 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 18:45:41,284 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 18:45:41,284 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 18:45:41,285 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 18:45:41,285 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 18:45:41,285 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 18:45:41,285 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 18:45:41,286 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 18:45:41,286 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 18:45:41,286 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 18:45:41,286 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 18:45:41,286 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 18:45:41,286 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 18:45:41,286 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 18:45:41,287 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 18:45:41,287 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 18:45:41,288 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be3b53cc5f9badbf5402cafcfa5766831674eb009261bc7c1bcbe9580aece38e Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-20 18:45:41,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 18:45:41,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 18:45:41,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 18:45:41,489 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 18:45:41,489 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 18:45:41,490 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-invgen/fragtest_simple.i [2024-09-20 18:45:42,712 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 18:45:42,849 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 18:45:42,850 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/fragtest_simple.i [2024-09-20 18:45:42,855 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/64a479936/dd95ab6ec41c4079bfb25b8dfafa7a8f/FLAG134973cd9 [2024-09-20 18:45:42,865 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/64a479936/dd95ab6ec41c4079bfb25b8dfafa7a8f [2024-09-20 18:45:42,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 18:45:42,870 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-20 18:45:42,872 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 18:45:42,872 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 18:45:42,876 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 18:45:42,876 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 06:45:42" (1/1) ... [2024-09-20 18:45:42,878 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d8b250d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:45:42, skipping insertion in model container [2024-09-20 18:45:42,878 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 06:45:42" (1/1) ... [2024-09-20 18:45:42,893 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 18:45:42,995 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/fragtest_simple.i[893,906] [2024-09-20 18:45:43,006 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 18:45:43,014 INFO L200 MainTranslator]: Completed pre-run [2024-09-20 18:45:43,024 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/fragtest_simple.i[893,906] [2024-09-20 18:45:43,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 18:45:43,042 INFO L204 MainTranslator]: Completed translation [2024-09-20 18:45:43,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:45:43 WrapperNode [2024-09-20 18:45:43,042 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 18:45:43,043 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 18:45:43,043 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 18:45:43,043 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 18:45:43,049 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:45:43" (1/1) ... [2024-09-20 18:45:43,057 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:45:43" (1/1) ... [2024-09-20 18:45:43,062 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-20 18:45:43,062 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 18:45:43,062 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 18:45:43,063 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 18:45:43,063 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 18:45:43,072 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:45:43" (1/1) ... [2024-09-20 18:45:43,072 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:45:43" (1/1) ... [2024-09-20 18:45:43,073 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:45:43" (1/1) ... [2024-09-20 18:45:43,093 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-20 18:45:43,093 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:45:43" (1/1) ... [2024-09-20 18:45:43,093 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:45:43" (1/1) ... [2024-09-20 18:45:43,095 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:45:43" (1/1) ... [2024-09-20 18:45:43,101 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:45:43" (1/1) ... [2024-09-20 18:45:43,105 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:45:43" (1/1) ... [2024-09-20 18:45:43,106 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:45:43" (1/1) ... [2024-09-20 18:45:43,107 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 18:45:43,108 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 18:45:43,108 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 18:45:43,108 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 18:45:43,109 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:45:43" (1/1) ... [2024-09-20 18:45:43,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 18:45:43,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:43,138 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-20 18:45:43,141 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-20 18:45:43,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 18:45:43,177 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-20 18:45:43,177 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-20 18:45:43,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-20 18:45:43,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-20 18:45:43,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-20 18:45:43,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 18:45:43,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 18:45:43,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-20 18:45:43,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-20 18:45:43,226 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 18:45:43,228 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 18:45:43,343 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-09-20 18:45:43,343 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 18:45:43,360 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 18:45:43,360 INFO L318 CfgBuilder]: Removed 3 assume(true) statements. [2024-09-20 18:45:43,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 06:45:43 BoogieIcfgContainer [2024-09-20 18:45:43,361 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 18:45:43,362 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 18:45:43,363 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 18:45:43,365 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 18:45:43,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 06:45:42" (1/3) ... [2024-09-20 18:45:43,366 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71151807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 06:45:43, skipping insertion in model container [2024-09-20 18:45:43,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 06:45:43" (2/3) ... [2024-09-20 18:45:43,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71151807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 06:45:43, skipping insertion in model container [2024-09-20 18:45:43,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 06:45:43" (3/3) ... [2024-09-20 18:45:43,368 INFO L112 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i [2024-09-20 18:45:43,380 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 18:45:43,381 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-20 18:45:43,418 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 18:45:43,422 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;@5f8b6862, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 18:45:43,423 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-20 18:45:43,425 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-20 18:45:43,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-20 18:45:43,430 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:43,430 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:43,433 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:43,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:43,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1876965751, now seen corresponding path program 1 times [2024-09-20 18:45:43,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:43,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569181651] [2024-09-20 18:45:43,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:43,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:43,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:43,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:43,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 18:45:43,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:43,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569181651] [2024-09-20 18:45:43,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569181651] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 18:45:43,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 18:45:43,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-20 18:45:43,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585440169] [2024-09-20 18:45:43,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 18:45:43,571 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-20 18:45:43,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:43,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-20 18:45:43,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 18:45:43,591 INFO L87 Difference]: Start difference. First operand has 26 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-20 18:45:43,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:43,617 INFO L93 Difference]: Finished difference Result 45 states and 60 transitions. [2024-09-20 18:45:43,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-20 18:45:43,620 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 15 [2024-09-20 18:45:43,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:43,624 INFO L225 Difference]: With dead ends: 45 [2024-09-20 18:45:43,625 INFO L226 Difference]: Without dead ends: 22 [2024-09-20 18:45:43,627 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 18:45:43,631 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:43,632 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 18:45:43,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-09-20 18:45:43,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-09-20 18:45:43,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 18:45:43,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-09-20 18:45:43,660 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 15 [2024-09-20 18:45:43,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:43,660 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-09-20 18:45:43,661 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-20 18:45:43,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:43,661 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-09-20 18:45:43,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-20 18:45:43,662 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:43,662 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:43,662 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-20 18:45:43,662 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:43,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:43,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1705971875, now seen corresponding path program 1 times [2024-09-20 18:45:43,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:43,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330755853] [2024-09-20 18:45:43,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:43,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:43,855 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:43,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:43,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 18:45:43,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:43,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330755853] [2024-09-20 18:45:43,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330755853] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 18:45:43,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 18:45:43,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 18:45:43,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609521807] [2024-09-20 18:45:43,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 18:45:43,863 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 18:45:43,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:43,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 18:45:43,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 18:45:43,864 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-20 18:45:43,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:43,904 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2024-09-20 18:45:43,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 18:45:43,904 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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 17 [2024-09-20 18:45:43,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:43,905 INFO L225 Difference]: With dead ends: 31 [2024-09-20 18:45:43,905 INFO L226 Difference]: Without dead ends: 29 [2024-09-20 18:45:43,906 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-20 18:45:43,906 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 5 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:43,907 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 66 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 18:45:43,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-20 18:45:43,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-09-20 18:45:43,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-20 18:45:43,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2024-09-20 18:45:43,917 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 17 [2024-09-20 18:45:43,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:43,917 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2024-09-20 18:45:43,917 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-20 18:45:43,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:43,919 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2024-09-20 18:45:43,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-20 18:45:43,919 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:43,920 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:43,920 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-20 18:45:43,920 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:43,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:43,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1806984300, now seen corresponding path program 1 times [2024-09-20 18:45:43,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:43,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838206005] [2024-09-20 18:45:43,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:43,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:44,028 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:44,034 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-20 18:45:44,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:44,044 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 18:45:44,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:44,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838206005] [2024-09-20 18:45:44,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838206005] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 18:45:44,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 18:45:44,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 18:45:44,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157683880] [2024-09-20 18:45:44,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 18:45:44,045 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 18:45:44,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:44,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 18:45:44,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 18:45:44,046 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 18:45:44,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:44,102 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2024-09-20 18:45:44,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 18:45:44,103 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2024-09-20 18:45:44,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:44,107 INFO L225 Difference]: With dead ends: 48 [2024-09-20 18:45:44,107 INFO L226 Difference]: Without dead ends: 33 [2024-09-20 18:45:44,108 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-20 18:45:44,109 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 4 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:44,111 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 57 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 18:45:44,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-20 18:45:44,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2024-09-20 18:45:44,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-20 18:45:44,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-09-20 18:45:44,125 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2024-09-20 18:45:44,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:44,126 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-09-20 18:45:44,126 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 18:45:44,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:44,127 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-09-20 18:45:44,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-20 18:45:44,128 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:44,128 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:44,129 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-20 18:45:44,129 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:44,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:44,129 INFO L85 PathProgramCache]: Analyzing trace with hash 2085758041, now seen corresponding path program 1 times [2024-09-20 18:45:44,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:44,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109678574] [2024-09-20 18:45:44,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:44,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:44,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:44,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:44,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-20 18:45:44,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:44,255 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 18:45:44,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:44,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109678574] [2024-09-20 18:45:44,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109678574] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:44,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443763041] [2024-09-20 18:45:44,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:44,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:44,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:44,267 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:44,268 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-20 18:45:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:44,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-20 18:45:44,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:45:44,402 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 18:45:44,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:45:44,474 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 18:45:44,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443763041] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:45:44,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:45:44,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2024-09-20 18:45:44,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617405744] [2024-09-20 18:45:44,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:45:44,477 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-20 18:45:44,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:44,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-20 18:45:44,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-09-20 18:45:44,481 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-20 18:45:44,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:44,625 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2024-09-20 18:45:44,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-20 18:45:44,626 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 6 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 27 [2024-09-20 18:45:44,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:44,627 INFO L225 Difference]: With dead ends: 62 [2024-09-20 18:45:44,627 INFO L226 Difference]: Without dead ends: 47 [2024-09-20 18:45:44,628 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2024-09-20 18:45:44,631 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:44,631 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 101 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:45:44,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-20 18:45:44,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2024-09-20 18:45:44,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 31 states have internal predecessors, (34), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-20 18:45:44,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2024-09-20 18:45:44,640 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 27 [2024-09-20 18:45:44,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:44,640 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2024-09-20 18:45:44,641 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 6 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-20 18:45:44,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:44,641 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2024-09-20 18:45:44,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-20 18:45:44,643 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:44,643 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:44,655 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-20 18:45:44,843 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:44,845 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:44,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:44,845 INFO L85 PathProgramCache]: Analyzing trace with hash 5025743, now seen corresponding path program 2 times [2024-09-20 18:45:44,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:44,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790925466] [2024-09-20 18:45:44,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:44,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:44,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:44,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:44,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-20 18:45:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:44,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-20 18:45:44,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:44,957 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 18:45:44,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:44,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790925466] [2024-09-20 18:45:44,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790925466] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:44,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884500317] [2024-09-20 18:45:44,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:45:44,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:44,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:44,962 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:44,963 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-20 18:45:45,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:45:45,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:45:45,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-20 18:45:45,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:45:45,069 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 18:45:45,070 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:45:45,147 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 18:45:45,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884500317] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:45:45,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:45:45,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-09-20 18:45:45,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622368182] [2024-09-20 18:45:45,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:45:45,151 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-20 18:45:45,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:45,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-20 18:45:45,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-09-20 18:45:45,152 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 18:45:45,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:45,303 INFO L93 Difference]: Finished difference Result 79 states and 92 transitions. [2024-09-20 18:45:45,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-20 18:45:45,303 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 7 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 37 [2024-09-20 18:45:45,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:45,304 INFO L225 Difference]: With dead ends: 79 [2024-09-20 18:45:45,304 INFO L226 Difference]: Without dead ends: 60 [2024-09-20 18:45:45,305 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 72 SyntacticMatches, 7 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2024-09-20 18:45:45,305 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 23 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:45,306 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 124 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:45:45,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-09-20 18:45:45,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 50. [2024-09-20 18:45:45,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 38 states have (on average 1.105263157894737) internal successors, (42), 39 states have internal predecessors, (42), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 18:45:45,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2024-09-20 18:45:45,319 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 37 [2024-09-20 18:45:45,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:45,319 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2024-09-20 18:45:45,319 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 7 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 18:45:45,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:45,320 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2024-09-20 18:45:45,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-20 18:45:45,320 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:45,320 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:45,334 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 18:45:45,525 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:45,526 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:45,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:45,526 INFO L85 PathProgramCache]: Analyzing trace with hash -607862011, now seen corresponding path program 3 times [2024-09-20 18:45:45,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:45,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964580334] [2024-09-20 18:45:45,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:45,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:45,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:45,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-20 18:45:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:45,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 18:45:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:45,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-20 18:45:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:45,650 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 18:45:45,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:45,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964580334] [2024-09-20 18:45:45,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964580334] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:45,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020651175] [2024-09-20 18:45:45,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:45:45,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:45,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:45,653 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:45,654 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-20 18:45:45,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-20 18:45:45,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:45:45,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-20 18:45:45,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:45:45,772 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 18:45:45,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:45:45,887 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 18:45:45,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020651175] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:45:45,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:45:45,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 16 [2024-09-20 18:45:45,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764110928] [2024-09-20 18:45:45,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:45:45,890 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-20 18:45:45,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:45,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-20 18:45:45,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-09-20 18:45:45,891 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 16 states, 16 states have (on average 3.5625) internal successors, (57), 15 states have internal predecessors, (57), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-20 18:45:46,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:46,099 INFO L93 Difference]: Finished difference Result 96 states and 112 transitions. [2024-09-20 18:45:46,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-20 18:45:46,100 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 15 states have internal predecessors, (57), 9 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 47 [2024-09-20 18:45:46,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:46,101 INFO L225 Difference]: With dead ends: 96 [2024-09-20 18:45:46,102 INFO L226 Difference]: Without dead ends: 73 [2024-09-20 18:45:46,103 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 92 SyntacticMatches, 9 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2024-09-20 18:45:46,104 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 39 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:46,105 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 143 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:45:46,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-09-20 18:45:46,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 60. [2024-09-20 18:45:46,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 46 states have (on average 1.0869565217391304) internal successors, (50), 47 states have internal predecessors, (50), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 18:45:46,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2024-09-20 18:45:46,116 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 47 [2024-09-20 18:45:46,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:46,116 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2024-09-20 18:45:46,116 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 15 states have internal predecessors, (57), 9 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-20 18:45:46,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:46,116 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2024-09-20 18:45:46,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-09-20 18:45:46,119 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:46,119 INFO L216 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:46,131 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 18:45:46,322 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-20 18:45:46,323 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:46,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:46,323 INFO L85 PathProgramCache]: Analyzing trace with hash -674468357, now seen corresponding path program 4 times [2024-09-20 18:45:46,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:46,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625848806] [2024-09-20 18:45:46,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:46,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:46,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:46,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-20 18:45:46,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:46,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 18:45:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:46,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 18:45:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:46,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 18:45:46,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:46,499 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 31 proven. 29 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 18:45:46,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:46,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625848806] [2024-09-20 18:45:46,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625848806] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:46,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175911956] [2024-09-20 18:45:46,502 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:45:46,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:46,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:46,505 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:46,506 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-20 18:45:46,547 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:45:46,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:45:46,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-20 18:45:46,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:45:46,671 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 40 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 18:45:46,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:45:46,771 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 40 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 18:45:46,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175911956] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:45:46,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:45:46,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 19 [2024-09-20 18:45:46,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377427944] [2024-09-20 18:45:46,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:45:46,773 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-20 18:45:46,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:46,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-20 18:45:46,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2024-09-20 18:45:46,774 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-20 18:45:46,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:46,907 INFO L93 Difference]: Finished difference Result 104 states and 122 transitions. [2024-09-20 18:45:46,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-20 18:45:46,908 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 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 57 [2024-09-20 18:45:46,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:46,909 INFO L225 Difference]: With dead ends: 104 [2024-09-20 18:45:46,909 INFO L226 Difference]: Without dead ends: 77 [2024-09-20 18:45:46,909 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 110 SyntacticMatches, 8 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2024-09-20 18:45:46,910 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 32 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:46,911 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 139 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:45:46,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-09-20 18:45:46,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 62. [2024-09-20 18:45:46,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 49 states have internal predecessors, (52), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 18:45:46,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2024-09-20 18:45:46,923 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 57 [2024-09-20 18:45:46,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:46,923 INFO L474 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2024-09-20 18:45:46,923 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-20 18:45:46,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:46,925 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2024-09-20 18:45:46,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-20 18:45:46,926 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:46,926 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:46,938 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 18:45:47,126 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:47,127 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:47,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:47,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1699306816, now seen corresponding path program 5 times [2024-09-20 18:45:47,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:47,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548330551] [2024-09-20 18:45:47,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:47,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:47,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:47,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:47,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:47,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 18:45:47,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:47,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-20 18:45:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:47,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-20 18:45:47,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:47,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-20 18:45:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:47,249 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 28 proven. 42 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 18:45:47,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:47,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548330551] [2024-09-20 18:45:47,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548330551] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:47,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696297545] [2024-09-20 18:45:47,250 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:45:47,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:47,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:47,251 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:47,253 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-20 18:45:47,305 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-09-20 18:45:47,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:45:47,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-20 18:45:47,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:45:47,391 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 38 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 18:45:47,391 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:45:47,487 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 38 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 18:45:47,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696297545] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:45:47,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:45:47,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 14 [2024-09-20 18:45:47,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832891150] [2024-09-20 18:45:47,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:45:47,489 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-20 18:45:47,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:47,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-20 18:45:47,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-09-20 18:45:47,490 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 12 states have internal predecessors, (59), 7 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 18:45:47,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:47,538 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2024-09-20 18:45:47,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-20 18:45:47,538 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 12 states have internal predecessors, (59), 7 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 59 [2024-09-20 18:45:47,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:47,539 INFO L225 Difference]: With dead ends: 81 [2024-09-20 18:45:47,539 INFO L226 Difference]: Without dead ends: 79 [2024-09-20 18:45:47,540 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 118 SyntacticMatches, 11 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2024-09-20 18:45:47,540 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 12 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:47,540 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 129 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 18:45:47,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-09-20 18:45:47,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 74. [2024-09-20 18:45:47,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 57 states have (on average 1.0701754385964912) internal successors, (61), 58 states have internal predecessors, (61), 9 states have call successors, (9), 8 states have call predecessors, (9), 7 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 18:45:47,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2024-09-20 18:45:47,547 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 59 [2024-09-20 18:45:47,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:47,548 INFO L474 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2024-09-20 18:45:47,548 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 12 states have internal predecessors, (59), 7 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 18:45:47,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:47,548 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2024-09-20 18:45:47,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-09-20 18:45:47,549 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:47,550 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:47,561 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-20 18:45:47,753 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-09-20 18:45:47,754 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:47,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:47,754 INFO L85 PathProgramCache]: Analyzing trace with hash 705453474, now seen corresponding path program 6 times [2024-09-20 18:45:47,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:47,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243838448] [2024-09-20 18:45:47,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:47,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:47,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:47,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 18:45:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:47,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-20 18:45:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:47,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-20 18:45:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:47,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-20 18:45:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:47,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 18:45:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:47,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 18:45:47,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:47,916 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 69 proven. 45 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-20 18:45:47,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:47,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243838448] [2024-09-20 18:45:47,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243838448] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:47,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941756792] [2024-09-20 18:45:47,917 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:45:47,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:47,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:47,918 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:47,920 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-20 18:45:47,963 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-20 18:45:47,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:45:47,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-20 18:45:47,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:45:48,131 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 84 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-20 18:45:48,131 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:45:48,252 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 84 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-20 18:45:48,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941756792] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:45:48,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:45:48,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 26 [2024-09-20 18:45:48,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558547611] [2024-09-20 18:45:48,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:45:48,254 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-20 18:45:48,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:48,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-20 18:45:48,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2024-09-20 18:45:48,255 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 26 states have internal predecessors, (77), 16 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-20 18:45:48,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:48,493 INFO L93 Difference]: Finished difference Result 161 states and 192 transitions. [2024-09-20 18:45:48,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-20 18:45:48,495 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 26 states have internal predecessors, (77), 16 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 75 [2024-09-20 18:45:48,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:48,496 INFO L225 Difference]: With dead ends: 161 [2024-09-20 18:45:48,496 INFO L226 Difference]: Without dead ends: 99 [2024-09-20 18:45:48,497 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 145 SyntacticMatches, 9 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=380, Invalid=1102, Unknown=0, NotChecked=0, Total=1482 [2024-09-20 18:45:48,497 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 50 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:48,498 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 219 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:45:48,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-09-20 18:45:48,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 78. [2024-09-20 18:45:48,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 61 states have (on average 1.0655737704918034) internal successors, (65), 62 states have internal predecessors, (65), 9 states have call successors, (9), 8 states have call predecessors, (9), 7 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 18:45:48,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2024-09-20 18:45:48,507 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 75 [2024-09-20 18:45:48,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:48,507 INFO L474 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2024-09-20 18:45:48,507 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 26 states have internal predecessors, (77), 16 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-20 18:45:48,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:48,507 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2024-09-20 18:45:48,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-20 18:45:48,508 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:48,508 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:48,521 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-20 18:45:48,712 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:48,713 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:48,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:48,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1813255316, now seen corresponding path program 7 times [2024-09-20 18:45:48,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:48,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553424446] [2024-09-20 18:45:48,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:48,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:48,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:48,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 18:45:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:48,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-20 18:45:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:48,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 18:45:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:48,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 18:45:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:48,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 18:45:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:48,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 18:45:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:48,910 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 54 proven. 86 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-20 18:45:48,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:48,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553424446] [2024-09-20 18:45:48,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553424446] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:48,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881481424] [2024-09-20 18:45:48,911 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:45:48,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:48,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:48,913 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:48,914 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-20 18:45:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:48,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-20 18:45:48,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:45:49,036 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 68 proven. 72 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-20 18:45:49,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:45:49,174 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 68 proven. 72 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-20 18:45:49,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881481424] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:45:49,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:45:49,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 16 [2024-09-20 18:45:49,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262021723] [2024-09-20 18:45:49,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:45:49,175 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-20 18:45:49,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:49,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-20 18:45:49,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2024-09-20 18:45:49,175 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand has 16 states, 16 states have (on average 4.3125) internal successors, (69), 14 states have internal predecessors, (69), 9 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 18:45:49,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:49,244 INFO L93 Difference]: Finished difference Result 97 states and 103 transitions. [2024-09-20 18:45:49,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-20 18:45:49,245 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 14 states have internal predecessors, (69), 9 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 79 [2024-09-20 18:45:49,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:49,246 INFO L225 Difference]: With dead ends: 97 [2024-09-20 18:45:49,246 INFO L226 Difference]: Without dead ends: 95 [2024-09-20 18:45:49,246 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 160 SyntacticMatches, 15 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-09-20 18:45:49,246 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:49,246 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 194 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:45:49,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-09-20 18:45:49,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 90. [2024-09-20 18:45:49,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 70 states have (on average 1.0571428571428572) internal successors, (74), 71 states have internal predecessors, (74), 11 states have call successors, (11), 9 states have call predecessors, (11), 8 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-20 18:45:49,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 95 transitions. [2024-09-20 18:45:49,254 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 95 transitions. Word has length 79 [2024-09-20 18:45:49,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:49,254 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 95 transitions. [2024-09-20 18:45:49,255 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 14 states have internal predecessors, (69), 9 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-20 18:45:49,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:49,255 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 95 transitions. [2024-09-20 18:45:49,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-09-20 18:45:49,256 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:49,256 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:49,268 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-09-20 18:45:49,460 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:49,461 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:49,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:49,461 INFO L85 PathProgramCache]: Analyzing trace with hash 299028046, now seen corresponding path program 8 times [2024-09-20 18:45:49,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:49,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810643390] [2024-09-20 18:45:49,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:49,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:49,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:49,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:49,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-20 18:45:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:49,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-20 18:45:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:49,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 18:45:49,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:49,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 18:45:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:49,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 18:45:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:49,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 18:45:49,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:49,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 18:45:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:49,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:45:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:49,732 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 123 proven. 77 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-20 18:45:49,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:49,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810643390] [2024-09-20 18:45:49,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810643390] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:49,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326829846] [2024-09-20 18:45:49,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:45:49,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:49,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:49,734 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:49,736 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-20 18:45:49,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:45:49,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:45:49,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-20 18:45:49,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:45:49,994 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 168 proven. 56 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-09-20 18:45:49,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:45:50,144 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 142 proven. 56 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-09-20 18:45:50,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326829846] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:45:50,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:45:50,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 29 [2024-09-20 18:45:50,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899233308] [2024-09-20 18:45:50,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:45:50,145 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-20 18:45:50,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:50,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-20 18:45:50,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=619, Unknown=0, NotChecked=0, Total=812 [2024-09-20 18:45:50,146 INFO L87 Difference]: Start difference. First operand 90 states and 95 transitions. Second operand has 29 states, 29 states have (on average 3.0) internal successors, (87), 29 states have internal predecessors, (87), 18 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19) [2024-09-20 18:45:50,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:50,326 INFO L93 Difference]: Finished difference Result 161 states and 190 transitions. [2024-09-20 18:45:50,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-20 18:45:50,327 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.0) internal successors, (87), 29 states have internal predecessors, (87), 18 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19) Word has length 95 [2024-09-20 18:45:50,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:50,328 INFO L225 Difference]: With dead ends: 161 [2024-09-20 18:45:50,328 INFO L226 Difference]: Without dead ends: 116 [2024-09-20 18:45:50,329 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 185 SyntacticMatches, 14 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=339, Invalid=993, Unknown=0, NotChecked=0, Total=1332 [2024-09-20 18:45:50,329 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 38 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:50,329 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 210 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:45:50,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-09-20 18:45:50,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 92. [2024-09-20 18:45:50,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 72 states have (on average 1.0555555555555556) internal successors, (76), 73 states have internal predecessors, (76), 11 states have call successors, (11), 9 states have call predecessors, (11), 8 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-20 18:45:50,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 97 transitions. [2024-09-20 18:45:50,336 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 97 transitions. Word has length 95 [2024-09-20 18:45:50,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:50,336 INFO L474 AbstractCegarLoop]: Abstraction has 92 states and 97 transitions. [2024-09-20 18:45:50,337 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.0) internal successors, (87), 29 states have internal predecessors, (87), 18 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19) [2024-09-20 18:45:50,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:50,337 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 97 transitions. [2024-09-20 18:45:50,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-09-20 18:45:50,338 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:50,338 INFO L216 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:50,350 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-20 18:45:50,541 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:50,542 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:50,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:50,542 INFO L85 PathProgramCache]: Analyzing trace with hash 892618579, now seen corresponding path program 9 times [2024-09-20 18:45:50,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:50,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637093183] [2024-09-20 18:45:50,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:50,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:50,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:50,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:50,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:50,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-20 18:45:50,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:50,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 18:45:50,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:50,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 18:45:50,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:50,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 18:45:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:50,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 18:45:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:50,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 18:45:50,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:50,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 18:45:50,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:50,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 18:45:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:50,781 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 123 proven. 93 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-20 18:45:50,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:50,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637093183] [2024-09-20 18:45:50,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637093183] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:50,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044684198] [2024-09-20 18:45:50,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:45:50,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:50,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:50,783 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:50,784 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-20 18:45:50,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-09-20 18:45:50,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:45:50,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-20 18:45:50,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:45:51,022 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 88 proven. 128 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-20 18:45:51,022 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:45:51,291 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 88 proven. 128 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-20 18:45:51,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044684198] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:45:51,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:45:51,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13, 13] total 31 [2024-09-20 18:45:51,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757687436] [2024-09-20 18:45:51,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:45:51,292 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-20 18:45:51,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:51,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-20 18:45:51,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=771, Unknown=0, NotChecked=0, Total=930 [2024-09-20 18:45:51,293 INFO L87 Difference]: Start difference. First operand 92 states and 97 transitions. Second operand has 31 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 30 states have internal predecessors, (107), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-20 18:45:51,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:51,693 INFO L93 Difference]: Finished difference Result 173 states and 206 transitions. [2024-09-20 18:45:51,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-20 18:45:51,696 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 30 states have internal predecessors, (107), 19 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 97 [2024-09-20 18:45:51,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:51,698 INFO L225 Difference]: With dead ends: 173 [2024-09-20 18:45:51,698 INFO L226 Difference]: Without dead ends: 130 [2024-09-20 18:45:51,702 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 192 SyntacticMatches, 19 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1247 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=599, Invalid=2707, Unknown=0, NotChecked=0, Total=3306 [2024-09-20 18:45:51,703 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 93 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:51,703 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 308 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:45:51,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-09-20 18:45:51,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 102. [2024-09-20 18:45:51,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 80 states have (on average 1.05) internal successors, (84), 81 states have internal predecessors, (84), 12 states have call successors, (12), 10 states have call predecessors, (12), 9 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-20 18:45:51,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 107 transitions. [2024-09-20 18:45:51,711 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 107 transitions. Word has length 97 [2024-09-20 18:45:51,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:51,711 INFO L474 AbstractCegarLoop]: Abstraction has 102 states and 107 transitions. [2024-09-20 18:45:51,711 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 30 states have internal predecessors, (107), 19 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-09-20 18:45:51,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:51,712 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 107 transitions. [2024-09-20 18:45:51,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-09-20 18:45:51,715 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:51,715 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:51,729 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-20 18:45:51,915 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-20 18:45:51,916 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:51,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:51,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1940072183, now seen corresponding path program 10 times [2024-09-20 18:45:51,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:51,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965143105] [2024-09-20 18:45:51,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:51,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:52,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:52,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-20 18:45:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:52,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-20 18:45:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:52,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-20 18:45:52,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:52,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 18:45:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:52,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 18:45:52,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:52,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 18:45:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:52,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 18:45:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:52,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 18:45:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:52,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 18:45:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:52,199 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 156 proven. 114 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-20 18:45:52,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:52,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965143105] [2024-09-20 18:45:52,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965143105] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:52,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954610373] [2024-09-20 18:45:52,200 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:45:52,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:52,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:52,202 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:52,203 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-20 18:45:52,257 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:45:52,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:45:52,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-20 18:45:52,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:45:52,467 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 108 proven. 162 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-20 18:45:52,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:45:52,759 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 108 proven. 162 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-20 18:45:52,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954610373] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:45:52,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:45:52,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 14, 14] total 34 [2024-09-20 18:45:52,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329073002] [2024-09-20 18:45:52,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:45:52,760 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-20 18:45:52,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:52,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-20 18:45:52,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=931, Unknown=0, NotChecked=0, Total=1122 [2024-09-20 18:45:52,762 INFO L87 Difference]: Start difference. First operand 102 states and 107 transitions. Second operand has 34 states, 34 states have (on average 3.4411764705882355) internal successors, (117), 33 states have internal predecessors, (117), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-20 18:45:53,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:53,216 INFO L93 Difference]: Finished difference Result 190 states and 226 transitions. [2024-09-20 18:45:53,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-20 18:45:53,217 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.4411764705882355) internal successors, (117), 33 states have internal predecessors, (117), 21 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 107 [2024-09-20 18:45:53,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:53,219 INFO L225 Difference]: With dead ends: 190 [2024-09-20 18:45:53,219 INFO L226 Difference]: Without dead ends: 143 [2024-09-20 18:45:53,220 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 212 SyntacticMatches, 21 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1561 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=725, Invalid=3307, Unknown=0, NotChecked=0, Total=4032 [2024-09-20 18:45:53,221 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 99 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:53,221 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 391 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:45:53,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-09-20 18:45:53,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 112. [2024-09-20 18:45:53,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 88 states have (on average 1.0454545454545454) internal successors, (92), 89 states have internal predecessors, (92), 13 states have call successors, (13), 11 states have call predecessors, (13), 10 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-20 18:45:53,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 117 transitions. [2024-09-20 18:45:53,238 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 117 transitions. Word has length 107 [2024-09-20 18:45:53,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:53,238 INFO L474 AbstractCegarLoop]: Abstraction has 112 states and 117 transitions. [2024-09-20 18:45:53,239 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.4411764705882355) internal successors, (117), 33 states have internal predecessors, (117), 21 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-09-20 18:45:53,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:53,240 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 117 transitions. [2024-09-20 18:45:53,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-09-20 18:45:53,243 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:53,243 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:53,255 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-20 18:45:53,443 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-09-20 18:45:53,444 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:53,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:53,444 INFO L85 PathProgramCache]: Analyzing trace with hash 2078106239, now seen corresponding path program 11 times [2024-09-20 18:45:53,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:53,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39444842] [2024-09-20 18:45:53,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:53,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:53,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:53,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-20 18:45:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:53,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 18:45:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:53,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 18:45:53,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:53,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 18:45:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:53,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 18:45:53,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:53,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 18:45:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:53,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 18:45:53,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:53,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 18:45:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:53,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 18:45:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:53,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 18:45:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:53,776 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 193 proven. 137 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-20 18:45:53,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:53,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39444842] [2024-09-20 18:45:53,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39444842] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:53,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491239184] [2024-09-20 18:45:53,776 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:45:53,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:53,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:53,779 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:53,780 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-20 18:45:53,850 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-09-20 18:45:53,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:45:53,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-20 18:45:53,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:45:54,153 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 220 proven. 110 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-20 18:45:54,154 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:45:54,401 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 220 proven. 110 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-20 18:45:54,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491239184] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:45:54,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:45:54,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 37 [2024-09-20 18:45:54,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172507272] [2024-09-20 18:45:54,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:45:54,402 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-20 18:45:54,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:54,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-20 18:45:54,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=1017, Unknown=0, NotChecked=0, Total=1332 [2024-09-20 18:45:54,403 INFO L87 Difference]: Start difference. First operand 112 states and 117 transitions. Second operand has 37 states, 37 states have (on average 2.7837837837837838) internal successors, (103), 37 states have internal predecessors, (103), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-20 18:45:54,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:54,672 INFO L93 Difference]: Finished difference Result 198 states and 236 transitions. [2024-09-20 18:45:54,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-20 18:45:54,672 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.7837837837837838) internal successors, (103), 37 states have internal predecessors, (103), 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 117 [2024-09-20 18:45:54,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:54,674 INFO L225 Difference]: With dead ends: 198 [2024-09-20 18:45:54,675 INFO L226 Difference]: Without dead ends: 147 [2024-09-20 18:45:54,675 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 224 SyntacticMatches, 20 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=581, Invalid=1675, Unknown=0, NotChecked=0, Total=2256 [2024-09-20 18:45:54,676 INFO L434 NwaCegarLoop]: 42 mSDtfsCounter, 76 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:54,676 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 281 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:45:54,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-09-20 18:45:54,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 114. [2024-09-20 18:45:54,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 90 states have (on average 1.0444444444444445) internal successors, (94), 91 states have internal predecessors, (94), 13 states have call successors, (13), 11 states have call predecessors, (13), 10 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-20 18:45:54,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 119 transitions. [2024-09-20 18:45:54,690 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 119 transitions. Word has length 117 [2024-09-20 18:45:54,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:54,691 INFO L474 AbstractCegarLoop]: Abstraction has 114 states and 119 transitions. [2024-09-20 18:45:54,693 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.7837837837837838) internal successors, (103), 37 states have internal predecessors, (103), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-20 18:45:54,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:54,694 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 119 transitions. [2024-09-20 18:45:54,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-09-20 18:45:54,695 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:54,695 INFO L216 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:54,708 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-09-20 18:45:54,895 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-09-20 18:45:54,896 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:54,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:54,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1424366020, now seen corresponding path program 12 times [2024-09-20 18:45:54,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:54,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177542064] [2024-09-20 18:45:54,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:54,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:55,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:55,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-20 18:45:55,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:55,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 18:45:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:55,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 18:45:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:55,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 18:45:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:55,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 18:45:55,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:55,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 18:45:55,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:55,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:45:55,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:55,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 18:45:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:55,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 18:45:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:55,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 18:45:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:55,129 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 130 proven. 222 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-20 18:45:55,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:55,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177542064] [2024-09-20 18:45:55,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177542064] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:55,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938715118] [2024-09-20 18:45:55,130 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:45:55,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:55,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:55,131 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:55,132 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-20 18:45:55,196 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-09-20 18:45:55,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:45:55,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-20 18:45:55,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:45:55,302 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 152 proven. 200 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-20 18:45:55,302 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:45:55,488 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 152 proven. 200 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-20 18:45:55,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938715118] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:45:55,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:45:55,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 20 [2024-09-20 18:45:55,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827235151] [2024-09-20 18:45:55,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:45:55,489 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-20 18:45:55,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:55,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-20 18:45:55,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2024-09-20 18:45:55,490 INFO L87 Difference]: Start difference. First operand 114 states and 119 transitions. Second operand has 20 states, 20 states have (on average 4.45) internal successors, (89), 18 states have internal predecessors, (89), 13 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-20 18:45:55,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:55,565 INFO L93 Difference]: Finished difference Result 133 states and 140 transitions. [2024-09-20 18:45:55,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-20 18:45:55,565 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.45) internal successors, (89), 18 states have internal predecessors, (89), 13 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 119 [2024-09-20 18:45:55,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:55,566 INFO L225 Difference]: With dead ends: 133 [2024-09-20 18:45:55,566 INFO L226 Difference]: Without dead ends: 131 [2024-09-20 18:45:55,567 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 244 SyntacticMatches, 23 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2024-09-20 18:45:55,567 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 10 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:55,567 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 188 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:45:55,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-09-20 18:45:55,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 126. [2024-09-20 18:45:55,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 99 states have (on average 1.0404040404040404) internal successors, (103), 100 states have internal predecessors, (103), 15 states have call successors, (15), 12 states have call predecessors, (15), 11 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-20 18:45:55,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 132 transitions. [2024-09-20 18:45:55,575 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 132 transitions. Word has length 119 [2024-09-20 18:45:55,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:55,575 INFO L474 AbstractCegarLoop]: Abstraction has 126 states and 132 transitions. [2024-09-20 18:45:55,575 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.45) internal successors, (89), 18 states have internal predecessors, (89), 13 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-20 18:45:55,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:55,575 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 132 transitions. [2024-09-20 18:45:55,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-09-20 18:45:55,576 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:55,576 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:55,590 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-20 18:45:55,776 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-20 18:45:55,777 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:55,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:55,777 INFO L85 PathProgramCache]: Analyzing trace with hash -552252250, now seen corresponding path program 13 times [2024-09-20 18:45:55,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:55,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578854131] [2024-09-20 18:45:55,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:55,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:56,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:56,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:56,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-20 18:45:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:56,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 18:45:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:56,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 18:45:56,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:56,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 18:45:56,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:56,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 18:45:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:56,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 18:45:56,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:56,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:45:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:56,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 18:45:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:56,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 18:45:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:56,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 18:45:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:56,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 18:45:56,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:56,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 18:45:56,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:56,117 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 279 proven. 165 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-20 18:45:56,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:56,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578854131] [2024-09-20 18:45:56,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578854131] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:56,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626396175] [2024-09-20 18:45:56,118 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:45:56,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:56,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:56,119 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:56,120 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-20 18:45:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:56,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-20 18:45:56,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:45:56,510 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 352 proven. 132 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2024-09-20 18:45:56,510 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:45:56,775 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 310 proven. 132 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2024-09-20 18:45:56,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626396175] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:45:56,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:45:56,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 41 [2024-09-20 18:45:56,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237964757] [2024-09-20 18:45:56,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:45:56,776 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-20 18:45:56,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:56,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-20 18:45:56,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=1259, Unknown=0, NotChecked=0, Total=1640 [2024-09-20 18:45:56,777 INFO L87 Difference]: Start difference. First operand 126 states and 132 transitions. Second operand has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 26 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 26 states have call predecessors, (27), 26 states have call successors, (27) [2024-09-20 18:45:57,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:57,065 INFO L93 Difference]: Finished difference Result 225 states and 267 transitions. [2024-09-20 18:45:57,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-20 18:45:57,066 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 26 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 26 states have call predecessors, (27), 26 states have call successors, (27) Word has length 135 [2024-09-20 18:45:57,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:57,067 INFO L225 Difference]: With dead ends: 225 [2024-09-20 18:45:57,067 INFO L226 Difference]: Without dead ends: 164 [2024-09-20 18:45:57,068 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 261 SyntacticMatches, 22 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=695, Invalid=2061, Unknown=0, NotChecked=0, Total=2756 [2024-09-20 18:45:57,068 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 70 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:57,068 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 375 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:45:57,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-09-20 18:45:57,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 128. [2024-09-20 18:45:57,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 101 states have (on average 1.0396039603960396) internal successors, (105), 102 states have internal predecessors, (105), 15 states have call successors, (15), 12 states have call predecessors, (15), 11 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-09-20 18:45:57,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 134 transitions. [2024-09-20 18:45:57,077 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 134 transitions. Word has length 135 [2024-09-20 18:45:57,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:57,077 INFO L474 AbstractCegarLoop]: Abstraction has 128 states and 134 transitions. [2024-09-20 18:45:57,077 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 26 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 26 states have call predecessors, (27), 26 states have call successors, (27) [2024-09-20 18:45:57,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:57,078 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 134 transitions. [2024-09-20 18:45:57,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-09-20 18:45:57,078 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:57,078 INFO L216 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:57,092 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-20 18:45:57,283 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-20 18:45:57,283 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:57,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:57,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1058366293, now seen corresponding path program 14 times [2024-09-20 18:45:57,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:57,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942968769] [2024-09-20 18:45:57,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:57,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:57,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:57,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-20 18:45:57,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:57,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-20 18:45:57,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:57,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 18:45:57,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:57,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 18:45:57,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:57,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 18:45:57,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:57,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 18:45:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:57,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 18:45:57,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:57,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 18:45:57,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:57,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 18:45:57,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:57,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 18:45:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:57,643 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 18:45:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:57,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 18:45:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:57,648 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 279 proven. 189 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-20 18:45:57,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:57,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942968769] [2024-09-20 18:45:57,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942968769] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:57,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655689557] [2024-09-20 18:45:57,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:45:57,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:57,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:57,650 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:57,652 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-20 18:45:57,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:45:57,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:45:57,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-20 18:45:57,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:45:58,023 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 180 proven. 288 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-20 18:45:58,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:45:58,428 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 180 proven. 288 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-20 18:45:58,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655689557] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:45:58,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:45:58,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 17, 17] total 43 [2024-09-20 18:45:58,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602428966] [2024-09-20 18:45:58,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:45:58,429 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-09-20 18:45:58,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:45:58,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-09-20 18:45:58,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=1501, Unknown=0, NotChecked=0, Total=1806 [2024-09-20 18:45:58,431 INFO L87 Difference]: Start difference. First operand 128 states and 134 transitions. Second operand has 43 states, 43 states have (on average 3.4186046511627906) internal successors, (147), 42 states have internal predecessors, (147), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-20 18:45:59,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:45:59,006 INFO L93 Difference]: Finished difference Result 237 states and 283 transitions. [2024-09-20 18:45:59,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-09-20 18:45:59,007 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.4186046511627906) internal successors, (147), 42 states have internal predecessors, (147), 27 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 137 [2024-09-20 18:45:59,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:45:59,008 INFO L225 Difference]: With dead ends: 237 [2024-09-20 18:45:59,008 INFO L226 Difference]: Without dead ends: 178 [2024-09-20 18:45:59,010 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 272 SyntacticMatches, 27 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2713 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1175, Invalid=5467, Unknown=0, NotChecked=0, Total=6642 [2024-09-20 18:45:59,010 INFO L434 NwaCegarLoop]: 46 mSDtfsCounter, 187 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:45:59,010 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 583 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:45:59,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-09-20 18:45:59,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 138. [2024-09-20 18:45:59,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 109 states have (on average 1.036697247706422) internal successors, (113), 110 states have internal predecessors, (113), 16 states have call successors, (16), 13 states have call predecessors, (16), 12 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-09-20 18:45:59,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 144 transitions. [2024-09-20 18:45:59,019 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 144 transitions. Word has length 137 [2024-09-20 18:45:59,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:45:59,019 INFO L474 AbstractCegarLoop]: Abstraction has 138 states and 144 transitions. [2024-09-20 18:45:59,020 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.4186046511627906) internal successors, (147), 42 states have internal predecessors, (147), 27 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-20 18:45:59,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:59,020 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 144 transitions. [2024-09-20 18:45:59,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-09-20 18:45:59,021 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:45:59,021 INFO L216 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:45:59,033 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-09-20 18:45:59,221 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-09-20 18:45:59,221 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:45:59,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:45:59,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1330081121, now seen corresponding path program 15 times [2024-09-20 18:45:59,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:45:59,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451811959] [2024-09-20 18:45:59,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:45:59,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:45:59,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:59,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:45:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:59,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-20 18:45:59,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:59,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-20 18:45:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:59,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 18:45:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:59,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 18:45:59,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:59,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 18:45:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:59,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 18:45:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:59,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 18:45:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:59,635 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 18:45:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:59,637 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 18:45:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:59,638 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 18:45:59,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:59,639 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 18:45:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:59,640 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-20 18:45:59,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:59,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-20 18:45:59,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:45:59,644 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 328 proven. 218 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-20 18:45:59,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:45:59,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451811959] [2024-09-20 18:45:59,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451811959] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:45:59,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901309673] [2024-09-20 18:45:59,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:45:59,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:45:59,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:45:59,647 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:45:59,648 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-20 18:45:59,726 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2024-09-20 18:45:59,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:45:59,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-20 18:45:59,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:00,014 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 208 proven. 338 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-20 18:46:00,014 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:00,453 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 208 proven. 338 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-20 18:46:00,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901309673] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:00,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:00,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 18, 18] total 46 [2024-09-20 18:46:00,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859921361] [2024-09-20 18:46:00,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:00,454 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-20 18:46:00,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:00,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-20 18:46:00,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=1721, Unknown=0, NotChecked=0, Total=2070 [2024-09-20 18:46:00,456 INFO L87 Difference]: Start difference. First operand 138 states and 144 transitions. Second operand has 46 states, 46 states have (on average 3.4130434782608696) internal successors, (157), 45 states have internal predecessors, (157), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-20 18:46:01,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:01,085 INFO L93 Difference]: Finished difference Result 254 states and 303 transitions. [2024-09-20 18:46:01,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-09-20 18:46:01,086 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.4130434782608696) internal successors, (157), 45 states have internal predecessors, (157), 29 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 147 [2024-09-20 18:46:01,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:01,087 INFO L225 Difference]: With dead ends: 254 [2024-09-20 18:46:01,087 INFO L226 Difference]: Without dead ends: 191 [2024-09-20 18:46:01,089 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 292 SyntacticMatches, 29 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3167 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1349, Invalid=6307, Unknown=0, NotChecked=0, Total=7656 [2024-09-20 18:46:01,089 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 163 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:01,090 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 630 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 18:46:01,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-09-20 18:46:01,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 148. [2024-09-20 18:46:01,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 117 states have (on average 1.0341880341880343) internal successors, (121), 118 states have internal predecessors, (121), 17 states have call successors, (17), 14 states have call predecessors, (17), 13 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-20 18:46:01,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 154 transitions. [2024-09-20 18:46:01,101 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 154 transitions. Word has length 147 [2024-09-20 18:46:01,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:01,101 INFO L474 AbstractCegarLoop]: Abstraction has 148 states and 154 transitions. [2024-09-20 18:46:01,101 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.4130434782608696) internal successors, (157), 45 states have internal predecessors, (157), 29 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-09-20 18:46:01,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:01,101 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 154 transitions. [2024-09-20 18:46:01,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-09-20 18:46:01,102 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:01,102 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:01,114 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:01,306 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-09-20 18:46:01,307 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:01,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:01,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1180928553, now seen corresponding path program 16 times [2024-09-20 18:46:01,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:01,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773980958] [2024-09-20 18:46:01,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:01,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:01,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:01,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-20 18:46:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:01,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 18:46:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:01,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 18:46:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:01,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 18:46:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:01,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 18:46:01,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:01,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 18:46:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:01,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 18:46:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:01,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 18:46:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:01,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 18:46:01,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:01,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 18:46:01,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:01,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 18:46:01,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:01,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-20 18:46:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:01,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-20 18:46:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:01,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-20 18:46:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:01,751 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 381 proven. 249 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-20 18:46:01,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:01,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773980958] [2024-09-20 18:46:01,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773980958] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:01,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207869039] [2024-09-20 18:46:01,751 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:46:01,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:01,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:01,754 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:01,757 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-20 18:46:01,824 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:46:01,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:01,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-20 18:46:01,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:02,208 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 420 proven. 210 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-20 18:46:02,209 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:02,512 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 420 proven. 210 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-20 18:46:02,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207869039] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:02,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:02,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 49 [2024-09-20 18:46:02,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404555741] [2024-09-20 18:46:02,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:02,513 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-20 18:46:02,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:02,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-20 18:46:02,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=547, Invalid=1805, Unknown=0, NotChecked=0, Total=2352 [2024-09-20 18:46:02,514 INFO L87 Difference]: Start difference. First operand 148 states and 154 transitions. Second operand has 49 states, 49 states have (on average 2.7551020408163267) internal successors, (135), 49 states have internal predecessors, (135), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-20 18:46:02,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:02,861 INFO L93 Difference]: Finished difference Result 262 states and 313 transitions. [2024-09-20 18:46:02,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-20 18:46:02,862 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.7551020408163267) internal successors, (135), 49 states have internal predecessors, (135), 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 157 [2024-09-20 18:46:02,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:02,863 INFO L225 Difference]: With dead ends: 262 [2024-09-20 18:46:02,863 INFO L226 Difference]: Without dead ends: 195 [2024-09-20 18:46:02,864 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 300 SyntacticMatches, 28 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1476 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1029, Invalid=3003, Unknown=0, NotChecked=0, Total=4032 [2024-09-20 18:46:02,865 INFO L434 NwaCegarLoop]: 54 mSDtfsCounter, 112 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:02,865 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 320 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:46:02,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-09-20 18:46:02,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 150. [2024-09-20 18:46:02,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 119 states have (on average 1.0336134453781514) internal successors, (123), 120 states have internal predecessors, (123), 17 states have call successors, (17), 14 states have call predecessors, (17), 13 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-20 18:46:02,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 156 transitions. [2024-09-20 18:46:02,877 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 156 transitions. Word has length 157 [2024-09-20 18:46:02,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:02,877 INFO L474 AbstractCegarLoop]: Abstraction has 150 states and 156 transitions. [2024-09-20 18:46:02,877 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.7551020408163267) internal successors, (135), 49 states have internal predecessors, (135), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-20 18:46:02,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:02,877 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 156 transitions. [2024-09-20 18:46:02,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-09-20 18:46:02,878 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:02,878 INFO L216 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:02,894 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-09-20 18:46:03,079 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:03,079 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:03,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:03,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1351468060, now seen corresponding path program 17 times [2024-09-20 18:46:03,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:03,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305539925] [2024-09-20 18:46:03,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:03,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:03,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:03,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:03,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 18:46:03,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:03,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 18:46:03,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:03,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 18:46:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:03,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 18:46:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:03,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 18:46:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:03,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:46:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:03,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 18:46:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:03,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 18:46:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:03,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 18:46:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:03,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 18:46:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:03,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 18:46:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:03,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 18:46:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:03,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 18:46:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:03,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 18:46:03,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:03,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 238 proven. 422 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-20 18:46:03,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:03,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305539925] [2024-09-20 18:46:03,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305539925] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:03,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427396152] [2024-09-20 18:46:03,413 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:46:03,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:03,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:03,414 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:03,415 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-20 18:46:03,498 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-09-20 18:46:03,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:03,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-20 18:46:03,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:03,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 268 proven. 392 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-20 18:46:03,595 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:03,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 268 proven. 392 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-20 18:46:03,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427396152] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:03,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:03,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 24 [2024-09-20 18:46:03,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853682053] [2024-09-20 18:46:03,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:03,840 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-20 18:46:03,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:03,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-20 18:46:03,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=367, Unknown=0, NotChecked=0, Total=552 [2024-09-20 18:46:03,841 INFO L87 Difference]: Start difference. First operand 150 states and 156 transitions. Second operand has 24 states, 24 states have (on average 4.541666666666667) internal successors, (109), 22 states have internal predecessors, (109), 17 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-20 18:46:03,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:03,953 INFO L93 Difference]: Finished difference Result 169 states and 177 transitions. [2024-09-20 18:46:03,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-20 18:46:03,953 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.541666666666667) internal successors, (109), 22 states have internal predecessors, (109), 17 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 159 [2024-09-20 18:46:03,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:03,954 INFO L225 Difference]: With dead ends: 169 [2024-09-20 18:46:03,954 INFO L226 Difference]: Without dead ends: 167 [2024-09-20 18:46:03,955 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 328 SyntacticMatches, 31 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=191, Invalid=409, Unknown=0, NotChecked=0, Total=600 [2024-09-20 18:46:03,955 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 7 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:03,955 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 288 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:03,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-09-20 18:46:03,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 162. [2024-09-20 18:46:03,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 128 states have (on average 1.03125) internal successors, (132), 129 states have internal predecessors, (132), 19 states have call successors, (19), 15 states have call predecessors, (19), 14 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-20 18:46:03,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 169 transitions. [2024-09-20 18:46:03,965 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 169 transitions. Word has length 159 [2024-09-20 18:46:03,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:03,966 INFO L474 AbstractCegarLoop]: Abstraction has 162 states and 169 transitions. [2024-09-20 18:46:03,966 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.541666666666667) internal successors, (109), 22 states have internal predecessors, (109), 17 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-20 18:46:03,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:03,966 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 169 transitions. [2024-09-20 18:46:03,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-09-20 18:46:03,967 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:03,967 INFO L216 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 16, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:03,979 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 18:46:04,169 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:04,170 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:04,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:04,170 INFO L85 PathProgramCache]: Analyzing trace with hash 881673982, now seen corresponding path program 18 times [2024-09-20 18:46:04,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:04,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271555015] [2024-09-20 18:46:04,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:04,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:04,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:04,644 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:04,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:04,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-20 18:46:04,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:04,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 18:46:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:04,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 18:46:04,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:04,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 18:46:04,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:04,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 18:46:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:04,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:46:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:04,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 18:46:04,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:04,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 18:46:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:04,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 18:46:04,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:04,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 18:46:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:04,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 18:46:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:04,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 18:46:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:04,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 18:46:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:04,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 18:46:04,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:04,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-20 18:46:04,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:04,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-20 18:46:04,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:04,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 499 proven. 285 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-20 18:46:04,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:04,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271555015] [2024-09-20 18:46:04,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271555015] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:04,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214281364] [2024-09-20 18:46:04,665 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:46:04,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:04,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:04,666 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:04,667 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-20 18:46:04,751 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2024-09-20 18:46:04,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:04,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-20 18:46:04,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:05,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 544 proven. 240 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-20 18:46:05,238 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:05,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 544 proven. 240 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-20 18:46:05,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214281364] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:05,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:05,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 56 [2024-09-20 18:46:05,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220609127] [2024-09-20 18:46:05,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:05,585 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-09-20 18:46:05,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:05,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-09-20 18:46:05,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=724, Invalid=2356, Unknown=0, NotChecked=0, Total=3080 [2024-09-20 18:46:05,586 INFO L87 Difference]: Start difference. First operand 162 states and 169 transitions. Second operand has 56 states, 56 states have (on average 2.8035714285714284) internal successors, (157), 56 states have internal predecessors, (157), 36 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-20 18:46:06,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:06,264 INFO L93 Difference]: Finished difference Result 359 states and 433 transitions. [2024-09-20 18:46:06,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-09-20 18:46:06,264 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.8035714285714284) internal successors, (157), 56 states have internal predecessors, (157), 36 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Word has length 175 [2024-09-20 18:46:06,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:06,266 INFO L225 Difference]: With dead ends: 359 [2024-09-20 18:46:06,266 INFO L226 Difference]: Without dead ends: 217 [2024-09-20 18:46:06,268 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 335 SyntacticMatches, 29 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2631 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1930, Invalid=5902, Unknown=0, NotChecked=0, Total=7832 [2024-09-20 18:46:06,269 INFO L434 NwaCegarLoop]: 57 mSDtfsCounter, 150 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:06,269 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 516 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 18:46:06,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-09-20 18:46:06,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 166. [2024-09-20 18:46:06,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 132 states have (on average 1.0303030303030303) internal successors, (136), 133 states have internal predecessors, (136), 19 states have call successors, (19), 15 states have call predecessors, (19), 14 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-20 18:46:06,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 173 transitions. [2024-09-20 18:46:06,281 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 173 transitions. Word has length 175 [2024-09-20 18:46:06,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:06,281 INFO L474 AbstractCegarLoop]: Abstraction has 166 states and 173 transitions. [2024-09-20 18:46:06,281 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.8035714285714284) internal successors, (157), 56 states have internal predecessors, (157), 36 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-20 18:46:06,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:06,282 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 173 transitions. [2024-09-20 18:46:06,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-09-20 18:46:06,282 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:06,282 INFO L216 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:06,296 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-09-20 18:46:06,486 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-09-20 18:46:06,487 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:06,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:06,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1584129992, now seen corresponding path program 19 times [2024-09-20 18:46:06,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:06,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574975404] [2024-09-20 18:46:06,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:06,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:06,834 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:06,836 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-20 18:46:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:06,837 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 18:46:06,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:06,838 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 18:46:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:06,839 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 18:46:06,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:06,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 18:46:06,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:06,841 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 18:46:06,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:06,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 18:46:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:06,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 18:46:06,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:06,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 18:46:06,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:06,846 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 18:46:06,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:06,847 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-20 18:46:06,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:06,848 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-20 18:46:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:06,849 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-20 18:46:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:06,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-20 18:46:06,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:06,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-20 18:46:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:06,852 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-20 18:46:06,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:06,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 304 proven. 546 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-20 18:46:06,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:06,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574975404] [2024-09-20 18:46:06,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574975404] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:06,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761217801] [2024-09-20 18:46:06,854 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:46:06,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:06,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:06,856 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:06,857 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-20 18:46:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:06,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-20 18:46:06,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:07,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 338 proven. 512 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-20 18:46:07,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:07,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 338 proven. 512 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-20 18:46:07,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761217801] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:07,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:07,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 26 [2024-09-20 18:46:07,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648261877] [2024-09-20 18:46:07,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:07,308 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-20 18:46:07,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:07,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-20 18:46:07,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=426, Unknown=0, NotChecked=0, Total=650 [2024-09-20 18:46:07,308 INFO L87 Difference]: Start difference. First operand 166 states and 173 transitions. Second operand has 26 states, 26 states have (on average 4.576923076923077) internal successors, (119), 24 states have internal predecessors, (119), 19 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-20 18:46:07,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:07,425 INFO L93 Difference]: Finished difference Result 185 states and 194 transitions. [2024-09-20 18:46:07,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-20 18:46:07,426 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.576923076923077) internal successors, (119), 24 states have internal predecessors, (119), 19 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 179 [2024-09-20 18:46:07,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:07,427 INFO L225 Difference]: With dead ends: 185 [2024-09-20 18:46:07,427 INFO L226 Difference]: Without dead ends: 183 [2024-09-20 18:46:07,428 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 370 SyntacticMatches, 35 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=230, Invalid=472, Unknown=0, NotChecked=0, Total=702 [2024-09-20 18:46:07,429 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 7 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:07,429 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 332 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:07,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-09-20 18:46:07,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 178. [2024-09-20 18:46:07,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 141 states have (on average 1.0283687943262412) internal successors, (145), 142 states have internal predecessors, (145), 21 states have call successors, (21), 16 states have call predecessors, (21), 15 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-20 18:46:07,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 186 transitions. [2024-09-20 18:46:07,442 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 186 transitions. Word has length 179 [2024-09-20 18:46:07,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:07,442 INFO L474 AbstractCegarLoop]: Abstraction has 178 states and 186 transitions. [2024-09-20 18:46:07,442 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.576923076923077) internal successors, (119), 24 states have internal predecessors, (119), 19 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-20 18:46:07,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:07,443 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 186 transitions. [2024-09-20 18:46:07,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-09-20 18:46:07,444 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:07,444 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:07,456 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:07,644 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-09-20 18:46:07,644 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:07,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:07,645 INFO L85 PathProgramCache]: Analyzing trace with hash 837194410, now seen corresponding path program 20 times [2024-09-20 18:46:07,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:07,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532531094] [2024-09-20 18:46:07,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:07,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:07,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-20 18:46:08,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 18:46:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 18:46:08,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 18:46:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 18:46:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 18:46:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 18:46:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,215 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 18:46:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,216 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 18:46:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 18:46:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,219 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-20 18:46:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-20 18:46:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,221 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-20 18:46:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-20 18:46:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,223 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-20 18:46:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-20 18:46:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,225 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-20 18:46:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,226 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-20 18:46:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:08,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1602 backedges. 633 proven. 357 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-20 18:46:08,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:08,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532531094] [2024-09-20 18:46:08,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532531094] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:08,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70931552] [2024-09-20 18:46:08,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:46:08,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:08,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:08,230 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:08,231 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-20 18:46:08,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:46:08,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:08,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-20 18:46:08,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:08,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1602 backedges. 748 proven. 306 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2024-09-20 18:46:08,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:09,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1602 backedges. 682 proven. 306 refuted. 0 times theorem prover too weak. 614 trivial. 0 not checked. [2024-09-20 18:46:09,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70931552] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:09,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:09,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38, 38] total 59 [2024-09-20 18:46:09,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722675835] [2024-09-20 18:46:09,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:09,320 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-09-20 18:46:09,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:09,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-09-20 18:46:09,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=783, Invalid=2639, Unknown=0, NotChecked=0, Total=3422 [2024-09-20 18:46:09,321 INFO L87 Difference]: Start difference. First operand 178 states and 186 transitions. Second operand has 59 states, 59 states have (on average 2.830508474576271) internal successors, (167), 59 states have internal predecessors, (167), 38 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (39), 38 states have call predecessors, (39), 38 states have call successors, (39) [2024-09-20 18:46:09,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:09,917 INFO L93 Difference]: Finished difference Result 319 states and 381 transitions. [2024-09-20 18:46:09,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-20 18:46:09,917 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.830508474576271) internal successors, (167), 59 states have internal predecessors, (167), 38 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (39), 38 states have call predecessors, (39), 38 states have call successors, (39) Word has length 195 [2024-09-20 18:46:09,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:09,919 INFO L225 Difference]: With dead ends: 319 [2024-09-20 18:46:09,919 INFO L226 Difference]: Without dead ends: 234 [2024-09-20 18:46:09,920 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 375 SyntacticMatches, 34 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2171 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1469, Invalid=4383, Unknown=0, NotChecked=0, Total=5852 [2024-09-20 18:46:09,920 INFO L434 NwaCegarLoop]: 63 mSDtfsCounter, 138 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:09,920 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 481 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 18:46:09,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-09-20 18:46:09,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 180. [2024-09-20 18:46:09,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 143 states have (on average 1.027972027972028) internal successors, (147), 144 states have internal predecessors, (147), 21 states have call successors, (21), 16 states have call predecessors, (21), 15 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-09-20 18:46:09,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 188 transitions. [2024-09-20 18:46:09,934 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 188 transitions. Word has length 195 [2024-09-20 18:46:09,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:09,934 INFO L474 AbstractCegarLoop]: Abstraction has 180 states and 188 transitions. [2024-09-20 18:46:09,934 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.830508474576271) internal successors, (167), 59 states have internal predecessors, (167), 38 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (39), 38 states have call predecessors, (39), 38 states have call successors, (39) [2024-09-20 18:46:09,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:09,934 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 188 transitions. [2024-09-20 18:46:09,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-09-20 18:46:09,935 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:09,935 INFO L216 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:09,948 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-09-20 18:46:10,135 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-09-20 18:46:10,136 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:10,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:10,136 INFO L85 PathProgramCache]: Analyzing trace with hash -2068839121, now seen corresponding path program 21 times [2024-09-20 18:46:10,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:10,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494799781] [2024-09-20 18:46:10,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:10,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:10,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:10,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-20 18:46:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:10,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 18:46:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:10,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 18:46:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:10,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 18:46:10,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:10,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 18:46:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:10,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 18:46:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:10,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 18:46:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:10,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 18:46:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:10,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 18:46:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:10,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 18:46:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:10,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-20 18:46:10,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:10,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-20 18:46:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:10,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-20 18:46:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:10,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 18:46:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:10,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-20 18:46:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:10,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-20 18:46:10,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:10,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-20 18:46:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:10,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-20 18:46:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:10,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 633 proven. 393 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-20 18:46:10,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:10,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494799781] [2024-09-20 18:46:10,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494799781] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:10,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674509093] [2024-09-20 18:46:10,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:46:10,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:10,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:10,732 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:10,733 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-20 18:46:10,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2024-09-20 18:46:10,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:10,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-20 18:46:10,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:11,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 378 proven. 648 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-20 18:46:11,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:11,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 378 proven. 648 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-20 18:46:11,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674509093] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:11,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:11,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 23, 23] total 61 [2024-09-20 18:46:11,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209204530] [2024-09-20 18:46:11,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:11,961 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-09-20 18:46:11,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:11,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-09-20 18:46:11,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=614, Invalid=3046, Unknown=0, NotChecked=0, Total=3660 [2024-09-20 18:46:11,962 INFO L87 Difference]: Start difference. First operand 180 states and 188 transitions. Second operand has 61 states, 61 states have (on average 3.3934426229508197) internal successors, (207), 60 states have internal predecessors, (207), 39 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-20 18:46:12,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:12,863 INFO L93 Difference]: Finished difference Result 331 states and 397 transitions. [2024-09-20 18:46:12,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-09-20 18:46:12,863 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.3934426229508197) internal successors, (207), 60 states have internal predecessors, (207), 39 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 197 [2024-09-20 18:46:12,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:12,865 INFO L225 Difference]: With dead ends: 331 [2024-09-20 18:46:12,865 INFO L226 Difference]: Without dead ends: 248 [2024-09-20 18:46:12,866 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 392 SyntacticMatches, 39 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5962 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2399, Invalid=11407, Unknown=0, NotChecked=0, Total=13806 [2024-09-20 18:46:12,867 INFO L434 NwaCegarLoop]: 64 mSDtfsCounter, 221 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 1240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:12,867 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 900 Invalid, 1240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 18:46:12,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-09-20 18:46:12,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 190. [2024-09-20 18:46:12,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 151 states have (on average 1.0264900662251655) internal successors, (155), 152 states have internal predecessors, (155), 22 states have call successors, (22), 17 states have call predecessors, (22), 16 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-09-20 18:46:12,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 198 transitions. [2024-09-20 18:46:12,882 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 198 transitions. Word has length 197 [2024-09-20 18:46:12,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:12,884 INFO L474 AbstractCegarLoop]: Abstraction has 190 states and 198 transitions. [2024-09-20 18:46:12,884 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.3934426229508197) internal successors, (207), 60 states have internal predecessors, (207), 39 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-20 18:46:12,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:12,885 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 198 transitions. [2024-09-20 18:46:12,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-09-20 18:46:12,886 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:12,886 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:12,898 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 18:46:13,086 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-09-20 18:46:13,086 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:13,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:13,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1618547813, now seen corresponding path program 22 times [2024-09-20 18:46:13,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:13,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205056856] [2024-09-20 18:46:13,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:13,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:13,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:13,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-20 18:46:13,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 18:46:13,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 18:46:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 18:46:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:46:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 18:46:13,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 18:46:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,724 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 18:46:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 18:46:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 18:46:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,727 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 18:46:13,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 18:46:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 18:46:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-20 18:46:13,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-20 18:46:13,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-20 18:46:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-20 18:46:13,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-20 18:46:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-20 18:46:13,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:13,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 706 proven. 434 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-20 18:46:13,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:13,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205056856] [2024-09-20 18:46:13,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205056856] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:13,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516905016] [2024-09-20 18:46:13,738 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:46:13,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:13,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:13,740 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:13,741 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-20 18:46:13,822 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:46:13,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:13,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-20 18:46:13,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:14,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 418 proven. 722 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-20 18:46:14,266 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:15,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 418 proven. 722 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-20 18:46:15,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516905016] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:15,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:15,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 24, 24] total 64 [2024-09-20 18:46:15,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189455237] [2024-09-20 18:46:15,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:15,050 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-09-20 18:46:15,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:15,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-09-20 18:46:15,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=676, Invalid=3356, Unknown=0, NotChecked=0, Total=4032 [2024-09-20 18:46:15,051 INFO L87 Difference]: Start difference. First operand 190 states and 198 transitions. Second operand has 64 states, 64 states have (on average 3.390625) internal successors, (217), 63 states have internal predecessors, (217), 41 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-20 18:46:15,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:15,959 INFO L93 Difference]: Finished difference Result 348 states and 417 transitions. [2024-09-20 18:46:15,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-09-20 18:46:15,959 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 3.390625) internal successors, (217), 63 states have internal predecessors, (217), 41 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 207 [2024-09-20 18:46:15,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:15,961 INFO L225 Difference]: With dead ends: 348 [2024-09-20 18:46:15,961 INFO L226 Difference]: Without dead ends: 261 [2024-09-20 18:46:15,963 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 412 SyntacticMatches, 41 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6626 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2645, Invalid=12607, Unknown=0, NotChecked=0, Total=15252 [2024-09-20 18:46:15,963 INFO L434 NwaCegarLoop]: 67 mSDtfsCounter, 257 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 1258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:15,964 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 935 Invalid, 1258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 18:46:15,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-09-20 18:46:15,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 200. [2024-09-20 18:46:15,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 159 states have (on average 1.0251572327044025) internal successors, (163), 160 states have internal predecessors, (163), 23 states have call successors, (23), 18 states have call predecessors, (23), 17 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-20 18:46:15,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 208 transitions. [2024-09-20 18:46:15,990 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 208 transitions. Word has length 207 [2024-09-20 18:46:15,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:15,990 INFO L474 AbstractCegarLoop]: Abstraction has 200 states and 208 transitions. [2024-09-20 18:46:15,990 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 3.390625) internal successors, (217), 63 states have internal predecessors, (217), 41 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-20 18:46:15,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:15,990 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 208 transitions. [2024-09-20 18:46:15,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-09-20 18:46:15,992 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:15,992 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:16,004 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-09-20 18:46:16,192 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-09-20 18:46:16,192 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:16,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:16,193 INFO L85 PathProgramCache]: Analyzing trace with hash 189971291, now seen corresponding path program 23 times [2024-09-20 18:46:16,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:16,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927378582] [2024-09-20 18:46:16,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:16,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:16,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-20 18:46:16,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 18:46:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 18:46:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 18:46:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 18:46:16,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 18:46:16,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 18:46:16,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 18:46:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 18:46:16,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 18:46:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 18:46:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-20 18:46:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-20 18:46:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-20 18:46:16,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-20 18:46:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 18:46:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-20 18:46:16,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-20 18:46:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-20 18:46:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-20 18:46:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:16,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 783 proven. 477 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-20 18:46:16,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:16,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927378582] [2024-09-20 18:46:16,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927378582] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:16,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505700980] [2024-09-20 18:46:16,906 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:46:16,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:16,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:16,907 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:16,909 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-20 18:46:17,007 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2024-09-20 18:46:17,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:17,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-20 18:46:17,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:17,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 840 proven. 420 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-20 18:46:17,642 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:18,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 840 proven. 420 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-20 18:46:18,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505700980] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:18,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:18,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 67 [2024-09-20 18:46:18,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537793971] [2024-09-20 18:46:18,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:18,178 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-09-20 18:46:18,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:18,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-09-20 18:46:18,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1015, Invalid=3407, Unknown=0, NotChecked=0, Total=4422 [2024-09-20 18:46:18,180 INFO L87 Difference]: Start difference. First operand 200 states and 208 transitions. Second operand has 67 states, 67 states have (on average 2.7313432835820897) internal successors, (183), 67 states have internal predecessors, (183), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-20 18:46:18,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:18,694 INFO L93 Difference]: Finished difference Result 356 states and 427 transitions. [2024-09-20 18:46:18,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-09-20 18:46:18,694 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.7313432835820897) internal successors, (183), 67 states have internal predecessors, (183), 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 217 [2024-09-20 18:46:18,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:18,696 INFO L225 Difference]: With dead ends: 356 [2024-09-20 18:46:18,696 INFO L226 Difference]: Without dead ends: 265 [2024-09-20 18:46:18,697 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 414 SyntacticMatches, 40 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2832 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1941, Invalid=5715, Unknown=0, NotChecked=0, Total=7656 [2024-09-20 18:46:18,698 INFO L434 NwaCegarLoop]: 72 mSDtfsCounter, 156 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:18,698 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 561 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:46:18,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-09-20 18:46:18,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 202. [2024-09-20 18:46:18,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 161 states have (on average 1.0248447204968945) internal successors, (165), 162 states have internal predecessors, (165), 23 states have call successors, (23), 18 states have call predecessors, (23), 17 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-20 18:46:18,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 210 transitions. [2024-09-20 18:46:18,713 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 210 transitions. Word has length 217 [2024-09-20 18:46:18,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:18,713 INFO L474 AbstractCegarLoop]: Abstraction has 202 states and 210 transitions. [2024-09-20 18:46:18,714 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.7313432835820897) internal successors, (183), 67 states have internal predecessors, (183), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-09-20 18:46:18,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:18,714 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 210 transitions. [2024-09-20 18:46:18,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-09-20 18:46:18,715 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:18,715 INFO L216 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:18,727 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:18,915 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-09-20 18:46:18,916 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:18,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:18,916 INFO L85 PathProgramCache]: Analyzing trace with hash -748729312, now seen corresponding path program 24 times [2024-09-20 18:46:18,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:18,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886461157] [2024-09-20 18:46:18,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:18,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:19,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:19,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 18:46:19,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:19,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 18:46:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:19,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 18:46:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:19,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 18:46:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:19,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 18:46:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:19,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 18:46:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:19,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 18:46:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:19,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 18:46:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:19,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 18:46:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:19,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-20 18:46:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:19,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-20 18:46:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:19,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-20 18:46:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:19,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-20 18:46:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:19,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-20 18:46:19,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:19,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-20 18:46:19,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:19,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-20 18:46:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:19,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-20 18:46:19,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:19,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-20 18:46:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:19,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-20 18:46:19,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:19,421 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-20 18:46:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:19,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2062 backedges. 460 proven. 842 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-20 18:46:19,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:19,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886461157] [2024-09-20 18:46:19,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886461157] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:19,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488337305] [2024-09-20 18:46:19,426 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:46:19,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:19,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:19,429 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:19,430 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-09-20 18:46:19,528 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2024-09-20 18:46:19,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:19,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-09-20 18:46:19,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:19,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2062 backedges. 502 proven. 800 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-20 18:46:19,657 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:20,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2062 backedges. 502 proven. 800 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-20 18:46:20,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488337305] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:20,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:20,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 30 [2024-09-20 18:46:20,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886907390] [2024-09-20 18:46:20,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:20,059 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-20 18:46:20,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:20,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-20 18:46:20,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=556, Unknown=0, NotChecked=0, Total=870 [2024-09-20 18:46:20,060 INFO L87 Difference]: Start difference. First operand 202 states and 210 transitions. Second operand has 30 states, 30 states have (on average 4.633333333333334) internal successors, (139), 28 states have internal predecessors, (139), 23 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-20 18:46:20,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:20,205 INFO L93 Difference]: Finished difference Result 221 states and 231 transitions. [2024-09-20 18:46:20,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-20 18:46:20,205 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.633333333333334) internal successors, (139), 28 states have internal predecessors, (139), 23 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 219 [2024-09-20 18:46:20,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:20,207 INFO L225 Difference]: With dead ends: 221 [2024-09-20 18:46:20,207 INFO L226 Difference]: Without dead ends: 219 [2024-09-20 18:46:20,207 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 454 SyntacticMatches, 43 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=320, Invalid=610, Unknown=0, NotChecked=0, Total=930 [2024-09-20 18:46:20,207 INFO L434 NwaCegarLoop]: 40 mSDtfsCounter, 9 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:20,207 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 365 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:20,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-09-20 18:46:20,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 214. [2024-09-20 18:46:20,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 170 states have (on average 1.0235294117647058) internal successors, (174), 171 states have internal predecessors, (174), 25 states have call successors, (25), 19 states have call predecessors, (25), 18 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-20 18:46:20,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 223 transitions. [2024-09-20 18:46:20,225 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 223 transitions. Word has length 219 [2024-09-20 18:46:20,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:20,225 INFO L474 AbstractCegarLoop]: Abstraction has 214 states and 223 transitions. [2024-09-20 18:46:20,225 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.633333333333334) internal successors, (139), 28 states have internal predecessors, (139), 23 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-09-20 18:46:20,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:20,226 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 223 transitions. [2024-09-20 18:46:20,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2024-09-20 18:46:20,226 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:20,227 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 22, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:20,239 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:20,427 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-09-20 18:46:20,427 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:20,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:20,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1979074306, now seen corresponding path program 25 times [2024-09-20 18:46:20,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:20,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973901577] [2024-09-20 18:46:20,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:20,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:21,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-20 18:46:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 18:46:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 18:46:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 18:46:21,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 18:46:21,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 18:46:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 18:46:21,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 18:46:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 18:46:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-20 18:46:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-20 18:46:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-20 18:46:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-20 18:46:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-20 18:46:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-20 18:46:21,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-20 18:46:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-20 18:46:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-20 18:46:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-20 18:46:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-20 18:46:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-20 18:46:21,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-20 18:46:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2398 backedges. 949 proven. 525 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-20 18:46:21,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:21,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973901577] [2024-09-20 18:46:21,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973901577] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:21,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515502884] [2024-09-20 18:46:21,190 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:46:21,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:21,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:21,191 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:21,193 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-09-20 18:46:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:21,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-20 18:46:21,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:22,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2398 backedges. 1092 proven. 462 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2024-09-20 18:46:22,024 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:22,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2398 backedges. 1010 proven. 462 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked. [2024-09-20 18:46:22,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515502884] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:22,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:22,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46, 46] total 71 [2024-09-20 18:46:22,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704456086] [2024-09-20 18:46:22,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:22,606 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-09-20 18:46:22,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:22,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-09-20 18:46:22,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1131, Invalid=3839, Unknown=0, NotChecked=0, Total=4970 [2024-09-20 18:46:22,607 INFO L87 Difference]: Start difference. First operand 214 states and 223 transitions. Second operand has 71 states, 71 states have (on average 2.8028169014084505) internal successors, (199), 71 states have internal predecessors, (199), 46 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (47), 46 states have call predecessors, (47), 46 states have call successors, (47) [2024-09-20 18:46:23,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:23,171 INFO L93 Difference]: Finished difference Result 383 states and 458 transitions. [2024-09-20 18:46:23,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-09-20 18:46:23,171 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.8028169014084505) internal successors, (199), 71 states have internal predecessors, (199), 46 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (47), 46 states have call predecessors, (47), 46 states have call successors, (47) Word has length 235 [2024-09-20 18:46:23,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:23,173 INFO L225 Difference]: With dead ends: 383 [2024-09-20 18:46:23,173 INFO L226 Difference]: Without dead ends: 282 [2024-09-20 18:46:23,174 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 451 SyntacticMatches, 42 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3187 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2145, Invalid=6411, Unknown=0, NotChecked=0, Total=8556 [2024-09-20 18:46:23,175 INFO L434 NwaCegarLoop]: 75 mSDtfsCounter, 164 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:23,175 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 604 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:46:23,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-09-20 18:46:23,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 216. [2024-09-20 18:46:23,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 172 states have (on average 1.0232558139534884) internal successors, (176), 173 states have internal predecessors, (176), 25 states have call successors, (25), 19 states have call predecessors, (25), 18 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-20 18:46:23,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 225 transitions. [2024-09-20 18:46:23,201 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 225 transitions. Word has length 235 [2024-09-20 18:46:23,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:23,201 INFO L474 AbstractCegarLoop]: Abstraction has 216 states and 225 transitions. [2024-09-20 18:46:23,202 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.8028169014084505) internal successors, (199), 71 states have internal predecessors, (199), 46 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (47), 46 states have call predecessors, (47), 46 states have call successors, (47) [2024-09-20 18:46:23,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:23,202 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 225 transitions. [2024-09-20 18:46:23,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-09-20 18:46:23,205 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:23,205 INFO L216 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:23,217 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-09-20 18:46:23,406 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-09-20 18:46:23,407 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:23,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:23,407 INFO L85 PathProgramCache]: Analyzing trace with hash -300150649, now seen corresponding path program 26 times [2024-09-20 18:46:23,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:23,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066175546] [2024-09-20 18:46:23,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:23,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:24,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:24,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-20 18:46:24,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:24,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-20 18:46:24,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:24,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 18:46:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:24,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 18:46:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:24,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 18:46:24,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:24,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 18:46:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:24,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 18:46:24,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:24,190 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 18:46:24,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:24,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 18:46:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:24,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-20 18:46:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:24,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-20 18:46:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:24,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-20 18:46:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:24,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 18:46:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:24,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-20 18:46:24,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:24,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-20 18:46:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:24,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-20 18:46:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:24,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-20 18:46:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:24,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-20 18:46:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:24,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-20 18:46:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:24,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-20 18:46:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:24,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-20 18:46:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:24,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-20 18:46:24,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:24,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2442 backedges. 949 proven. 569 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-20 18:46:24,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:24,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066175546] [2024-09-20 18:46:24,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066175546] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:24,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505933091] [2024-09-20 18:46:24,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:46:24,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:24,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:24,211 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:24,212 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-09-20 18:46:24,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:46:24,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:24,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-20 18:46:24,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:24,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2442 backedges. 550 proven. 968 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-20 18:46:24,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:25,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2442 backedges. 550 proven. 968 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-20 18:46:25,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505933091] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:25,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:25,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 27, 27] total 73 [2024-09-20 18:46:25,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887155402] [2024-09-20 18:46:25,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:25,845 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-09-20 18:46:25,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:25,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-09-20 18:46:25,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=880, Invalid=4376, Unknown=0, NotChecked=0, Total=5256 [2024-09-20 18:46:25,846 INFO L87 Difference]: Start difference. First operand 216 states and 225 transitions. Second operand has 73 states, 73 states have (on average 3.3835616438356166) internal successors, (247), 72 states have internal predecessors, (247), 47 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-20 18:46:26,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:26,908 INFO L93 Difference]: Finished difference Result 395 states and 474 transitions. [2024-09-20 18:46:26,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-09-20 18:46:26,908 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 3.3835616438356166) internal successors, (247), 72 states have internal predecessors, (247), 47 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Word has length 237 [2024-09-20 18:46:26,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:26,910 INFO L225 Difference]: With dead ends: 395 [2024-09-20 18:46:26,910 INFO L226 Difference]: Without dead ends: 296 [2024-09-20 18:46:26,912 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 472 SyntacticMatches, 47 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8828 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3455, Invalid=16567, Unknown=0, NotChecked=0, Total=20022 [2024-09-20 18:46:26,912 INFO L434 NwaCegarLoop]: 76 mSDtfsCounter, 279 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:26,912 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 1004 Invalid, 1433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 18:46:26,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-09-20 18:46:26,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 226. [2024-09-20 18:46:26,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 180 states have (on average 1.0222222222222221) internal successors, (184), 181 states have internal predecessors, (184), 26 states have call successors, (26), 20 states have call predecessors, (26), 19 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-20 18:46:26,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 235 transitions. [2024-09-20 18:46:26,929 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 235 transitions. Word has length 237 [2024-09-20 18:46:26,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:26,930 INFO L474 AbstractCegarLoop]: Abstraction has 226 states and 235 transitions. [2024-09-20 18:46:26,930 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 3.3835616438356166) internal successors, (247), 72 states have internal predecessors, (247), 47 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-20 18:46:26,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:26,930 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 235 transitions. [2024-09-20 18:46:26,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2024-09-20 18:46:26,931 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:26,931 INFO L216 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:26,945 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-09-20 18:46:27,131 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,27 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:27,132 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:27,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:27,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1632362173, now seen corresponding path program 27 times [2024-09-20 18:46:27,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:27,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901283503] [2024-09-20 18:46:27,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:27,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:27,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:27,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-20 18:46:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 18:46:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 18:46:27,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:46:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 18:46:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:27,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 18:46:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:28,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 18:46:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:28,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 18:46:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:28,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 18:46:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:28,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 18:46:28,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:28,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 18:46:28,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:28,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 18:46:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:28,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-20 18:46:28,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:28,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-20 18:46:28,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:28,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-20 18:46:28,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:28,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-20 18:46:28,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:28,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-20 18:46:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:28,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-20 18:46:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:28,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-20 18:46:28,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:28,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-20 18:46:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:28,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-20 18:46:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:28,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-20 18:46:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:28,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-20 18:46:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:28,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2668 backedges. 1038 proven. 618 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-20 18:46:28,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:28,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901283503] [2024-09-20 18:46:28,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901283503] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:28,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872600713] [2024-09-20 18:46:28,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:46:28,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:28,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:28,018 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:28,018 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-09-20 18:46:28,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2024-09-20 18:46:28,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:28,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-20 18:46:28,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:28,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2668 backedges. 598 proven. 1058 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-20 18:46:28,726 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:29,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2668 backedges. 598 proven. 1058 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-20 18:46:29,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872600713] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:29,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:29,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 28, 28] total 76 [2024-09-20 18:46:29,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366257065] [2024-09-20 18:46:29,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:29,805 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-09-20 18:46:29,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:29,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-09-20 18:46:29,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=954, Invalid=4746, Unknown=0, NotChecked=0, Total=5700 [2024-09-20 18:46:29,806 INFO L87 Difference]: Start difference. First operand 226 states and 235 transitions. Second operand has 76 states, 76 states have (on average 3.3815789473684212) internal successors, (257), 75 states have internal predecessors, (257), 49 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-20 18:46:30,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:30,949 INFO L93 Difference]: Finished difference Result 412 states and 494 transitions. [2024-09-20 18:46:30,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-09-20 18:46:30,949 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 3.3815789473684212) internal successors, (257), 75 states have internal predecessors, (257), 49 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 247 [2024-09-20 18:46:30,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:30,951 INFO L225 Difference]: With dead ends: 412 [2024-09-20 18:46:30,951 INFO L226 Difference]: Without dead ends: 309 [2024-09-20 18:46:30,952 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 492 SyntacticMatches, 49 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9632 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3749, Invalid=18007, Unknown=0, NotChecked=0, Total=21756 [2024-09-20 18:46:30,953 INFO L434 NwaCegarLoop]: 79 mSDtfsCounter, 269 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 1569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:30,953 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 1232 Invalid, 1569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 18:46:30,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-09-20 18:46:30,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 236. [2024-09-20 18:46:30,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 188 states have (on average 1.0212765957446808) internal successors, (192), 189 states have internal predecessors, (192), 27 states have call successors, (27), 21 states have call predecessors, (27), 20 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-20 18:46:30,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 245 transitions. [2024-09-20 18:46:30,972 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 245 transitions. Word has length 247 [2024-09-20 18:46:30,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:30,972 INFO L474 AbstractCegarLoop]: Abstraction has 236 states and 245 transitions. [2024-09-20 18:46:30,972 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 3.3815789473684212) internal successors, (257), 75 states have internal predecessors, (257), 49 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-20 18:46:30,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:30,972 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 245 transitions. [2024-09-20 18:46:30,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-09-20 18:46:30,974 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:30,974 INFO L216 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:30,987 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:31,174 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:31,174 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:31,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:31,175 INFO L85 PathProgramCache]: Analyzing trace with hash -334723917, now seen corresponding path program 28 times [2024-09-20 18:46:31,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:31,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318711691] [2024-09-20 18:46:31,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:31,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:32,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-20 18:46:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 18:46:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 18:46:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 18:46:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 18:46:32,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 18:46:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 18:46:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 18:46:32,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 18:46:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 18:46:32,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-20 18:46:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-20 18:46:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-20 18:46:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-20 18:46:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 18:46:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-20 18:46:32,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-20 18:46:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-20 18:46:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-20 18:46:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-20 18:46:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-20 18:46:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-20 18:46:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-20 18:46:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-20 18:46:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:32,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 1131 proven. 669 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-20 18:46:32,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:32,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318711691] [2024-09-20 18:46:32,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318711691] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:32,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293350813] [2024-09-20 18:46:32,095 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:46:32,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:32,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:32,097 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:32,097 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-09-20 18:46:32,194 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:46:32,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:32,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-09-20 18:46:32,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:33,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 1200 proven. 600 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-20 18:46:33,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:33,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 1200 proven. 600 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-20 18:46:33,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293350813] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:33,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:33,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 52] total 79 [2024-09-20 18:46:33,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917477785] [2024-09-20 18:46:33,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:33,672 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-09-20 18:46:33,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:33,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-09-20 18:46:33,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1407, Invalid=4755, Unknown=0, NotChecked=0, Total=6162 [2024-09-20 18:46:33,674 INFO L87 Difference]: Start difference. First operand 236 states and 245 transitions. Second operand has 79 states, 79 states have (on average 2.721518987341772) internal successors, (215), 79 states have internal predecessors, (215), 51 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-20 18:46:34,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:34,411 INFO L93 Difference]: Finished difference Result 420 states and 504 transitions. [2024-09-20 18:46:34,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-09-20 18:46:34,412 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.721518987341772) internal successors, (215), 79 states have internal predecessors, (215), 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 257 [2024-09-20 18:46:34,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:34,414 INFO L225 Difference]: With dead ends: 420 [2024-09-20 18:46:34,414 INFO L226 Difference]: Without dead ends: 313 [2024-09-20 18:46:34,415 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 490 SyntacticMatches, 48 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3976 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2709, Invalid=8003, Unknown=0, NotChecked=0, Total=10712 [2024-09-20 18:46:34,415 INFO L434 NwaCegarLoop]: 84 mSDtfsCounter, 184 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:34,415 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 658 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 18:46:34,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-09-20 18:46:34,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 238. [2024-09-20 18:46:34,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 190 states have (on average 1.0210526315789474) internal successors, (194), 191 states have internal predecessors, (194), 27 states have call successors, (27), 21 states have call predecessors, (27), 20 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-20 18:46:34,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 247 transitions. [2024-09-20 18:46:34,435 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 247 transitions. Word has length 257 [2024-09-20 18:46:34,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:34,435 INFO L474 AbstractCegarLoop]: Abstraction has 238 states and 247 transitions. [2024-09-20 18:46:34,435 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 2.721518987341772) internal successors, (215), 79 states have internal predecessors, (215), 51 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-20 18:46:34,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:34,435 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 247 transitions. [2024-09-20 18:46:34,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-09-20 18:46:34,436 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:34,436 INFO L216 NwaCegarLoop]: trace histogram [26, 25, 25, 25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:34,453 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-09-20 18:46:34,637 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:34,637 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:34,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:34,637 INFO L85 PathProgramCache]: Analyzing trace with hash 126495864, now seen corresponding path program 29 times [2024-09-20 18:46:34,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:34,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878901480] [2024-09-20 18:46:34,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:34,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 18:46:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 18:46:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 18:46:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 18:46:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 18:46:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 18:46:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 18:46:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 18:46:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-20 18:46:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-20 18:46:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-20 18:46:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-20 18:46:35,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-20 18:46:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-20 18:46:35,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-20 18:46:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-20 18:46:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-20 18:46:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-20 18:46:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-20 18:46:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-20 18:46:35,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-20 18:46:35,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-20 18:46:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-20 18:46:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-20 18:46:35,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:35,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2954 backedges. 648 proven. 1202 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-20 18:46:35,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:35,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878901480] [2024-09-20 18:46:35,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878901480] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:35,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565955497] [2024-09-20 18:46:35,274 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:46:35,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:35,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:35,276 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:35,278 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-09-20 18:46:35,393 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2024-09-20 18:46:35,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:35,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-09-20 18:46:35,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:35,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2954 backedges. 698 proven. 1152 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-20 18:46:35,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:36,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2954 backedges. 698 proven. 1152 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-20 18:46:36,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565955497] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:36,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:36,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 34 [2024-09-20 18:46:36,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35917476] [2024-09-20 18:46:36,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:36,034 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-20 18:46:36,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:36,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-20 18:46:36,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=702, Unknown=0, NotChecked=0, Total=1122 [2024-09-20 18:46:36,035 INFO L87 Difference]: Start difference. First operand 238 states and 247 transitions. Second operand has 34 states, 34 states have (on average 4.676470588235294) internal successors, (159), 32 states have internal predecessors, (159), 27 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-20 18:46:36,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:36,159 INFO L93 Difference]: Finished difference Result 257 states and 268 transitions. [2024-09-20 18:46:36,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-20 18:46:36,159 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.676470588235294) internal successors, (159), 32 states have internal predecessors, (159), 27 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 259 [2024-09-20 18:46:36,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:36,161 INFO L225 Difference]: With dead ends: 257 [2024-09-20 18:46:36,161 INFO L226 Difference]: Without dead ends: 255 [2024-09-20 18:46:36,161 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 538 SyntacticMatches, 51 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1066 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=426, Invalid=764, Unknown=0, NotChecked=0, Total=1190 [2024-09-20 18:46:36,162 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 10 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:36,162 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 366 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:36,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-09-20 18:46:36,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 250. [2024-09-20 18:46:36,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 199 states have (on average 1.020100502512563) internal successors, (203), 200 states have internal predecessors, (203), 29 states have call successors, (29), 22 states have call predecessors, (29), 21 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-20 18:46:36,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 260 transitions. [2024-09-20 18:46:36,182 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 260 transitions. Word has length 259 [2024-09-20 18:46:36,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:36,183 INFO L474 AbstractCegarLoop]: Abstraction has 250 states and 260 transitions. [2024-09-20 18:46:36,184 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.676470588235294) internal successors, (159), 32 states have internal predecessors, (159), 27 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-09-20 18:46:36,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:36,184 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 260 transitions. [2024-09-20 18:46:36,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2024-09-20 18:46:36,185 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:36,185 INFO L216 NwaCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 26, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:36,198 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:36,385 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:36,386 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:36,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:36,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1925543770, now seen corresponding path program 30 times [2024-09-20 18:46:36,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:36,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486814471] [2024-09-20 18:46:36,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:36,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:36,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:37,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-20 18:46:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 18:46:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 18:46:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 18:46:37,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 18:46:37,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 18:46:37,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 18:46:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 18:46:37,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-20 18:46:37,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-20 18:46:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-20 18:46:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-20 18:46:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-20 18:46:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-20 18:46:37,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-20 18:46:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-20 18:46:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-20 18:46:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-20 18:46:37,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-20 18:46:37,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-20 18:46:37,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-20 18:46:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-20 18:46:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-20 18:46:37,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-20 18:46:37,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-20 18:46:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-20 18:46:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:37,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3354 backedges. 1329 proven. 725 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-20 18:46:37,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:37,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486814471] [2024-09-20 18:46:37,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486814471] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:37,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704968790] [2024-09-20 18:46:37,407 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:46:37,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:37,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:37,408 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:37,409 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-09-20 18:46:37,532 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-09-20 18:46:37,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:37,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 747 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-09-20 18:46:37,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:38,459 INFO L134 CoverageAnalysis]: Checked inductivity of 3354 backedges. 1404 proven. 650 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-20 18:46:38,460 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:39,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3354 backedges. 1404 proven. 650 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-20 18:46:39,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704968790] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:39,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:39,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 86 [2024-09-20 18:46:39,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175681042] [2024-09-20 18:46:39,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:39,231 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-09-20 18:46:39,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:39,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-09-20 18:46:39,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1684, Invalid=5626, Unknown=0, NotChecked=0, Total=7310 [2024-09-20 18:46:39,233 INFO L87 Difference]: Start difference. First operand 250 states and 260 transitions. Second operand has 86 states, 86 states have (on average 2.755813953488372) internal successors, (237), 86 states have internal predecessors, (237), 56 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2024-09-20 18:46:40,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:40,466 INFO L93 Difference]: Finished difference Result 557 states and 674 transitions. [2024-09-20 18:46:40,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-09-20 18:46:40,466 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.755813953488372) internal successors, (237), 86 states have internal predecessors, (237), 56 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Word has length 275 [2024-09-20 18:46:40,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:40,468 INFO L225 Difference]: With dead ends: 557 [2024-09-20 18:46:40,468 INFO L226 Difference]: Without dead ends: 335 [2024-09-20 18:46:40,471 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 711 GetRequests, 525 SyntacticMatches, 49 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6589 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=4680, Invalid=14502, Unknown=0, NotChecked=0, Total=19182 [2024-09-20 18:46:40,471 INFO L434 NwaCegarLoop]: 87 mSDtfsCounter, 240 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:40,471 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 829 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 18:46:40,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-09-20 18:46:40,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 254. [2024-09-20 18:46:40,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 203 states have (on average 1.019704433497537) internal successors, (207), 204 states have internal predecessors, (207), 29 states have call successors, (29), 22 states have call predecessors, (29), 21 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-20 18:46:40,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 264 transitions. [2024-09-20 18:46:40,504 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 264 transitions. Word has length 275 [2024-09-20 18:46:40,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:40,504 INFO L474 AbstractCegarLoop]: Abstraction has 254 states and 264 transitions. [2024-09-20 18:46:40,505 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 2.755813953488372) internal successors, (237), 86 states have internal predecessors, (237), 56 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2024-09-20 18:46:40,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:40,505 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 264 transitions. [2024-09-20 18:46:40,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2024-09-20 18:46:40,508 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:40,508 INFO L216 NwaCegarLoop]: trace histogram [28, 27, 27, 27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:40,522 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:40,709 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-09-20 18:46:40,709 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:40,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:40,710 INFO L85 PathProgramCache]: Analyzing trace with hash -407000284, now seen corresponding path program 31 times [2024-09-20 18:46:40,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:40,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045203816] [2024-09-20 18:46:40,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:40,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:40,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:41,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:41,458 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 18:46:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:41,459 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 18:46:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:41,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:46:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:41,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 18:46:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:41,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 18:46:41,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:41,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 18:46:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:41,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 18:46:41,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:41,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 18:46:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:41,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 18:46:41,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:41,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 18:46:41,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:41,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 18:46:41,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:41,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-20 18:46:41,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:41,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-20 18:46:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:41,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-20 18:46:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:41,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-20 18:46:41,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:41,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-20 18:46:41,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:41,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-20 18:46:41,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:41,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-20 18:46:41,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:41,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-20 18:46:41,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:41,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-20 18:46:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:41,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-20 18:46:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:41,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-20 18:46:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:41,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-20 18:46:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:41,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-20 18:46:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:41,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-20 18:46:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:41,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-20 18:46:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:41,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3460 backedges. 754 proven. 1406 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-20 18:46:41,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:41,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045203816] [2024-09-20 18:46:41,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045203816] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:41,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166401023] [2024-09-20 18:46:41,483 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:46:41,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:41,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:41,484 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:41,485 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-09-20 18:46:41,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:41,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-09-20 18:46:41,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:41,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3460 backedges. 808 proven. 1352 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-20 18:46:41,743 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:42,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3460 backedges. 808 proven. 1352 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-20 18:46:42,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166401023] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:42,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:42,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 36 [2024-09-20 18:46:42,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471578164] [2024-09-20 18:46:42,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:42,296 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-20 18:46:42,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:42,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-20 18:46:42,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=479, Invalid=781, Unknown=0, NotChecked=0, Total=1260 [2024-09-20 18:46:42,297 INFO L87 Difference]: Start difference. First operand 254 states and 264 transitions. Second operand has 36 states, 36 states have (on average 4.694444444444445) internal successors, (169), 34 states have internal predecessors, (169), 29 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-20 18:46:42,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:42,440 INFO L93 Difference]: Finished difference Result 273 states and 285 transitions. [2024-09-20 18:46:42,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-20 18:46:42,441 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.694444444444445) internal successors, (169), 34 states have internal predecessors, (169), 29 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 279 [2024-09-20 18:46:42,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:42,443 INFO L225 Difference]: With dead ends: 273 [2024-09-20 18:46:42,443 INFO L226 Difference]: Without dead ends: 271 [2024-09-20 18:46:42,443 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 580 SyntacticMatches, 55 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1206 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=485, Invalid=847, Unknown=0, NotChecked=0, Total=1332 [2024-09-20 18:46:42,443 INFO L434 NwaCegarLoop]: 46 mSDtfsCounter, 9 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:42,444 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 444 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:46:42,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-09-20 18:46:42,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 266. [2024-09-20 18:46:42,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 212 states have (on average 1.0188679245283019) internal successors, (216), 213 states have internal predecessors, (216), 31 states have call successors, (31), 23 states have call predecessors, (31), 22 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-20 18:46:42,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 277 transitions. [2024-09-20 18:46:42,465 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 277 transitions. Word has length 279 [2024-09-20 18:46:42,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:42,465 INFO L474 AbstractCegarLoop]: Abstraction has 266 states and 277 transitions. [2024-09-20 18:46:42,466 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.694444444444445) internal successors, (169), 34 states have internal predecessors, (169), 29 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-20 18:46:42,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:42,466 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 277 transitions. [2024-09-20 18:46:42,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-09-20 18:46:42,467 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:42,467 INFO L216 NwaCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 28, 28, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:42,480 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:42,667 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-09-20 18:46:42,668 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:42,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:42,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1516117510, now seen corresponding path program 32 times [2024-09-20 18:46:42,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:42,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023172069] [2024-09-20 18:46:42,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:42,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-20 18:46:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 18:46:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:46:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 18:46:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 18:46:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 18:46:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 18:46:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 18:46:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 18:46:43,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 18:46:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 18:46:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-20 18:46:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-20 18:46:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-20 18:46:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-20 18:46:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-20 18:46:43,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-20 18:46:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-20 18:46:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-20 18:46:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-20 18:46:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-20 18:46:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-20 18:46:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-20 18:46:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-20 18:46:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-20 18:46:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-20 18:46:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-20 18:46:43,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,829 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-20 18:46:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:43,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3892 backedges. 1543 proven. 837 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-20 18:46:43,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:43,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023172069] [2024-09-20 18:46:43,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023172069] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:43,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134767779] [2024-09-20 18:46:43,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:46:43,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:43,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:43,832 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:43,833 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-09-20 18:46:43,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:46:43,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:43,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-09-20 18:46:43,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:44,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3892 backedges. 1728 proven. 756 refuted. 0 times theorem prover too weak. 1408 trivial. 0 not checked. [2024-09-20 18:46:45,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:45,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3892 backedges. 1622 proven. 756 refuted. 0 times theorem prover too weak. 1514 trivial. 0 not checked. [2024-09-20 18:46:45,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134767779] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:45,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:45,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58, 58] total 89 [2024-09-20 18:46:45,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942890221] [2024-09-20 18:46:45,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:45,813 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2024-09-20 18:46:45,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:45,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2024-09-20 18:46:45,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1773, Invalid=6059, Unknown=0, NotChecked=0, Total=7832 [2024-09-20 18:46:45,814 INFO L87 Difference]: Start difference. First operand 266 states and 277 transitions. Second operand has 89 states, 89 states have (on average 2.7752808988764044) internal successors, (247), 89 states have internal predecessors, (247), 58 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (59), 58 states have call predecessors, (59), 58 states have call successors, (59) [2024-09-20 18:46:46,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:46,708 INFO L93 Difference]: Finished difference Result 477 states and 572 transitions. [2024-09-20 18:46:46,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-09-20 18:46:46,708 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.7752808988764044) internal successors, (247), 89 states have internal predecessors, (247), 58 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (59), 58 states have call predecessors, (59), 58 states have call successors, (59) Word has length 295 [2024-09-20 18:46:46,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:46,710 INFO L225 Difference]: With dead ends: 477 [2024-09-20 18:46:46,711 INFO L226 Difference]: Without dead ends: 352 [2024-09-20 18:46:46,712 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 565 SyntacticMatches, 54 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5071 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3399, Invalid=10173, Unknown=0, NotChecked=0, Total=13572 [2024-09-20 18:46:46,712 INFO L434 NwaCegarLoop]: 93 mSDtfsCounter, 210 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:46,712 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 916 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 18:46:46,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2024-09-20 18:46:46,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 268. [2024-09-20 18:46:46,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 214 states have (on average 1.0186915887850467) internal successors, (218), 215 states have internal predecessors, (218), 31 states have call successors, (31), 23 states have call predecessors, (31), 22 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-09-20 18:46:46,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 279 transitions. [2024-09-20 18:46:46,735 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 279 transitions. Word has length 295 [2024-09-20 18:46:46,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:46,735 INFO L474 AbstractCegarLoop]: Abstraction has 268 states and 279 transitions. [2024-09-20 18:46:46,736 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 2.7752808988764044) internal successors, (247), 89 states have internal predecessors, (247), 58 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (59), 58 states have call predecessors, (59), 58 states have call successors, (59) [2024-09-20 18:46:46,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:46,736 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 279 transitions. [2024-09-20 18:46:46,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-09-20 18:46:46,737 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:46,737 INFO L216 NwaCegarLoop]: trace histogram [29, 29, 29, 29, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:46,752 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 18:46:46,937 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-09-20 18:46:46,938 INFO L399 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:46,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:46,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1059375627, now seen corresponding path program 33 times [2024-09-20 18:46:46,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:46,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175814332] [2024-09-20 18:46:46,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:46,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:48,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:48,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:48,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-20 18:46:48,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:48,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 18:46:48,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:48,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 18:46:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:48,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 18:46:48,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:48,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 18:46:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:48,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 18:46:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:48,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 18:46:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:48,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 18:46:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:48,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 18:46:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:48,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-20 18:46:48,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:48,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-20 18:46:48,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:48,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-20 18:46:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:48,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-20 18:46:48,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:48,115 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 18:46:48,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:48,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-20 18:46:48,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:48,117 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-20 18:46:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:48,118 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-20 18:46:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:48,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-20 18:46:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:48,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-20 18:46:48,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:48,120 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-20 18:46:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:48,121 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-20 18:46:48,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:48,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-20 18:46:48,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:48,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-20 18:46:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:48,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-20 18:46:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:48,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-20 18:46:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:48,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-20 18:46:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:48,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-20 18:46:48,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:48,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-20 18:46:48,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:48,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 1543 proven. 893 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-20 18:46:48,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:48,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175814332] [2024-09-20 18:46:48,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175814332] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:48,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016679036] [2024-09-20 18:46:48,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:46:48,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:48,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:48,130 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:48,131 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-09-20 18:46:48,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2024-09-20 18:46:48,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:48,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-09-20 18:46:48,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:49,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 868 proven. 1568 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-20 18:46:49,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:50,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 868 proven. 1568 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-20 18:46:50,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016679036] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:50,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:50,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 33, 33] total 91 [2024-09-20 18:46:50,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925216317] [2024-09-20 18:46:50,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:50,659 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2024-09-20 18:46:50,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:50,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2024-09-20 18:46:50,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1369, Invalid=6821, Unknown=0, NotChecked=0, Total=8190 [2024-09-20 18:46:50,660 INFO L87 Difference]: Start difference. First operand 268 states and 279 transitions. Second operand has 91 states, 91 states have (on average 3.3736263736263736) internal successors, (307), 90 states have internal predecessors, (307), 59 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2024-09-20 18:46:52,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:52,221 INFO L93 Difference]: Finished difference Result 489 states and 588 transitions. [2024-09-20 18:46:52,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2024-09-20 18:46:52,222 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 3.3736263736263736) internal successors, (307), 90 states have internal predecessors, (307), 59 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Word has length 297 [2024-09-20 18:46:52,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:52,224 INFO L225 Difference]: With dead ends: 489 [2024-09-20 18:46:52,224 INFO L226 Difference]: Without dead ends: 366 [2024-09-20 18:46:52,226 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 592 SyntacticMatches, 59 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14177 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=5399, Invalid=26107, Unknown=0, NotChecked=0, Total=31506 [2024-09-20 18:46:52,227 INFO L434 NwaCegarLoop]: 94 mSDtfsCounter, 391 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 1723 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 1969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 1723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:52,227 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 1316 Invalid, 1969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 1723 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-20 18:46:52,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2024-09-20 18:46:52,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 278. [2024-09-20 18:46:52,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 222 states have (on average 1.018018018018018) internal successors, (226), 223 states have internal predecessors, (226), 32 states have call successors, (32), 24 states have call predecessors, (32), 23 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2024-09-20 18:46:52,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 289 transitions. [2024-09-20 18:46:52,250 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 289 transitions. Word has length 297 [2024-09-20 18:46:52,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:52,251 INFO L474 AbstractCegarLoop]: Abstraction has 278 states and 289 transitions. [2024-09-20 18:46:52,251 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 3.3736263736263736) internal successors, (307), 90 states have internal predecessors, (307), 59 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2024-09-20 18:46:52,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:52,251 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 289 transitions. [2024-09-20 18:46:52,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2024-09-20 18:46:52,252 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:52,252 INFO L216 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:52,266 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-09-20 18:46:52,453 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-09-20 18:46:52,453 INFO L399 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:52,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:52,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1902340415, now seen corresponding path program 34 times [2024-09-20 18:46:52,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:52,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872809605] [2024-09-20 18:46:52,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:52,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:52,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:53,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:53,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-20 18:46:53,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:53,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 18:46:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:53,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 18:46:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:53,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 18:46:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:53,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 18:46:53,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:53,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 18:46:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:53,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 18:46:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:53,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-20 18:46:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:53,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-20 18:46:53,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:53,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-20 18:46:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:53,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-20 18:46:53,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:53,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-20 18:46:53,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:53,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-20 18:46:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:53,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-20 18:46:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:53,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-20 18:46:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:53,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-20 18:46:53,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:53,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-20 18:46:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:53,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-20 18:46:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:53,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-20 18:46:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:53,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-20 18:46:53,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:53,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-20 18:46:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:53,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-20 18:46:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:53,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-20 18:46:53,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:53,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-20 18:46:53,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:53,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-20 18:46:53,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:53,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-20 18:46:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:53,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-20 18:46:53,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:53,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-20 18:46:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:53,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-20 18:46:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:53,782 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 1656 proven. 954 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-20 18:46:53,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:53,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872809605] [2024-09-20 18:46:53,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872809605] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:53,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227000024] [2024-09-20 18:46:53,783 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:46:53,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:53,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:53,784 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:53,785 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-09-20 18:46:53,921 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:46:53,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:53,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-09-20 18:46:53,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:46:54,797 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 928 proven. 1682 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-20 18:46:54,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:46:56,417 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 928 proven. 1682 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-20 18:46:56,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227000024] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:46:56,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:46:56,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 34, 34] total 94 [2024-09-20 18:46:56,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053188025] [2024-09-20 18:46:56,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:46:56,418 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2024-09-20 18:46:56,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:46:56,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2024-09-20 18:46:56,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1461, Invalid=7281, Unknown=0, NotChecked=0, Total=8742 [2024-09-20 18:46:56,420 INFO L87 Difference]: Start difference. First operand 278 states and 289 transitions. Second operand has 94 states, 94 states have (on average 3.372340425531915) internal successors, (317), 93 states have internal predecessors, (317), 61 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2024-09-20 18:46:58,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:46:58,088 INFO L93 Difference]: Finished difference Result 506 states and 608 transitions. [2024-09-20 18:46:58,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2024-09-20 18:46:58,089 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 3.372340425531915) internal successors, (317), 93 states have internal predecessors, (317), 61 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) Word has length 307 [2024-09-20 18:46:58,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:46:58,091 INFO L225 Difference]: With dead ends: 506 [2024-09-20 18:46:58,091 INFO L226 Difference]: Without dead ends: 379 [2024-09-20 18:46:58,093 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 855 GetRequests, 612 SyntacticMatches, 61 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15191 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=5765, Invalid=27907, Unknown=0, NotChecked=0, Total=33672 [2024-09-20 18:46:58,094 INFO L434 NwaCegarLoop]: 97 mSDtfsCounter, 349 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 1763 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 1977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 1763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-20 18:46:58,094 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 1402 Invalid, 1977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 1763 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-20 18:46:58,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-09-20 18:46:58,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 288. [2024-09-20 18:46:58,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 230 states have (on average 1.017391304347826) internal successors, (234), 231 states have internal predecessors, (234), 33 states have call successors, (33), 25 states have call predecessors, (33), 24 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-20 18:46:58,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 299 transitions. [2024-09-20 18:46:58,119 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 299 transitions. Word has length 307 [2024-09-20 18:46:58,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:46:58,119 INFO L474 AbstractCegarLoop]: Abstraction has 288 states and 299 transitions. [2024-09-20 18:46:58,119 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 3.372340425531915) internal successors, (317), 93 states have internal predecessors, (317), 61 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2024-09-20 18:46:58,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:58,119 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 299 transitions. [2024-09-20 18:46:58,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-09-20 18:46:58,120 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:46:58,121 INFO L216 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:46:58,134 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 18:46:58,321 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-09-20 18:46:58,322 INFO L399 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:46:58,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:46:58,322 INFO L85 PathProgramCache]: Analyzing trace with hash 2081266487, now seen corresponding path program 35 times [2024-09-20 18:46:58,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:46:58,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968653536] [2024-09-20 18:46:58,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:46:58,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:46:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:46:59,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-20 18:46:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 18:46:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 18:46:59,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 18:46:59,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 18:46:59,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 18:46:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 18:46:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-20 18:46:59,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-20 18:46:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-20 18:46:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 18:46:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-20 18:46:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-20 18:46:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-20 18:46:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-20 18:46:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-20 18:46:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-20 18:46:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-20 18:46:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-20 18:46:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-20 18:46:59,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-20 18:46:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-20 18:46:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-20 18:46:59,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-20 18:46:59,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-20 18:46:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-20 18:46:59,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-20 18:46:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-20 18:46:59,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-20 18:46:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-20 18:46:59,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:46:59,686 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 1773 proven. 1017 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-20 18:46:59,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:46:59,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968653536] [2024-09-20 18:46:59,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968653536] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:46:59,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444700897] [2024-09-20 18:46:59,686 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:46:59,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:46:59,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:46:59,688 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:46:59,690 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-09-20 18:46:59,867 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2024-09-20 18:46:59,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:46:59,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-09-20 18:46:59,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:01,141 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 1860 proven. 930 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-20 18:47:01,141 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:02,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 1860 proven. 930 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-20 18:47:02,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444700897] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:02,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:02,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 97 [2024-09-20 18:47:02,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122679355] [2024-09-20 18:47:02,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:02,141 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-09-20 18:47:02,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:02,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-09-20 18:47:02,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2115, Invalid=7197, Unknown=0, NotChecked=0, Total=9312 [2024-09-20 18:47:02,142 INFO L87 Difference]: Start difference. First operand 288 states and 299 transitions. Second operand has 97 states, 97 states have (on average 2.711340206185567) internal successors, (263), 97 states have internal predecessors, (263), 63 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-09-20 18:47:03,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:03,188 INFO L93 Difference]: Finished difference Result 514 states and 618 transitions. [2024-09-20 18:47:03,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-09-20 18:47:03,189 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.711340206185567) internal successors, (263), 97 states have internal predecessors, (263), 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 317 [2024-09-20 18:47:03,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:03,190 INFO L225 Difference]: With dead ends: 514 [2024-09-20 18:47:03,191 INFO L226 Difference]: Without dead ends: 383 [2024-09-20 18:47:03,192 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 790 GetRequests, 604 SyntacticMatches, 60 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6052 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4101, Invalid=12155, Unknown=0, NotChecked=0, Total=16256 [2024-09-20 18:47:03,192 INFO L434 NwaCegarLoop]: 102 mSDtfsCounter, 300 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:03,192 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 916 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 18:47:03,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2024-09-20 18:47:03,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 290. [2024-09-20 18:47:03,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 232 states have (on average 1.0172413793103448) internal successors, (236), 233 states have internal predecessors, (236), 33 states have call successors, (33), 25 states have call predecessors, (33), 24 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-20 18:47:03,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 301 transitions. [2024-09-20 18:47:03,219 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 301 transitions. Word has length 317 [2024-09-20 18:47:03,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:03,219 INFO L474 AbstractCegarLoop]: Abstraction has 290 states and 301 transitions. [2024-09-20 18:47:03,219 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.711340206185567) internal successors, (263), 97 states have internal predecessors, (263), 63 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-09-20 18:47:03,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:03,219 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 301 transitions. [2024-09-20 18:47:03,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2024-09-20 18:47:03,221 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:03,221 INFO L216 NwaCegarLoop]: trace histogram [32, 31, 31, 31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:03,233 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-09-20 18:47:03,423 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-09-20 18:47:03,424 INFO L399 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:03,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:03,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1371323012, now seen corresponding path program 36 times [2024-09-20 18:47:03,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:03,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912248074] [2024-09-20 18:47:03,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:03,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:03,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 18:47:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:47:04,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 18:47:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 18:47:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 18:47:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 18:47:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 18:47:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 18:47:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 18:47:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 18:47:04,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-20 18:47:04,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-20 18:47:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-20 18:47:04,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-20 18:47:04,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-20 18:47:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-20 18:47:04,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-20 18:47:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-20 18:47:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-20 18:47:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-20 18:47:04,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-20 18:47:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-20 18:47:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-20 18:47:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-20 18:47:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-20 18:47:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-20 18:47:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-20 18:47:04,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-20 18:47:04,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,331 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-20 18:47:04,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-20 18:47:04,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:04,333 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 990 proven. 1862 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-20 18:47:04,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:04,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912248074] [2024-09-20 18:47:04,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912248074] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:04,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050899458] [2024-09-20 18:47:04,333 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:47:04,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:04,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:04,335 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:04,335 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-09-20 18:47:04,487 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2024-09-20 18:47:04,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:04,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 875 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-09-20 18:47:04,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:04,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 1052 proven. 1800 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-20 18:47:04,664 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:05,400 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 1052 proven. 1800 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-20 18:47:05,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050899458] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:05,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:05,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 40 [2024-09-20 18:47:05,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727473974] [2024-09-20 18:47:05,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:05,401 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-20 18:47:05,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:05,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-20 18:47:05,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=609, Invalid=951, Unknown=0, NotChecked=0, Total=1560 [2024-09-20 18:47:05,402 INFO L87 Difference]: Start difference. First operand 290 states and 301 transitions. Second operand has 40 states, 40 states have (on average 4.725) internal successors, (189), 38 states have internal predecessors, (189), 33 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-20 18:47:05,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:05,591 INFO L93 Difference]: Finished difference Result 309 states and 322 transitions. [2024-09-20 18:47:05,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-20 18:47:05,591 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.725) internal successors, (189), 38 states have internal predecessors, (189), 33 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 319 [2024-09-20 18:47:05,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:05,593 INFO L225 Difference]: With dead ends: 309 [2024-09-20 18:47:05,593 INFO L226 Difference]: Without dead ends: 307 [2024-09-20 18:47:05,594 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 766 GetRequests, 664 SyntacticMatches, 63 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1510 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=615, Invalid=1025, Unknown=0, NotChecked=0, Total=1640 [2024-09-20 18:47:05,594 INFO L434 NwaCegarLoop]: 50 mSDtfsCounter, 12 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:05,594 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 490 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:47:05,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-09-20 18:47:05,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 302. [2024-09-20 18:47:05,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 241 states have (on average 1.016597510373444) internal successors, (245), 242 states have internal predecessors, (245), 35 states have call successors, (35), 26 states have call predecessors, (35), 25 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-20 18:47:05,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 314 transitions. [2024-09-20 18:47:05,620 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 314 transitions. Word has length 319 [2024-09-20 18:47:05,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:05,621 INFO L474 AbstractCegarLoop]: Abstraction has 302 states and 314 transitions. [2024-09-20 18:47:05,621 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 4.725) internal successors, (189), 38 states have internal predecessors, (189), 33 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-09-20 18:47:05,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:05,621 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 314 transitions. [2024-09-20 18:47:05,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2024-09-20 18:47:05,622 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:05,622 INFO L216 NwaCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 32, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:05,636 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 18:47:05,823 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-09-20 18:47:05,824 INFO L399 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:05,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:05,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1624508510, now seen corresponding path program 37 times [2024-09-20 18:47:05,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:05,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560277715] [2024-09-20 18:47:05,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:05,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:07,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-20 18:47:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:47:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 18:47:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 18:47:07,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 18:47:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 18:47:07,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 18:47:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 18:47:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 18:47:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 18:47:07,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-20 18:47:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-20 18:47:07,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-20 18:47:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-20 18:47:07,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-20 18:47:07,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-20 18:47:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-20 18:47:07,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-20 18:47:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-20 18:47:07,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-20 18:47:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-20 18:47:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-20 18:47:07,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-20 18:47:07,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-20 18:47:07,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-20 18:47:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-20 18:47:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-20 18:47:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-20 18:47:07,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-20 18:47:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-20 18:47:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-20 18:47:07,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-20 18:47:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,302 INFO L134 CoverageAnalysis]: Checked inductivity of 5088 backedges. 2019 proven. 1085 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-20 18:47:07,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:07,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560277715] [2024-09-20 18:47:07,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560277715] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:07,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870540985] [2024-09-20 18:47:07,302 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:47:07,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:07,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:07,304 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:07,304 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-09-20 18:47:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:07,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 909 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-09-20 18:47:07,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:08,707 INFO L134 CoverageAnalysis]: Checked inductivity of 5088 backedges. 2232 proven. 992 refuted. 0 times theorem prover too weak. 1864 trivial. 0 not checked. [2024-09-20 18:47:08,707 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:09,727 INFO L134 CoverageAnalysis]: Checked inductivity of 5088 backedges. 2110 proven. 992 refuted. 0 times theorem prover too weak. 1986 trivial. 0 not checked. [2024-09-20 18:47:09,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870540985] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:09,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:09,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66, 66] total 101 [2024-09-20 18:47:09,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630228427] [2024-09-20 18:47:09,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:09,728 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2024-09-20 18:47:09,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:09,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2024-09-20 18:47:09,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2281, Invalid=7819, Unknown=0, NotChecked=0, Total=10100 [2024-09-20 18:47:09,729 INFO L87 Difference]: Start difference. First operand 302 states and 314 transitions. Second operand has 101 states, 101 states have (on average 2.762376237623762) internal successors, (279), 101 states have internal predecessors, (279), 66 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (67), 66 states have call predecessors, (67), 66 states have call successors, (67) [2024-09-20 18:47:10,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:10,824 INFO L93 Difference]: Finished difference Result 541 states and 649 transitions. [2024-09-20 18:47:10,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-09-20 18:47:10,824 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.762376237623762) internal successors, (279), 101 states have internal predecessors, (279), 66 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (67), 66 states have call predecessors, (67), 66 states have call successors, (67) Word has length 335 [2024-09-20 18:47:10,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:10,826 INFO L225 Difference]: With dead ends: 541 [2024-09-20 18:47:10,826 INFO L226 Difference]: Without dead ends: 400 [2024-09-20 18:47:10,828 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 641 SyntacticMatches, 62 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6567 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4395, Invalid=13161, Unknown=0, NotChecked=0, Total=17556 [2024-09-20 18:47:10,828 INFO L434 NwaCegarLoop]: 105 mSDtfsCounter, 220 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:10,828 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 937 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 18:47:10,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2024-09-20 18:47:10,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 304. [2024-09-20 18:47:10,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 243 states have (on average 1.0164609053497942) internal successors, (247), 244 states have internal predecessors, (247), 35 states have call successors, (35), 26 states have call predecessors, (35), 25 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2024-09-20 18:47:10,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 316 transitions. [2024-09-20 18:47:10,855 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 316 transitions. Word has length 335 [2024-09-20 18:47:10,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:10,855 INFO L474 AbstractCegarLoop]: Abstraction has 304 states and 316 transitions. [2024-09-20 18:47:10,855 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.762376237623762) internal successors, (279), 101 states have internal predecessors, (279), 66 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (67), 66 states have call predecessors, (67), 66 states have call successors, (67) [2024-09-20 18:47:10,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:10,856 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 316 transitions. [2024-09-20 18:47:10,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2024-09-20 18:47:10,857 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:10,857 INFO L216 NwaCegarLoop]: trace histogram [33, 33, 33, 33, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:10,870 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-09-20 18:47:11,057 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-09-20 18:47:11,058 INFO L399 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:11,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:11,058 INFO L85 PathProgramCache]: Analyzing trace with hash -476083357, now seen corresponding path program 38 times [2024-09-20 18:47:11,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:11,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629121003] [2024-09-20 18:47:11,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:11,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:11,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:12,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:12,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-20 18:47:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:12,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 18:47:12,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:12,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 18:47:12,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:12,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 18:47:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:12,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 18:47:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:12,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 18:47:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:12,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 18:47:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:12,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 18:47:12,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:12,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-20 18:47:12,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:12,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-20 18:47:12,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:12,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-20 18:47:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:12,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-20 18:47:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:12,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 18:47:12,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:12,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-20 18:47:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:12,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-20 18:47:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:12,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-20 18:47:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:12,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-20 18:47:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:12,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-20 18:47:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:12,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-20 18:47:12,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:12,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-20 18:47:12,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:12,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-20 18:47:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:12,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-20 18:47:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:12,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-20 18:47:12,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:12,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-20 18:47:12,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:12,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-20 18:47:12,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:12,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-20 18:47:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:12,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-20 18:47:12,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:12,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-20 18:47:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:12,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-20 18:47:12,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:12,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-20 18:47:12,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:12,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-20 18:47:12,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:12,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-20 18:47:12,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:12,778 INFO L134 CoverageAnalysis]: Checked inductivity of 5152 backedges. 2019 proven. 1149 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-20 18:47:12,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:12,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629121003] [2024-09-20 18:47:12,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629121003] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:12,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179425390] [2024-09-20 18:47:12,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:47:12,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:12,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:12,780 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:12,781 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-09-20 18:47:12,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:47:12,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:12,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-09-20 18:47:12,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:14,018 INFO L134 CoverageAnalysis]: Checked inductivity of 5152 backedges. 1120 proven. 2048 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-20 18:47:14,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:15,902 INFO L134 CoverageAnalysis]: Checked inductivity of 5152 backedges. 1120 proven. 2048 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-20 18:47:15,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179425390] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:15,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:15,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 37, 37] total 103 [2024-09-20 18:47:15,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075441825] [2024-09-20 18:47:15,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:15,903 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2024-09-20 18:47:15,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:15,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2024-09-20 18:47:15,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1755, Invalid=8751, Unknown=0, NotChecked=0, Total=10506 [2024-09-20 18:47:15,904 INFO L87 Difference]: Start difference. First operand 304 states and 316 transitions. Second operand has 103 states, 103 states have (on average 3.3689320388349513) internal successors, (347), 102 states have internal predecessors, (347), 67 states have call successors, (68), 3 states have call predecessors, (68), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2024-09-20 18:47:17,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:17,943 INFO L93 Difference]: Finished difference Result 553 states and 665 transitions. [2024-09-20 18:47:17,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2024-09-20 18:47:17,944 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 3.3689320388349513) internal successors, (347), 102 states have internal predecessors, (347), 67 states have call successors, (68), 3 states have call predecessors, (68), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) Word has length 337 [2024-09-20 18:47:17,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:17,946 INFO L225 Difference]: With dead ends: 553 [2024-09-20 18:47:17,946 INFO L226 Difference]: Without dead ends: 414 [2024-09-20 18:47:17,948 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 939 GetRequests, 672 SyntacticMatches, 67 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18443 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=6935, Invalid=33667, Unknown=0, NotChecked=0, Total=40602 [2024-09-20 18:47:17,948 INFO L434 NwaCegarLoop]: 106 mSDtfsCounter, 509 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 1957 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 2286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 1957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:17,949 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 1475 Invalid, 2286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 1957 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-20 18:47:17,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-09-20 18:47:17,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 314. [2024-09-20 18:47:17,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 251 states have (on average 1.0159362549800797) internal successors, (255), 252 states have internal predecessors, (255), 36 states have call successors, (36), 27 states have call predecessors, (36), 26 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2024-09-20 18:47:17,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 326 transitions. [2024-09-20 18:47:17,976 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 326 transitions. Word has length 337 [2024-09-20 18:47:17,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:17,976 INFO L474 AbstractCegarLoop]: Abstraction has 314 states and 326 transitions. [2024-09-20 18:47:17,977 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 3.3689320388349513) internal successors, (347), 102 states have internal predecessors, (347), 67 states have call successors, (68), 3 states have call predecessors, (68), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2024-09-20 18:47:17,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:17,977 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 326 transitions. [2024-09-20 18:47:17,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2024-09-20 18:47:17,978 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:17,978 INFO L216 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:17,991 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-09-20 18:47:18,179 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,39 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:18,179 INFO L399 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:18,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:18,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1552902375, now seen corresponding path program 39 times [2024-09-20 18:47:18,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:18,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214880359] [2024-09-20 18:47:18,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:18,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:19,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-20 18:47:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 18:47:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 18:47:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 18:47:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 18:47:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 18:47:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-20 18:47:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-20 18:47:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-20 18:47:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-20 18:47:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-20 18:47:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-20 18:47:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-20 18:47:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-20 18:47:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-20 18:47:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-20 18:47:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-20 18:47:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-20 18:47:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-20 18:47:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-20 18:47:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-20 18:47:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-20 18:47:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-20 18:47:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-20 18:47:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-20 18:47:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-20 18:47:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-20 18:47:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-20 18:47:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-20 18:47:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-20 18:47:19,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-20 18:47:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2024-09-20 18:47:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-09-20 18:47:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:19,913 INFO L134 CoverageAnalysis]: Checked inductivity of 5478 backedges. 2148 proven. 1218 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-20 18:47:19,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:19,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214880359] [2024-09-20 18:47:19,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214880359] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:19,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791001881] [2024-09-20 18:47:19,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:47:19,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:19,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:19,915 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:19,916 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-09-20 18:47:20,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2024-09-20 18:47:20,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:20,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-09-20 18:47:20,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:21,292 INFO L134 CoverageAnalysis]: Checked inductivity of 5478 backedges. 1188 proven. 2178 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-20 18:47:21,292 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:23,309 INFO L134 CoverageAnalysis]: Checked inductivity of 5478 backedges. 1188 proven. 2178 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-20 18:47:23,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791001881] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:23,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:23,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 38, 38] total 106 [2024-09-20 18:47:23,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9838796] [2024-09-20 18:47:23,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:23,310 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2024-09-20 18:47:23,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:23,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2024-09-20 18:47:23,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1859, Invalid=9271, Unknown=0, NotChecked=0, Total=11130 [2024-09-20 18:47:23,311 INFO L87 Difference]: Start difference. First operand 314 states and 326 transitions. Second operand has 106 states, 106 states have (on average 3.3679245283018866) internal successors, (357), 105 states have internal predecessors, (357), 69 states have call successors, (70), 3 states have call predecessors, (70), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2024-09-20 18:47:25,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:25,508 INFO L93 Difference]: Finished difference Result 570 states and 685 transitions. [2024-09-20 18:47:25,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2024-09-20 18:47:25,508 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 3.3679245283018866) internal successors, (357), 105 states have internal predecessors, (357), 69 states have call successors, (70), 3 states have call predecessors, (70), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) Word has length 347 [2024-09-20 18:47:25,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:25,511 INFO L225 Difference]: With dead ends: 570 [2024-09-20 18:47:25,511 INFO L226 Difference]: Without dead ends: 427 [2024-09-20 18:47:25,514 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 967 GetRequests, 692 SyntacticMatches, 69 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19597 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=7349, Invalid=35707, Unknown=0, NotChecked=0, Total=43056 [2024-09-20 18:47:25,515 INFO L434 NwaCegarLoop]: 109 mSDtfsCounter, 567 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 2000 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 2375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 2000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:25,515 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 1580 Invalid, 2375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 2000 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-20 18:47:25,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2024-09-20 18:47:25,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 324. [2024-09-20 18:47:25,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 259 states have (on average 1.0154440154440154) internal successors, (263), 260 states have internal predecessors, (263), 37 states have call successors, (37), 28 states have call predecessors, (37), 27 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-09-20 18:47:25,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 336 transitions. [2024-09-20 18:47:25,546 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 336 transitions. Word has length 347 [2024-09-20 18:47:25,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:25,546 INFO L474 AbstractCegarLoop]: Abstraction has 324 states and 336 transitions. [2024-09-20 18:47:25,547 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 3.3679245283018866) internal successors, (357), 105 states have internal predecessors, (357), 69 states have call successors, (70), 3 states have call predecessors, (70), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2024-09-20 18:47:25,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:25,547 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 336 transitions. [2024-09-20 18:47:25,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2024-09-20 18:47:25,548 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:25,548 INFO L216 NwaCegarLoop]: trace histogram [35, 35, 35, 35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:25,562 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-09-20 18:47:25,748 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,40 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:25,750 INFO L399 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:25,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:25,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1587223183, now seen corresponding path program 40 times [2024-09-20 18:47:25,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:25,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228471250] [2024-09-20 18:47:25,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:25,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-20 18:47:27,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 18:47:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 18:47:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 18:47:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 18:47:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 18:47:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-20 18:47:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-20 18:47:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-20 18:47:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 18:47:27,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-20 18:47:27,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-20 18:47:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-20 18:47:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-20 18:47:27,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-20 18:47:27,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-20 18:47:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-20 18:47:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-20 18:47:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-20 18:47:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-20 18:47:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-20 18:47:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-20 18:47:27,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-20 18:47:27,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-20 18:47:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-20 18:47:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-20 18:47:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-20 18:47:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-20 18:47:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-20 18:47:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-20 18:47:27,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-20 18:47:27,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-20 18:47:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-20 18:47:27,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-20 18:47:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:27,528 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2281 proven. 1289 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-20 18:47:27,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:27,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228471250] [2024-09-20 18:47:27,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228471250] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:27,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191667410] [2024-09-20 18:47:27,528 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:47:27,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:27,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:27,529 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:27,530 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-09-20 18:47:27,673 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:47:27,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:27,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-09-20 18:47:27,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:28,892 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 1258 proven. 2312 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-20 18:47:28,892 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:30,999 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 1258 proven. 2312 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-20 18:47:30,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191667410] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:30,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:30,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 39, 39] total 109 [2024-09-20 18:47:31,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628941072] [2024-09-20 18:47:31,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:31,000 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2024-09-20 18:47:31,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:31,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2024-09-20 18:47:31,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1966, Invalid=9806, Unknown=0, NotChecked=0, Total=11772 [2024-09-20 18:47:31,002 INFO L87 Difference]: Start difference. First operand 324 states and 336 transitions. Second operand has 109 states, 109 states have (on average 3.36697247706422) internal successors, (367), 108 states have internal predecessors, (367), 71 states have call successors, (72), 3 states have call predecessors, (72), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2024-09-20 18:47:33,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:33,265 INFO L93 Difference]: Finished difference Result 587 states and 705 transitions. [2024-09-20 18:47:33,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2024-09-20 18:47:33,265 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 3.36697247706422) internal successors, (367), 108 states have internal predecessors, (367), 71 states have call successors, (72), 3 states have call predecessors, (72), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) Word has length 357 [2024-09-20 18:47:33,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:33,268 INFO L225 Difference]: With dead ends: 587 [2024-09-20 18:47:33,268 INFO L226 Difference]: Without dead ends: 440 [2024-09-20 18:47:33,270 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 995 GetRequests, 712 SyntacticMatches, 71 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20786 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=7775, Invalid=37807, Unknown=0, NotChecked=0, Total=45582 [2024-09-20 18:47:33,270 INFO L434 NwaCegarLoop]: 112 mSDtfsCounter, 619 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 1851 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 2260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 1851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:33,270 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [620 Valid, 1527 Invalid, 2260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 1851 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-20 18:47:33,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2024-09-20 18:47:33,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 334. [2024-09-20 18:47:33,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 267 states have (on average 1.0149812734082397) internal successors, (271), 268 states have internal predecessors, (271), 38 states have call successors, (38), 29 states have call predecessors, (38), 28 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-20 18:47:33,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 346 transitions. [2024-09-20 18:47:33,302 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 346 transitions. Word has length 357 [2024-09-20 18:47:33,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:33,302 INFO L474 AbstractCegarLoop]: Abstraction has 334 states and 346 transitions. [2024-09-20 18:47:33,302 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 3.36697247706422) internal successors, (367), 108 states have internal predecessors, (367), 71 states have call successors, (72), 3 states have call predecessors, (72), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2024-09-20 18:47:33,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:33,303 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 346 transitions. [2024-09-20 18:47:33,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2024-09-20 18:47:33,304 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:33,304 INFO L216 NwaCegarLoop]: trace histogram [36, 36, 36, 36, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:33,318 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-09-20 18:47:33,505 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-09-20 18:47:33,505 INFO L399 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:33,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:33,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1287988677, now seen corresponding path program 41 times [2024-09-20 18:47:33,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:33,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629918729] [2024-09-20 18:47:33,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:33,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:33,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,341 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-20 18:47:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,342 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-20 18:47:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,343 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 18:47:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,344 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 18:47:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 18:47:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,345 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 18:47:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,346 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 18:47:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,347 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 18:47:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 18:47:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,349 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-20 18:47:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-20 18:47:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-20 18:47:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-20 18:47:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,352 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-20 18:47:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,353 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-20 18:47:35,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,354 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-20 18:47:35,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-20 18:47:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,356 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-20 18:47:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-20 18:47:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-20 18:47:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,358 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-20 18:47:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-20 18:47:35,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,360 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-20 18:47:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,361 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-20 18:47:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-20 18:47:35,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,363 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-20 18:47:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,364 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-20 18:47:35,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-20 18:47:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-20 18:47:35,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-20 18:47:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-20 18:47:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-20 18:47:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-20 18:47:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-09-20 18:47:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-09-20 18:47:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:35,372 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2418 proven. 1362 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-20 18:47:35,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:35,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629918729] [2024-09-20 18:47:35,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629918729] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:35,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177975291] [2024-09-20 18:47:35,373 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:47:35,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:35,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:35,377 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:35,379 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-09-20 18:47:35,565 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2024-09-20 18:47:35,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:35,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 1000 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-09-20 18:47:35,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:37,126 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2520 proven. 1260 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-20 18:47:37,126 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:38,385 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2520 proven. 1260 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-20 18:47:38,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177975291] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:38,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:38,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74, 74] total 112 [2024-09-20 18:47:38,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086420058] [2024-09-20 18:47:38,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:38,386 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2024-09-20 18:47:38,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:38,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2024-09-20 18:47:38,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2815, Invalid=9617, Unknown=0, NotChecked=0, Total=12432 [2024-09-20 18:47:38,387 INFO L87 Difference]: Start difference. First operand 334 states and 346 transitions. Second operand has 112 states, 112 states have (on average 2.705357142857143) internal successors, (303), 112 states have internal predecessors, (303), 73 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-09-20 18:47:39,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:39,794 INFO L93 Difference]: Finished difference Result 595 states and 715 transitions. [2024-09-20 18:47:39,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-09-20 18:47:39,794 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 2.705357142857143) internal successors, (303), 112 states have internal predecessors, (303), 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 367 [2024-09-20 18:47:39,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:39,797 INFO L225 Difference]: With dead ends: 595 [2024-09-20 18:47:39,797 INFO L226 Difference]: Without dead ends: 444 [2024-09-20 18:47:39,799 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 915 GetRequests, 699 SyntacticMatches, 70 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8112 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=5481, Invalid=16275, Unknown=0, NotChecked=0, Total=21756 [2024-09-20 18:47:39,799 INFO L434 NwaCegarLoop]: 117 mSDtfsCounter, 344 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:39,799 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 772 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 18:47:39,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2024-09-20 18:47:39,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 336. [2024-09-20 18:47:39,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 269 states have (on average 1.0148698884758365) internal successors, (273), 270 states have internal predecessors, (273), 38 states have call successors, (38), 29 states have call predecessors, (38), 28 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-20 18:47:39,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 348 transitions. [2024-09-20 18:47:39,832 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 348 transitions. Word has length 367 [2024-09-20 18:47:39,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:39,832 INFO L474 AbstractCegarLoop]: Abstraction has 336 states and 348 transitions. [2024-09-20 18:47:39,832 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 112 states have (on average 2.705357142857143) internal successors, (303), 112 states have internal predecessors, (303), 73 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-09-20 18:47:39,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:39,833 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 348 transitions. [2024-09-20 18:47:39,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2024-09-20 18:47:39,834 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:39,834 INFO L216 NwaCegarLoop]: trace histogram [37, 36, 36, 36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:39,847 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2024-09-20 18:47:40,034 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:40,035 INFO L399 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:40,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:40,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1107602230, now seen corresponding path program 42 times [2024-09-20 18:47:40,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:40,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503448201] [2024-09-20 18:47:40,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:40,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 18:47:41,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 18:47:41,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 18:47:41,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 18:47:41,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 18:47:41,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 18:47:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 18:47:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-20 18:47:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-20 18:47:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-20 18:47:41,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-20 18:47:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 18:47:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-20 18:47:41,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-20 18:47:41,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-20 18:47:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-20 18:47:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-20 18:47:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-20 18:47:41,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-20 18:47:41,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-20 18:47:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-20 18:47:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-20 18:47:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-20 18:47:41,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-20 18:47:41,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-20 18:47:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-20 18:47:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-20 18:47:41,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-20 18:47:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-20 18:47:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-20 18:47:41,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-20 18:47:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-20 18:47:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-20 18:47:41,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-20 18:47:41,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-20 18:47:41,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:41,294 INFO L134 CoverageAnalysis]: Checked inductivity of 6232 backedges. 1330 proven. 2522 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-20 18:47:41,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:41,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503448201] [2024-09-20 18:47:41,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503448201] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:41,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884200710] [2024-09-20 18:47:41,295 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:47:41,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:41,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:41,296 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:41,297 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-09-20 18:47:41,482 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2024-09-20 18:47:41,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:41,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-09-20 18:47:41,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:41,675 INFO L134 CoverageAnalysis]: Checked inductivity of 6232 backedges. 1402 proven. 2450 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-20 18:47:41,675 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:42,559 INFO L134 CoverageAnalysis]: Checked inductivity of 6232 backedges. 1402 proven. 2450 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-20 18:47:42,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884200710] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:42,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:42,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 45 [2024-09-20 18:47:42,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881451191] [2024-09-20 18:47:42,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:42,561 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-20 18:47:42,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:42,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-20 18:47:42,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=794, Invalid=1186, Unknown=0, NotChecked=0, Total=1980 [2024-09-20 18:47:42,561 INFO L87 Difference]: Start difference. First operand 336 states and 348 transitions. Second operand has 45 states, 45 states have (on average 4.7555555555555555) internal successors, (214), 43 states have internal predecessors, (214), 38 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-20 18:47:42,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:42,751 INFO L93 Difference]: Finished difference Result 355 states and 369 transitions. [2024-09-20 18:47:42,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-20 18:47:42,751 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 4.7555555555555555) internal successors, (214), 43 states have internal predecessors, (214), 38 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 369 [2024-09-20 18:47:42,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:42,753 INFO L225 Difference]: With dead ends: 355 [2024-09-20 18:47:42,753 INFO L226 Difference]: Without dead ends: 353 [2024-09-20 18:47:42,754 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 886 GetRequests, 769 SyntacticMatches, 73 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1935 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=800, Invalid=1270, Unknown=0, NotChecked=0, Total=2070 [2024-09-20 18:47:42,754 INFO L434 NwaCegarLoop]: 55 mSDtfsCounter, 12 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:42,754 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 472 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 18:47:42,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2024-09-20 18:47:42,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 348. [2024-09-20 18:47:42,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 278 states have (on average 1.014388489208633) internal successors, (282), 279 states have internal predecessors, (282), 40 states have call successors, (40), 30 states have call predecessors, (40), 29 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-20 18:47:42,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 361 transitions. [2024-09-20 18:47:42,788 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 361 transitions. Word has length 369 [2024-09-20 18:47:42,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:42,788 INFO L474 AbstractCegarLoop]: Abstraction has 348 states and 361 transitions. [2024-09-20 18:47:42,788 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 4.7555555555555555) internal successors, (214), 43 states have internal predecessors, (214), 38 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-09-20 18:47:42,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:42,789 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 361 transitions. [2024-09-20 18:47:42,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2024-09-20 18:47:42,790 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:42,790 INFO L216 NwaCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 37, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:42,806 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-09-20 18:47:42,990 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:42,991 INFO L399 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:42,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:42,991 INFO L85 PathProgramCache]: Analyzing trace with hash -2008040532, now seen corresponding path program 43 times [2024-09-20 18:47:42,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:42,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407074480] [2024-09-20 18:47:42,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:42,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:44,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-20 18:47:44,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 18:47:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 18:47:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 18:47:44,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 18:47:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 18:47:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 18:47:44,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-20 18:47:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-20 18:47:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-20 18:47:44,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-20 18:47:44,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 18:47:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-20 18:47:44,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-20 18:47:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-20 18:47:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-20 18:47:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-20 18:47:44,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-20 18:47:44,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-20 18:47:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-20 18:47:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-20 18:47:44,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-20 18:47:44,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-20 18:47:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-20 18:47:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-20 18:47:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-20 18:47:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-20 18:47:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-20 18:47:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-20 18:47:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-20 18:47:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-20 18:47:44,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-20 18:47:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-20 18:47:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-20 18:47:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-20 18:47:44,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2024-09-20 18:47:44,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2024-09-20 18:47:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:44,977 INFO L134 CoverageAnalysis]: Checked inductivity of 6808 backedges. 2704 proven. 1440 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-20 18:47:44,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:44,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407074480] [2024-09-20 18:47:44,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407074480] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:44,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906303687] [2024-09-20 18:47:44,977 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:47:44,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:44,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:44,979 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:44,979 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-09-20 18:47:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:45,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 1044 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-09-20 18:47:45,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:46,787 INFO L134 CoverageAnalysis]: Checked inductivity of 6808 backedges. 2952 proven. 1332 refuted. 0 times theorem prover too weak. 2524 trivial. 0 not checked. [2024-09-20 18:47:46,787 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:48,162 INFO L134 CoverageAnalysis]: Checked inductivity of 6808 backedges. 2810 proven. 1332 refuted. 0 times theorem prover too weak. 2666 trivial. 0 not checked. [2024-09-20 18:47:48,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906303687] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:48,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:48,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 76, 76] total 116 [2024-09-20 18:47:48,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589082647] [2024-09-20 18:47:48,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:48,163 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2024-09-20 18:47:48,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:48,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2024-09-20 18:47:48,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3006, Invalid=10334, Unknown=0, NotChecked=0, Total=13340 [2024-09-20 18:47:48,165 INFO L87 Difference]: Start difference. First operand 348 states and 361 transitions. Second operand has 116 states, 116 states have (on average 2.75) internal successors, (319), 116 states have internal predecessors, (319), 76 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (77), 76 states have call predecessors, (77), 76 states have call successors, (77) [2024-09-20 18:47:49,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:49,624 INFO L93 Difference]: Finished difference Result 622 states and 746 transitions. [2024-09-20 18:47:49,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-09-20 18:47:49,624 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 2.75) internal successors, (319), 116 states have internal predecessors, (319), 76 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (77), 76 states have call predecessors, (77), 76 states have call successors, (77) Word has length 385 [2024-09-20 18:47:49,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:49,627 INFO L225 Difference]: With dead ends: 622 [2024-09-20 18:47:49,627 INFO L226 Difference]: Without dead ends: 461 [2024-09-20 18:47:49,629 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 959 GetRequests, 736 SyntacticMatches, 72 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8707 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=5820, Invalid=17436, Unknown=0, NotChecked=0, Total=23256 [2024-09-20 18:47:49,629 INFO L434 NwaCegarLoop]: 120 mSDtfsCounter, 270 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 1350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:49,630 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 875 Invalid, 1350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 18:47:49,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2024-09-20 18:47:49,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 350. [2024-09-20 18:47:49,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 280 states have (on average 1.0142857142857142) internal successors, (284), 281 states have internal predecessors, (284), 40 states have call successors, (40), 30 states have call predecessors, (40), 29 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-20 18:47:49,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 363 transitions. [2024-09-20 18:47:49,665 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 363 transitions. Word has length 385 [2024-09-20 18:47:49,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:49,665 INFO L474 AbstractCegarLoop]: Abstraction has 350 states and 363 transitions. [2024-09-20 18:47:49,666 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 2.75) internal successors, (319), 116 states have internal predecessors, (319), 76 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (77), 76 states have call predecessors, (77), 76 states have call successors, (77) [2024-09-20 18:47:49,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:49,666 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 363 transitions. [2024-09-20 18:47:49,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2024-09-20 18:47:49,667 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:49,668 INFO L216 NwaCegarLoop]: trace histogram [38, 38, 38, 38, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:49,683 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-09-20 18:47:49,868 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-09-20 18:47:49,868 INFO L399 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:49,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:49,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1538518159, now seen corresponding path program 44 times [2024-09-20 18:47:49,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:49,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000238487] [2024-09-20 18:47:49,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:49,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-20 18:47:51,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-20 18:47:51,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 18:47:51,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 18:47:51,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 18:47:51,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-20 18:47:51,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-20 18:47:51,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-20 18:47:51,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-20 18:47:51,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,910 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-20 18:47:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-20 18:47:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,911 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-20 18:47:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,912 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-20 18:47:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-20 18:47:51,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-20 18:47:51,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,915 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-20 18:47:51,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-20 18:47:51,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-20 18:47:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-20 18:47:51,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-20 18:47:51,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,920 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-20 18:47:51,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-20 18:47:51,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-20 18:47:51,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-20 18:47:51,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-20 18:47:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-20 18:47:51,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-20 18:47:51,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-20 18:47:51,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-20 18:47:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-20 18:47:51,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2024-09-20 18:47:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-09-20 18:47:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2024-09-20 18:47:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2024-09-20 18:47:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2024-09-20 18:47:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2024-09-20 18:47:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,936 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2024-09-20 18:47:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:51,937 INFO L134 CoverageAnalysis]: Checked inductivity of 6882 backedges. 2704 proven. 1514 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-20 18:47:51,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:51,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000238487] [2024-09-20 18:47:51,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000238487] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:51,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324179370] [2024-09-20 18:47:51,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:47:51,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:51,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:51,939 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:51,941 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-09-20 18:47:52,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:47:52,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:52,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-09-20 18:47:52,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:53,844 INFO L134 CoverageAnalysis]: Checked inductivity of 6882 backedges. 2812 proven. 1406 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-20 18:47:53,845 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:55,252 INFO L134 CoverageAnalysis]: Checked inductivity of 6882 backedges. 2812 proven. 1406 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-20 18:47:55,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324179370] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:55,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:55,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78, 78] total 118 [2024-09-20 18:47:55,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655741273] [2024-09-20 18:47:55,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:55,253 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2024-09-20 18:47:55,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:55,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2024-09-20 18:47:55,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3123, Invalid=10683, Unknown=0, NotChecked=0, Total=13806 [2024-09-20 18:47:55,254 INFO L87 Difference]: Start difference. First operand 350 states and 363 transitions. Second operand has 118 states, 118 states have (on average 2.7033898305084745) internal successors, (319), 118 states have internal predecessors, (319), 77 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2024-09-20 18:47:56,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:47:56,891 INFO L93 Difference]: Finished difference Result 625 states and 752 transitions. [2024-09-20 18:47:56,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-09-20 18:47:56,892 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 118 states have (on average 2.7033898305084745) internal successors, (319), 118 states have internal predecessors, (319), 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 387 [2024-09-20 18:47:56,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:47:56,894 INFO L225 Difference]: With dead ends: 625 [2024-09-20 18:47:56,894 INFO L226 Difference]: Without dead ends: 466 [2024-09-20 18:47:56,896 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 965 GetRequests, 737 SyntacticMatches, 74 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9020 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=6089, Invalid=18091, Unknown=0, NotChecked=0, Total=24180 [2024-09-20 18:47:56,897 INFO L434 NwaCegarLoop]: 123 mSDtfsCounter, 328 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 1537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-20 18:47:56,897 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 1167 Invalid, 1537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 1333 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-20 18:47:56,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2024-09-20 18:47:56,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 352. [2024-09-20 18:47:56,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 282 states have (on average 1.0141843971631206) internal successors, (286), 283 states have internal predecessors, (286), 40 states have call successors, (40), 30 states have call predecessors, (40), 29 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-20 18:47:56,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 365 transitions. [2024-09-20 18:47:56,933 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 365 transitions. Word has length 387 [2024-09-20 18:47:56,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:47:56,933 INFO L474 AbstractCegarLoop]: Abstraction has 352 states and 365 transitions. [2024-09-20 18:47:56,933 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 118 states have (on average 2.7033898305084745) internal successors, (319), 118 states have internal predecessors, (319), 77 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2024-09-20 18:47:56,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:56,934 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 365 transitions. [2024-09-20 18:47:56,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2024-09-20 18:47:56,935 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:47:56,935 INFO L216 NwaCegarLoop]: trace histogram [39, 38, 38, 38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:47:56,949 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-09-20 18:47:57,136 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-09-20 18:47:57,136 INFO L399 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:47:57,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:47:57,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1299083786, now seen corresponding path program 45 times [2024-09-20 18:47:57,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:47:57,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069333991] [2024-09-20 18:47:57,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:47:57,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:47:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:47:58,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,461 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 18:47:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,462 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 18:47:58,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,463 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 18:47:58,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 18:47:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 18:47:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-20 18:47:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-20 18:47:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-20 18:47:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 18:47:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-20 18:47:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-20 18:47:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-20 18:47:58,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-20 18:47:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-20 18:47:58,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-20 18:47:58,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-20 18:47:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-20 18:47:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-20 18:47:58,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-20 18:47:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-20 18:47:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-20 18:47:58,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-20 18:47:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-20 18:47:58,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-20 18:47:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-20 18:47:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-20 18:47:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-20 18:47:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-20 18:47:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-20 18:47:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-20 18:47:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-20 18:47:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-20 18:47:58,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-20 18:47:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-20 18:47:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-20 18:47:58,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2024-09-20 18:47:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2024-09-20 18:47:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:47:58,494 INFO L134 CoverageAnalysis]: Checked inductivity of 6958 backedges. 1480 proven. 2814 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-20 18:47:58,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:47:58,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069333991] [2024-09-20 18:47:58,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069333991] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:47:58,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381543978] [2024-09-20 18:47:58,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:47:58,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:47:58,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:47:58,497 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:47:58,498 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-09-20 18:47:58,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2024-09-20 18:47:58,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:47:58,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 1064 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-09-20 18:47:58,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:47:58,892 INFO L134 CoverageAnalysis]: Checked inductivity of 6958 backedges. 1556 proven. 2738 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-20 18:47:58,893 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:47:59,856 INFO L134 CoverageAnalysis]: Checked inductivity of 6958 backedges. 1556 proven. 2738 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-20 18:47:59,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381543978] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:47:59,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:47:59,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 47 [2024-09-20 18:47:59,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18512621] [2024-09-20 18:47:59,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:47:59,857 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-09-20 18:47:59,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:47:59,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-09-20 18:47:59,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=875, Invalid=1287, Unknown=0, NotChecked=0, Total=2162 [2024-09-20 18:47:59,858 INFO L87 Difference]: Start difference. First operand 352 states and 365 transitions. Second operand has 47 states, 47 states have (on average 4.76595744680851) internal successors, (224), 45 states have internal predecessors, (224), 40 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-20 18:48:00,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:48:00,103 INFO L93 Difference]: Finished difference Result 371 states and 386 transitions. [2024-09-20 18:48:00,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-20 18:48:00,103 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 4.76595744680851) internal successors, (224), 45 states have internal predecessors, (224), 40 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 389 [2024-09-20 18:48:00,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:48:00,105 INFO L225 Difference]: With dead ends: 371 [2024-09-20 18:48:00,105 INFO L226 Difference]: Without dead ends: 369 [2024-09-20 18:48:00,106 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 934 GetRequests, 811 SyntacticMatches, 77 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2119 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=881, Invalid=1375, Unknown=0, NotChecked=0, Total=2256 [2024-09-20 18:48:00,106 INFO L434 NwaCegarLoop]: 57 mSDtfsCounter, 12 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:48:00,106 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 469 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:48:00,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2024-09-20 18:48:00,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 364. [2024-09-20 18:48:00,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 291 states have (on average 1.013745704467354) internal successors, (295), 292 states have internal predecessors, (295), 42 states have call successors, (42), 31 states have call predecessors, (42), 30 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-20 18:48:00,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 378 transitions. [2024-09-20 18:48:00,146 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 378 transitions. Word has length 389 [2024-09-20 18:48:00,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:48:00,146 INFO L474 AbstractCegarLoop]: Abstraction has 364 states and 378 transitions. [2024-09-20 18:48:00,146 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 4.76595744680851) internal successors, (224), 45 states have internal predecessors, (224), 40 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-09-20 18:48:00,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:00,147 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 378 transitions. [2024-09-20 18:48:00,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-09-20 18:48:00,148 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:48:00,148 INFO L216 NwaCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 39, 39, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:48:00,162 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-09-20 18:48:00,348 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,46 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:00,349 INFO L399 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:48:00,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:00,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1082531032, now seen corresponding path program 46 times [2024-09-20 18:48:00,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:48:00,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091691475] [2024-09-20 18:48:00,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:48:00,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:48:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:48:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-20 18:48:02,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 18:48:02,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 18:48:02,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 18:48:02,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 18:48:02,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-20 18:48:02,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-20 18:48:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-20 18:48:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 18:48:02,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-20 18:48:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-20 18:48:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-20 18:48:02,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-20 18:48:02,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-20 18:48:02,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-20 18:48:02,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-20 18:48:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-20 18:48:02,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-20 18:48:02,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-20 18:48:02,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-20 18:48:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-20 18:48:02,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-20 18:48:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-20 18:48:02,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-20 18:48:02,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-20 18:48:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-20 18:48:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-20 18:48:02,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-20 18:48:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-20 18:48:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-20 18:48:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-20 18:48:02,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-20 18:48:02,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-20 18:48:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-20 18:48:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-20 18:48:02,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2024-09-20 18:48:02,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2024-09-20 18:48:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2024-09-20 18:48:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2024-09-20 18:48:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:02,591 INFO L134 CoverageAnalysis]: Checked inductivity of 7566 backedges. 3006 proven. 1596 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-20 18:48:02,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:48:02,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091691475] [2024-09-20 18:48:02,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091691475] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:48:02,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763146827] [2024-09-20 18:48:02,591 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:48:02,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:02,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:48:02,593 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:48:02,593 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-09-20 18:48:02,761 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:48:02,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:48:02,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 1098 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-09-20 18:48:02,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:48:04,629 INFO L134 CoverageAnalysis]: Checked inductivity of 7566 backedges. 3120 proven. 1482 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-20 18:48:04,630 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:48:06,156 INFO L134 CoverageAnalysis]: Checked inductivity of 7566 backedges. 3120 proven. 1482 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-20 18:48:06,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763146827] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:48:06,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:48:06,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81, 81] total 125 [2024-09-20 18:48:06,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366676750] [2024-09-20 18:48:06,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:48:06,157 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2024-09-20 18:48:06,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:48:06,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2024-09-20 18:48:06,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3530, Invalid=11970, Unknown=0, NotChecked=0, Total=15500 [2024-09-20 18:48:06,159 INFO L87 Difference]: Start difference. First operand 364 states and 378 transitions. Second operand has 125 states, 125 states have (on average 2.728) internal successors, (341), 125 states have internal predecessors, (341), 82 states have call successors, (83), 2 states have call predecessors, (83), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-09-20 18:48:08,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:48:08,900 INFO L93 Difference]: Finished difference Result 814 states and 987 transitions. [2024-09-20 18:48:08,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2024-09-20 18:48:08,900 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 125 states have (on average 2.728) internal successors, (341), 125 states have internal predecessors, (341), 82 states have call successors, (83), 2 states have call predecessors, (83), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) Word has length 405 [2024-09-20 18:48:08,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:48:08,903 INFO L225 Difference]: With dead ends: 814 [2024-09-20 18:48:08,903 INFO L226 Difference]: Without dead ends: 488 [2024-09-20 18:48:08,907 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1049 GetRequests, 772 SyntacticMatches, 75 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14382 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=10049, Invalid=31363, Unknown=0, NotChecked=0, Total=41412 [2024-09-20 18:48:08,908 INFO L434 NwaCegarLoop]: 126 mSDtfsCounter, 390 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 1706 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 1980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-20 18:48:08,908 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 1212 Invalid, 1980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1706 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-20 18:48:08,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2024-09-20 18:48:08,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 368. [2024-09-20 18:48:08,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 295 states have (on average 1.0135593220338983) internal successors, (299), 296 states have internal predecessors, (299), 42 states have call successors, (42), 31 states have call predecessors, (42), 30 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-20 18:48:08,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 382 transitions. [2024-09-20 18:48:08,948 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 382 transitions. Word has length 405 [2024-09-20 18:48:08,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:48:08,949 INFO L474 AbstractCegarLoop]: Abstraction has 368 states and 382 transitions. [2024-09-20 18:48:08,949 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 125 states have (on average 2.728) internal successors, (341), 125 states have internal predecessors, (341), 82 states have call successors, (83), 2 states have call predecessors, (83), 1 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-09-20 18:48:08,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:08,949 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 382 transitions. [2024-09-20 18:48:08,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2024-09-20 18:48:08,951 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:48:08,951 INFO L216 NwaCegarLoop]: trace histogram [41, 40, 40, 40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:48:08,966 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2024-09-20 18:48:09,151 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,47 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:09,152 INFO L399 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:48:09,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:09,152 INFO L85 PathProgramCache]: Analyzing trace with hash -572398046, now seen corresponding path program 47 times [2024-09-20 18:48:09,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:48:09,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159763843] [2024-09-20 18:48:09,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:48:09,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:48:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:48:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 18:48:10,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 18:48:10,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 18:48:10,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 18:48:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 18:48:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 18:48:10,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-20 18:48:10,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-20 18:48:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-20 18:48:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-20 18:48:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 18:48:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-20 18:48:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-20 18:48:10,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-20 18:48:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-20 18:48:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-20 18:48:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-20 18:48:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-20 18:48:10,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,617 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-20 18:48:10,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,618 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-20 18:48:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-20 18:48:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,620 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-20 18:48:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-20 18:48:10,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-20 18:48:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-20 18:48:10,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-20 18:48:10,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,624 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-20 18:48:10,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-20 18:48:10,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-20 18:48:10,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,626 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-20 18:48:10,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,627 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-20 18:48:10,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,628 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-20 18:48:10,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,629 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-20 18:48:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,630 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-20 18:48:10,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,631 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2024-09-20 18:48:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,632 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2024-09-20 18:48:10,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2024-09-20 18:48:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,633 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2024-09-20 18:48:10,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,634 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2024-09-20 18:48:10,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:10,636 INFO L134 CoverageAnalysis]: Checked inductivity of 7724 backedges. 1638 proven. 3122 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-20 18:48:10,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:48:10,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159763843] [2024-09-20 18:48:10,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159763843] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:48:10,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999844932] [2024-09-20 18:48:10,636 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:48:10,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:10,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:48:10,637 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:48:10,638 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-09-20 18:48:10,858 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 41 check-sat command(s) [2024-09-20 18:48:10,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:48:10,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 1118 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-09-20 18:48:10,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:48:11,069 INFO L134 CoverageAnalysis]: Checked inductivity of 7724 backedges. 1718 proven. 3042 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-20 18:48:11,069 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:48:12,177 INFO L134 CoverageAnalysis]: Checked inductivity of 7724 backedges. 1718 proven. 3042 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-20 18:48:12,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999844932] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:48:12,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:48:12,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 49 [2024-09-20 18:48:12,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544782987] [2024-09-20 18:48:12,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:48:12,178 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-20 18:48:12,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:48:12,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-20 18:48:12,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=1392, Unknown=0, NotChecked=0, Total=2352 [2024-09-20 18:48:12,179 INFO L87 Difference]: Start difference. First operand 368 states and 382 transitions. Second operand has 49 states, 49 states have (on average 4.775510204081633) internal successors, (234), 47 states have internal predecessors, (234), 42 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-20 18:48:12,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:48:12,414 INFO L93 Difference]: Finished difference Result 387 states and 403 transitions. [2024-09-20 18:48:12,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-20 18:48:12,414 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 4.775510204081633) internal successors, (234), 47 states have internal predecessors, (234), 42 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Word has length 409 [2024-09-20 18:48:12,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:48:12,416 INFO L225 Difference]: With dead ends: 387 [2024-09-20 18:48:12,416 INFO L226 Difference]: Without dead ends: 385 [2024-09-20 18:48:12,417 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 982 GetRequests, 853 SyntacticMatches, 81 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2311 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=966, Invalid=1484, Unknown=0, NotChecked=0, Total=2450 [2024-09-20 18:48:12,417 INFO L434 NwaCegarLoop]: 59 mSDtfsCounter, 12 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:48:12,417 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 541 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:48:12,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-09-20 18:48:12,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 380. [2024-09-20 18:48:12,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 304 states have (on average 1.013157894736842) internal successors, (308), 305 states have internal predecessors, (308), 44 states have call successors, (44), 32 states have call predecessors, (44), 31 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-20 18:48:12,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 395 transitions. [2024-09-20 18:48:12,455 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 395 transitions. Word has length 409 [2024-09-20 18:48:12,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:48:12,455 INFO L474 AbstractCegarLoop]: Abstraction has 380 states and 395 transitions. [2024-09-20 18:48:12,456 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 4.775510204081633) internal successors, (234), 47 states have internal predecessors, (234), 42 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-09-20 18:48:12,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:12,456 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 395 transitions. [2024-09-20 18:48:12,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2024-09-20 18:48:12,457 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:48:12,457 INFO L216 NwaCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 41, 41, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:48:12,471 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-09-20 18:48:12,658 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-09-20 18:48:12,658 INFO L399 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:48:12,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:12,658 INFO L85 PathProgramCache]: Analyzing trace with hash 223911172, now seen corresponding path program 48 times [2024-09-20 18:48:12,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:48:12,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616824718] [2024-09-20 18:48:12,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:48:12,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:48:12,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:48:15,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-20 18:48:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 18:48:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 18:48:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 18:48:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 18:48:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 18:48:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-20 18:48:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-20 18:48:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-20 18:48:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-20 18:48:15,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 18:48:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-20 18:48:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,056 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-20 18:48:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-20 18:48:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-20 18:48:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-20 18:48:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-20 18:48:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-20 18:48:15,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-20 18:48:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-20 18:48:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-20 18:48:15,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-20 18:48:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-20 18:48:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-20 18:48:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-20 18:48:15,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-20 18:48:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-20 18:48:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-20 18:48:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-20 18:48:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-20 18:48:15,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-20 18:48:15,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-20 18:48:15,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-20 18:48:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-20 18:48:15,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2024-09-20 18:48:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2024-09-20 18:48:15,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2024-09-20 18:48:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2024-09-20 18:48:15,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2024-09-20 18:48:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2024-09-20 18:48:15,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2024-09-20 18:48:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:15,089 INFO L134 CoverageAnalysis]: Checked inductivity of 8364 backedges. 3324 proven. 1760 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-20 18:48:15,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:48:15,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616824718] [2024-09-20 18:48:15,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616824718] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:48:15,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395646782] [2024-09-20 18:48:15,090 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:48:15,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:15,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:48:15,092 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:48:15,093 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-09-20 18:48:15,358 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) [2024-09-20 18:48:15,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:48:15,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 1152 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-09-20 18:48:15,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:48:17,406 INFO L134 CoverageAnalysis]: Checked inductivity of 8364 backedges. 3444 proven. 1640 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-20 18:48:17,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:48:19,079 INFO L134 CoverageAnalysis]: Checked inductivity of 8364 backedges. 3444 proven. 1640 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-20 18:48:19,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395646782] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:48:19,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:48:19,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85, 85] total 131 [2024-09-20 18:48:19,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252771831] [2024-09-20 18:48:19,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:48:19,080 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2024-09-20 18:48:19,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:48:19,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2024-09-20 18:48:19,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3874, Invalid=13156, Unknown=0, NotChecked=0, Total=17030 [2024-09-20 18:48:19,082 INFO L87 Difference]: Start difference. First operand 380 states and 395 transitions. Second operand has 131 states, 131 states have (on average 2.7251908396946565) internal successors, (357), 131 states have internal predecessors, (357), 86 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2024-09-20 18:48:22,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:48:22,048 INFO L93 Difference]: Finished difference Result 852 states and 1034 transitions. [2024-09-20 18:48:22,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2024-09-20 18:48:22,048 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 2.7251908396946565) internal successors, (357), 131 states have internal predecessors, (357), 86 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) Word has length 425 [2024-09-20 18:48:22,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:48:22,051 INFO L225 Difference]: With dead ends: 852 [2024-09-20 18:48:22,051 INFO L226 Difference]: Without dead ends: 510 [2024-09-20 18:48:22,053 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1101 GetRequests, 810 SyntacticMatches, 79 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15846 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=11055, Invalid=34527, Unknown=0, NotChecked=0, Total=45582 [2024-09-20 18:48:22,053 INFO L434 NwaCegarLoop]: 132 mSDtfsCounter, 428 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 1841 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 2140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 1841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-09-20 18:48:22,054 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 1240 Invalid, 2140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 1841 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-20 18:48:22,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2024-09-20 18:48:22,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 384. [2024-09-20 18:48:22,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 308 states have (on average 1.0129870129870129) internal successors, (312), 309 states have internal predecessors, (312), 44 states have call successors, (44), 32 states have call predecessors, (44), 31 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-20 18:48:22,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 399 transitions. [2024-09-20 18:48:22,096 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 399 transitions. Word has length 425 [2024-09-20 18:48:22,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:48:22,096 INFO L474 AbstractCegarLoop]: Abstraction has 384 states and 399 transitions. [2024-09-20 18:48:22,096 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 2.7251908396946565) internal successors, (357), 131 states have internal predecessors, (357), 86 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2024-09-20 18:48:22,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:22,097 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 399 transitions. [2024-09-20 18:48:22,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2024-09-20 18:48:22,098 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:48:22,099 INFO L216 NwaCegarLoop]: trace histogram [43, 42, 42, 42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:48:22,112 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-09-20 18:48:22,302 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:22,302 INFO L399 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:48:22,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:22,303 INFO L85 PathProgramCache]: Analyzing trace with hash 741137742, now seen corresponding path program 49 times [2024-09-20 18:48:22,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:48:22,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928531162] [2024-09-20 18:48:22,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:48:22,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:48:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:48:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 18:48:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 18:48:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 18:48:23,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 18:48:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-20 18:48:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-20 18:48:23,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-20 18:48:23,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 18:48:23,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-20 18:48:23,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-20 18:48:23,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-20 18:48:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-20 18:48:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-20 18:48:23,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-20 18:48:23,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-20 18:48:23,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-20 18:48:23,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-20 18:48:23,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-20 18:48:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-20 18:48:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-20 18:48:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-20 18:48:23,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-20 18:48:23,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-20 18:48:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-20 18:48:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-20 18:48:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-20 18:48:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-20 18:48:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-20 18:48:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-20 18:48:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-20 18:48:23,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-20 18:48:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-20 18:48:23,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-20 18:48:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-20 18:48:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2024-09-20 18:48:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2024-09-20 18:48:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2024-09-20 18:48:23,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2024-09-20 18:48:23,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2024-09-20 18:48:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2024-09-20 18:48:23,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2024-09-20 18:48:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:23,994 INFO L134 CoverageAnalysis]: Checked inductivity of 8530 backedges. 1804 proven. 3446 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-20 18:48:23,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:48:23,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928531162] [2024-09-20 18:48:23,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928531162] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:48:23,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932136712] [2024-09-20 18:48:23,995 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:48:23,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:23,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:48:23,997 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:48:23,998 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-09-20 18:48:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:24,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-09-20 18:48:24,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:48:24,435 INFO L134 CoverageAnalysis]: Checked inductivity of 8530 backedges. 1888 proven. 3362 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-20 18:48:24,435 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:48:25,597 INFO L134 CoverageAnalysis]: Checked inductivity of 8530 backedges. 1888 proven. 3362 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-20 18:48:25,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932136712] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:48:25,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:48:25,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 51 [2024-09-20 18:48:25,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633390303] [2024-09-20 18:48:25,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:48:25,598 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-09-20 18:48:25,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:48:25,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-09-20 18:48:25,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1049, Invalid=1501, Unknown=0, NotChecked=0, Total=2550 [2024-09-20 18:48:25,599 INFO L87 Difference]: Start difference. First operand 384 states and 399 transitions. Second operand has 51 states, 51 states have (on average 4.784313725490196) internal successors, (244), 49 states have internal predecessors, (244), 44 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-20 18:48:25,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:48:25,848 INFO L93 Difference]: Finished difference Result 403 states and 420 transitions. [2024-09-20 18:48:25,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-09-20 18:48:25,848 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 4.784313725490196) internal successors, (244), 49 states have internal predecessors, (244), 44 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Word has length 429 [2024-09-20 18:48:25,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:48:25,851 INFO L225 Difference]: With dead ends: 403 [2024-09-20 18:48:25,851 INFO L226 Difference]: Without dead ends: 401 [2024-09-20 18:48:25,851 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1030 GetRequests, 895 SyntacticMatches, 85 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2511 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1055, Invalid=1597, Unknown=0, NotChecked=0, Total=2652 [2024-09-20 18:48:25,851 INFO L434 NwaCegarLoop]: 61 mSDtfsCounter, 12 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:48:25,852 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 550 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:48:25,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2024-09-20 18:48:25,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 396. [2024-09-20 18:48:25,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 317 states have (on average 1.0126182965299684) internal successors, (321), 318 states have internal predecessors, (321), 46 states have call successors, (46), 33 states have call predecessors, (46), 32 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-20 18:48:25,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 412 transitions. [2024-09-20 18:48:25,896 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 412 transitions. Word has length 429 [2024-09-20 18:48:25,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:48:25,897 INFO L474 AbstractCegarLoop]: Abstraction has 396 states and 412 transitions. [2024-09-20 18:48:25,897 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 4.784313725490196) internal successors, (244), 49 states have internal predecessors, (244), 44 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-09-20 18:48:25,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:25,898 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 412 transitions. [2024-09-20 18:48:25,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2024-09-20 18:48:25,900 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:48:25,900 INFO L216 NwaCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 43, 43, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:48:25,918 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-09-20 18:48:26,101 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,50 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:26,101 INFO L399 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:48:26,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:26,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1242020912, now seen corresponding path program 50 times [2024-09-20 18:48:26,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:48:26,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609009371] [2024-09-20 18:48:26,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:48:26,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:48:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:48:28,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-20 18:48:28,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 18:48:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 18:48:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 18:48:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-20 18:48:28,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-20 18:48:28,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-20 18:48:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 18:48:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-20 18:48:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-20 18:48:28,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-20 18:48:28,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-20 18:48:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-20 18:48:28,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-20 18:48:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-20 18:48:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-20 18:48:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-20 18:48:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-20 18:48:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-20 18:48:28,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-20 18:48:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-20 18:48:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-20 18:48:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-20 18:48:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-20 18:48:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-20 18:48:28,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-20 18:48:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-20 18:48:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-20 18:48:28,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-20 18:48:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-20 18:48:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-20 18:48:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-20 18:48:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-20 18:48:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-20 18:48:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2024-09-20 18:48:28,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2024-09-20 18:48:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2024-09-20 18:48:28,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2024-09-20 18:48:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2024-09-20 18:48:28,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2024-09-20 18:48:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2024-09-20 18:48:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2024-09-20 18:48:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2024-09-20 18:48:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:28,807 INFO L134 CoverageAnalysis]: Checked inductivity of 9202 backedges. 3658 proven. 1932 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-20 18:48:28,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:48:28,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609009371] [2024-09-20 18:48:28,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609009371] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:48:28,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445095223] [2024-09-20 18:48:28,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:48:28,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:28,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:48:28,812 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:48:28,812 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-09-20 18:48:28,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:48:28,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:48:28,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 1206 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-09-20 18:48:29,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:48:31,193 INFO L134 CoverageAnalysis]: Checked inductivity of 9202 backedges. 3948 proven. 1806 refuted. 0 times theorem prover too weak. 3448 trivial. 0 not checked. [2024-09-20 18:48:31,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:48:32,984 INFO L134 CoverageAnalysis]: Checked inductivity of 9202 backedges. 3782 proven. 1806 refuted. 0 times theorem prover too weak. 3614 trivial. 0 not checked. [2024-09-20 18:48:32,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445095223] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:48:32,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:48:32,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 88, 88] total 134 [2024-09-20 18:48:32,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364554046] [2024-09-20 18:48:32,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:48:32,985 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2024-09-20 18:48:32,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:48:32,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2024-09-20 18:48:32,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4008, Invalid=13814, Unknown=0, NotChecked=0, Total=17822 [2024-09-20 18:48:32,988 INFO L87 Difference]: Start difference. First operand 396 states and 412 transitions. Second operand has 134 states, 134 states have (on average 2.7388059701492535) internal successors, (367), 134 states have internal predecessors, (367), 88 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (89), 88 states have call predecessors, (89), 88 states have call successors, (89) [2024-09-20 18:48:35,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:48:35,058 INFO L93 Difference]: Finished difference Result 712 states and 857 transitions. [2024-09-20 18:48:35,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-09-20 18:48:35,058 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 134 states have (on average 2.7388059701492535) internal successors, (367), 134 states have internal predecessors, (367), 88 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (89), 88 states have call predecessors, (89), 88 states have call successors, (89) Word has length 445 [2024-09-20 18:48:35,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:48:35,061 INFO L225 Difference]: With dead ends: 712 [2024-09-20 18:48:35,061 INFO L226 Difference]: Without dead ends: 527 [2024-09-20 18:48:35,064 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1109 GetRequests, 850 SyntacticMatches, 84 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11671 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=7794, Invalid=23358, Unknown=0, NotChecked=0, Total=31152 [2024-09-20 18:48:35,064 INFO L434 NwaCegarLoop]: 138 mSDtfsCounter, 402 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 1553 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 1797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 1553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-20 18:48:35,064 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 1069 Invalid, 1797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 1553 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-20 18:48:35,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2024-09-20 18:48:35,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 398. [2024-09-20 18:48:35,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 319 states have (on average 1.0125391849529781) internal successors, (323), 320 states have internal predecessors, (323), 46 states have call successors, (46), 33 states have call predecessors, (46), 32 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2024-09-20 18:48:35,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 414 transitions. [2024-09-20 18:48:35,120 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 414 transitions. Word has length 445 [2024-09-20 18:48:35,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:48:35,120 INFO L474 AbstractCegarLoop]: Abstraction has 398 states and 414 transitions. [2024-09-20 18:48:35,120 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 2.7388059701492535) internal successors, (367), 134 states have internal predecessors, (367), 88 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (89), 88 states have call predecessors, (89), 88 states have call successors, (89) [2024-09-20 18:48:35,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:35,120 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 414 transitions. [2024-09-20 18:48:35,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2024-09-20 18:48:35,122 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:48:35,122 INFO L216 NwaCegarLoop]: trace histogram [44, 44, 44, 44, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:48:35,135 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2024-09-20 18:48:35,322 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2024-09-20 18:48:35,322 INFO L399 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:48:35,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:35,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1511265909, now seen corresponding path program 51 times [2024-09-20 18:48:35,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:48:35,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464435907] [2024-09-20 18:48:35,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:48:35,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:48:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:48:38,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-20 18:48:38,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 18:48:38,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 18:48:38,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 18:48:38,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 18:48:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 18:48:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 18:48:38,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-20 18:48:38,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-20 18:48:38,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-20 18:48:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-20 18:48:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-20 18:48:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-20 18:48:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-20 18:48:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-20 18:48:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-20 18:48:38,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-20 18:48:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-20 18:48:38,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-20 18:48:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-20 18:48:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-20 18:48:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-20 18:48:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-20 18:48:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-20 18:48:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-20 18:48:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-20 18:48:38,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-20 18:48:38,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-20 18:48:38,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-20 18:48:38,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-20 18:48:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-20 18:48:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-09-20 18:48:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-09-20 18:48:38,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2024-09-20 18:48:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2024-09-20 18:48:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2024-09-20 18:48:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2024-09-20 18:48:38,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2024-09-20 18:48:38,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2024-09-20 18:48:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,111 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2024-09-20 18:48:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2024-09-20 18:48:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2024-09-20 18:48:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,114 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2024-09-20 18:48:38,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:38,117 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 3658 proven. 2018 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-20 18:48:38,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:48:38,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464435907] [2024-09-20 18:48:38,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464435907] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:48:38,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893859132] [2024-09-20 18:48:38,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:48:38,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:38,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:48:38,119 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:48:38,119 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-09-20 18:48:38,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 44 check-sat command(s) [2024-09-20 18:48:38,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:48:38,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 1216 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-09-20 18:48:38,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:48:40,230 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 1978 proven. 3698 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-20 18:48:40,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:48:43,674 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 1978 proven. 3698 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-20 18:48:43,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893859132] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:48:43,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:48:43,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 48, 48] total 136 [2024-09-20 18:48:43,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508484026] [2024-09-20 18:48:43,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:48:43,676 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 136 states [2024-09-20 18:48:43,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:48:43,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2024-09-20 18:48:43,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3064, Invalid=15296, Unknown=0, NotChecked=0, Total=18360 [2024-09-20 18:48:43,678 INFO L87 Difference]: Start difference. First operand 398 states and 414 transitions. Second operand has 136 states, 136 states have (on average 3.360294117647059) internal successors, (457), 135 states have internal predecessors, (457), 89 states have call successors, (90), 3 states have call predecessors, (90), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2024-09-20 18:48:47,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:48:47,138 INFO L93 Difference]: Finished difference Result 724 states and 873 transitions. [2024-09-20 18:48:47,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2024-09-20 18:48:47,138 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 136 states have (on average 3.360294117647059) internal successors, (457), 135 states have internal predecessors, (457), 89 states have call successors, (90), 3 states have call predecessors, (90), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) Word has length 447 [2024-09-20 18:48:47,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:48:47,141 INFO L225 Difference]: With dead ends: 724 [2024-09-20 18:48:47,141 INFO L226 Difference]: Without dead ends: 541 [2024-09-20 18:48:47,145 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1247 GetRequests, 892 SyntacticMatches, 89 SemanticMatches, 266 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33062 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=12149, Invalid=59407, Unknown=0, NotChecked=0, Total=71556 [2024-09-20 18:48:47,145 INFO L434 NwaCegarLoop]: 139 mSDtfsCounter, 667 mSDsluCounter, 1777 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 1916 SdHoareTripleChecker+Invalid, 2963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 2531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-20 18:48:47,145 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [668 Valid, 1916 Invalid, 2963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 2531 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-20 18:48:47,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2024-09-20 18:48:47,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 408. [2024-09-20 18:48:47,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 327 states have (on average 1.0122324159021407) internal successors, (331), 328 states have internal predecessors, (331), 47 states have call successors, (47), 34 states have call predecessors, (47), 33 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2024-09-20 18:48:47,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 424 transitions. [2024-09-20 18:48:47,192 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 424 transitions. Word has length 447 [2024-09-20 18:48:47,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:48:47,192 INFO L474 AbstractCegarLoop]: Abstraction has 408 states and 424 transitions. [2024-09-20 18:48:47,192 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 136 states, 136 states have (on average 3.360294117647059) internal successors, (457), 135 states have internal predecessors, (457), 89 states have call successors, (90), 3 states have call predecessors, (90), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2024-09-20 18:48:47,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:47,193 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 424 transitions. [2024-09-20 18:48:47,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2024-09-20 18:48:47,194 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:48:47,195 INFO L216 NwaCegarLoop]: trace histogram [45, 45, 45, 45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:48:47,208 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2024-09-20 18:48:47,395 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,52 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:47,395 INFO L399 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:48:47,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:47,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1132902251, now seen corresponding path program 52 times [2024-09-20 18:48:47,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:48:47,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116236329] [2024-09-20 18:48:47,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:48:47,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:48:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:48:50,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-20 18:48:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 18:48:50,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,368 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 18:48:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,369 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 18:48:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,370 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 18:48:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-20 18:48:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,372 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-20 18:48:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-20 18:48:50,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,373 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-20 18:48:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 18:48:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-20 18:48:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-20 18:48:50,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-20 18:48:50,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-20 18:48:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-20 18:48:50,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-20 18:48:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-20 18:48:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-20 18:48:50,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-20 18:48:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-20 18:48:50,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-20 18:48:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-20 18:48:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-20 18:48:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-20 18:48:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-20 18:48:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-20 18:48:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-20 18:48:50,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-20 18:48:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-20 18:48:50,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-20 18:48:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-20 18:48:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-20 18:48:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-20 18:48:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2024-09-20 18:48:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2024-09-20 18:48:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2024-09-20 18:48:50,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2024-09-20 18:48:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2024-09-20 18:48:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2024-09-20 18:48:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2024-09-20 18:48:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2024-09-20 18:48:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2024-09-20 18:48:50,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2024-09-20 18:48:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2024-09-20 18:48:50,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:48:50,408 INFO L134 CoverageAnalysis]: Checked inductivity of 9724 backedges. 3831 proven. 2109 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-20 18:48:50,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:48:50,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116236329] [2024-09-20 18:48:50,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116236329] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:48:50,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354777429] [2024-09-20 18:48:50,408 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-20 18:48:50,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:50,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:48:50,410 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:48:50,410 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-09-20 18:48:50,613 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-20 18:48:50,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:48:50,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 1243 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-09-20 18:48:50,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:48:52,461 INFO L134 CoverageAnalysis]: Checked inductivity of 9724 backedges. 2068 proven. 3872 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-20 18:48:52,461 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:48:55,896 INFO L134 CoverageAnalysis]: Checked inductivity of 9724 backedges. 2068 proven. 3872 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-20 18:48:55,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354777429] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:48:55,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:48:55,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 49, 49] total 139 [2024-09-20 18:48:55,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837431916] [2024-09-20 18:48:55,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:48:55,898 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2024-09-20 18:48:55,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:48:55,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2024-09-20 18:48:55,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3201, Invalid=15981, Unknown=0, NotChecked=0, Total=19182 [2024-09-20 18:48:55,900 INFO L87 Difference]: Start difference. First operand 408 states and 424 transitions. Second operand has 139 states, 139 states have (on average 3.3597122302158273) internal successors, (467), 138 states have internal predecessors, (467), 91 states have call successors, (92), 3 states have call predecessors, (92), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2024-09-20 18:48:59,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:48:59,577 INFO L93 Difference]: Finished difference Result 741 states and 893 transitions. [2024-09-20 18:48:59,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2024-09-20 18:48:59,578 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 139 states have (on average 3.3597122302158273) internal successors, (467), 138 states have internal predecessors, (467), 91 states have call successors, (92), 3 states have call predecessors, (92), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) Word has length 457 [2024-09-20 18:48:59,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:48:59,581 INFO L225 Difference]: With dead ends: 741 [2024-09-20 18:48:59,581 INFO L226 Difference]: Without dead ends: 554 [2024-09-20 18:48:59,585 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1275 GetRequests, 912 SyntacticMatches, 91 SemanticMatches, 272 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34601 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=12695, Invalid=62107, Unknown=0, NotChecked=0, Total=74802 [2024-09-20 18:48:59,586 INFO L434 NwaCegarLoop]: 142 mSDtfsCounter, 595 mSDsluCounter, 2059 mSDsCounter, 0 mSdLazyCounter, 2841 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 2201 SdHoareTripleChecker+Invalid, 3217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 2841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-09-20 18:48:59,586 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 2201 Invalid, 3217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 2841 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-20 18:48:59,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2024-09-20 18:48:59,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 418. [2024-09-20 18:48:59,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 335 states have (on average 1.0119402985074626) internal successors, (339), 336 states have internal predecessors, (339), 48 states have call successors, (48), 35 states have call predecessors, (48), 34 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-20 18:48:59,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 434 transitions. [2024-09-20 18:48:59,637 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 434 transitions. Word has length 457 [2024-09-20 18:48:59,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:48:59,637 INFO L474 AbstractCegarLoop]: Abstraction has 418 states and 434 transitions. [2024-09-20 18:48:59,637 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 139 states, 139 states have (on average 3.3597122302158273) internal successors, (467), 138 states have internal predecessors, (467), 91 states have call successors, (92), 3 states have call predecessors, (92), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2024-09-20 18:48:59,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:59,637 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 434 transitions. [2024-09-20 18:48:59,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2024-09-20 18:48:59,639 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:48:59,639 INFO L216 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 45, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:48:59,653 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-09-20 18:48:59,839 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,53 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:48:59,840 INFO L399 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:48:59,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:48:59,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1641447391, now seen corresponding path program 53 times [2024-09-20 18:48:59,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:48:59,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171466279] [2024-09-20 18:48:59,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:48:59,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:48:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:49:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-20 18:49:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-20 18:49:02,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-20 18:49:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-20 18:49:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-20 18:49:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-20 18:49:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-20 18:49:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-20 18:49:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-20 18:49:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-20 18:49:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-20 18:49:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-20 18:49:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-20 18:49:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-20 18:49:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-20 18:49:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-20 18:49:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-20 18:49:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-20 18:49:02,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-20 18:49:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-20 18:49:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-20 18:49:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-20 18:49:02,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-20 18:49:02,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-20 18:49:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-20 18:49:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-20 18:49:02,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-20 18:49:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-20 18:49:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2024-09-20 18:49:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-09-20 18:49:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2024-09-20 18:49:02,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2024-09-20 18:49:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2024-09-20 18:49:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2024-09-20 18:49:02,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2024-09-20 18:49:02,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2024-09-20 18:49:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2024-09-20 18:49:02,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2024-09-20 18:49:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2024-09-20 18:49:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:02,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2024-09-20 18:49:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:03,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2024-09-20 18:49:03,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:03,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2024-09-20 18:49:03,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:03,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2024-09-20 18:49:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:03,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2024-09-20 18:49:03,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:03,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2024-09-20 18:49:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:03,006 INFO L134 CoverageAnalysis]: Checked inductivity of 10170 backedges. 4008 proven. 2202 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-20 18:49:03,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:49:03,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171466279] [2024-09-20 18:49:03,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171466279] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:49:03,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021396497] [2024-09-20 18:49:03,007 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-20 18:49:03,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:03,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:49:03,008 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:49:03,008 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-09-20 18:49:03,266 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2024-09-20 18:49:03,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:49:03,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-09-20 18:49:03,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:49:05,728 INFO L134 CoverageAnalysis]: Checked inductivity of 10170 backedges. 4140 proven. 2070 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-20 18:49:05,728 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:49:07,673 INFO L134 CoverageAnalysis]: Checked inductivity of 10170 backedges. 4140 proven. 2070 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-20 18:49:07,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021396497] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:49:07,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:49:07,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94, 94] total 142 [2024-09-20 18:49:07,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975084790] [2024-09-20 18:49:07,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:49:07,674 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 142 states [2024-09-20 18:49:07,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:49:07,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2024-09-20 18:49:07,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4515, Invalid=15507, Unknown=0, NotChecked=0, Total=20022 [2024-09-20 18:49:07,677 INFO L87 Difference]: Start difference. First operand 418 states and 434 transitions. Second operand has 142 states, 142 states have (on average 2.6971830985915495) internal successors, (383), 142 states have internal predecessors, (383), 93 states have call successors, (94), 2 states have call predecessors, (94), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2024-09-20 18:49:10,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:49:10,316 INFO L93 Difference]: Finished difference Result 749 states and 903 transitions. [2024-09-20 18:49:10,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2024-09-20 18:49:10,316 INFO L78 Accepts]: Start accepts. Automaton has has 142 states, 142 states have (on average 2.6971830985915495) internal successors, (383), 142 states have internal predecessors, (383), 93 states have call successors, (94), 2 states have call predecessors, (94), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) Word has length 467 [2024-09-20 18:49:10,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:49:10,319 INFO L225 Difference]: With dead ends: 749 [2024-09-20 18:49:10,319 INFO L226 Difference]: Without dead ends: 558 [2024-09-20 18:49:10,322 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1165 GetRequests, 889 SyntacticMatches, 90 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13132 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=8841, Invalid=26315, Unknown=0, NotChecked=0, Total=35156 [2024-09-20 18:49:10,322 INFO L434 NwaCegarLoop]: 147 mSDtfsCounter, 360 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 1833 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 1466 SdHoareTripleChecker+Invalid, 2059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 1833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-20 18:49:10,322 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 1466 Invalid, 2059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 1833 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-20 18:49:10,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2024-09-20 18:49:10,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 420. [2024-09-20 18:49:10,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 337 states have (on average 1.0118694362017804) internal successors, (341), 338 states have internal predecessors, (341), 48 states have call successors, (48), 35 states have call predecessors, (48), 34 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-20 18:49:10,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 436 transitions. [2024-09-20 18:49:10,375 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 436 transitions. Word has length 467 [2024-09-20 18:49:10,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:49:10,375 INFO L474 AbstractCegarLoop]: Abstraction has 420 states and 436 transitions. [2024-09-20 18:49:10,375 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 142 states, 142 states have (on average 2.6971830985915495) internal successors, (383), 142 states have internal predecessors, (383), 93 states have call successors, (94), 2 states have call predecessors, (94), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2024-09-20 18:49:10,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:10,376 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 436 transitions. [2024-09-20 18:49:10,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2024-09-20 18:49:10,377 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:49:10,377 INFO L216 NwaCegarLoop]: trace histogram [47, 46, 46, 46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:49:10,392 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2024-09-20 18:49:10,578 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2024-09-20 18:49:10,578 INFO L399 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:49:10,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:10,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1282713766, now seen corresponding path program 54 times [2024-09-20 18:49:10,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:49:10,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567002284] [2024-09-20 18:49:10,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:49:10,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:49:10,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:49:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 18:49:12,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 18:49:12,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 18:49:12,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-20 18:49:12,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-20 18:49:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-20 18:49:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 18:49:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-20 18:49:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-20 18:49:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-20 18:49:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-20 18:49:12,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-20 18:49:12,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-20 18:49:12,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-20 18:49:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-20 18:49:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-20 18:49:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-20 18:49:12,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-20 18:49:12,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-20 18:49:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-20 18:49:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-20 18:49:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-20 18:49:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-20 18:49:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-20 18:49:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,690 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-20 18:49:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,691 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-20 18:49:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-20 18:49:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,692 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-20 18:49:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-20 18:49:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,694 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-20 18:49:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-20 18:49:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-20 18:49:12,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,696 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-20 18:49:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2024-09-20 18:49:12,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2024-09-20 18:49:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2024-09-20 18:49:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2024-09-20 18:49:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2024-09-20 18:49:12,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2024-09-20 18:49:12,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2024-09-20 18:49:12,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2024-09-20 18:49:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2024-09-20 18:49:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2024-09-20 18:49:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2024-09-20 18:49:12,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2024-09-20 18:49:12,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:12,708 INFO L134 CoverageAnalysis]: Checked inductivity of 10262 backedges. 2160 proven. 4142 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-20 18:49:12,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:49:12,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567002284] [2024-09-20 18:49:12,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567002284] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:49:12,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757979077] [2024-09-20 18:49:12,708 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-20 18:49:12,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:12,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:49:12,710 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:49:12,710 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-09-20 18:49:12,964 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) [2024-09-20 18:49:12,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:49:12,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 1280 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-09-20 18:49:12,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:49:13,188 INFO L134 CoverageAnalysis]: Checked inductivity of 10262 backedges. 2252 proven. 4050 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-20 18:49:13,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:49:14,640 INFO L134 CoverageAnalysis]: Checked inductivity of 10262 backedges. 2252 proven. 4050 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-20 18:49:14,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757979077] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:49:14,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:49:14,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 55 [2024-09-20 18:49:14,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585373534] [2024-09-20 18:49:14,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:49:14,642 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-09-20 18:49:14,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:49:14,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-09-20 18:49:14,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1239, Invalid=1731, Unknown=0, NotChecked=0, Total=2970 [2024-09-20 18:49:14,642 INFO L87 Difference]: Start difference. First operand 420 states and 436 transitions. Second operand has 55 states, 55 states have (on average 4.8) internal successors, (264), 53 states have internal predecessors, (264), 48 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-20 18:49:14,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:49:14,902 INFO L93 Difference]: Finished difference Result 439 states and 457 transitions. [2024-09-20 18:49:14,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-09-20 18:49:14,902 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 4.8) internal successors, (264), 53 states have internal predecessors, (264), 48 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 469 [2024-09-20 18:49:14,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:49:14,905 INFO L225 Difference]: With dead ends: 439 [2024-09-20 18:49:14,905 INFO L226 Difference]: Without dead ends: 437 [2024-09-20 18:49:14,906 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1126 GetRequests, 979 SyntacticMatches, 93 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2935 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1245, Invalid=1835, Unknown=0, NotChecked=0, Total=3080 [2024-09-20 18:49:14,906 INFO L434 NwaCegarLoop]: 65 mSDtfsCounter, 12 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 18:49:14,906 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 573 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 18:49:14,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2024-09-20 18:49:14,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 432. [2024-09-20 18:49:14,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 346 states have (on average 1.0115606936416186) internal successors, (350), 347 states have internal predecessors, (350), 50 states have call successors, (50), 36 states have call predecessors, (50), 35 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-20 18:49:14,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 449 transitions. [2024-09-20 18:49:14,962 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 449 transitions. Word has length 469 [2024-09-20 18:49:14,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:49:14,962 INFO L474 AbstractCegarLoop]: Abstraction has 432 states and 449 transitions. [2024-09-20 18:49:14,963 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 4.8) internal successors, (264), 53 states have internal predecessors, (264), 48 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-09-20 18:49:14,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:14,963 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 449 transitions. [2024-09-20 18:49:14,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2024-09-20 18:49:14,964 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:49:14,964 INFO L216 NwaCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 47, 47, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:49:14,978 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-09-20 18:49:15,165 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,55 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:15,165 INFO L399 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:49:15,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:15,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1774049160, now seen corresponding path program 55 times [2024-09-20 18:49:15,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:49:15,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279402831] [2024-09-20 18:49:15,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:49:15,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:49:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,464 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:49:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,465 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-20 18:49:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-20 18:49:18,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,467 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-20 18:49:18,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,468 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-20 18:49:18,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,469 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-20 18:49:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,470 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-20 18:49:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,471 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-20 18:49:18,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-20 18:49:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,472 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-20 18:49:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-20 18:49:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,474 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-20 18:49:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,475 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-20 18:49:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-20 18:49:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-20 18:49:18,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-20 18:49:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-20 18:49:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,480 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-20 18:49:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-20 18:49:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-20 18:49:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-20 18:49:18,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,484 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-20 18:49:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-20 18:49:18,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,486 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-20 18:49:18,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-20 18:49:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-20 18:49:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-20 18:49:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-20 18:49:18,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,491 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-20 18:49:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,492 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-20 18:49:18,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,493 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-20 18:49:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,494 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-20 18:49:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,495 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-20 18:49:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-20 18:49:18,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,496 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2024-09-20 18:49:18,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2024-09-20 18:49:18,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2024-09-20 18:49:18,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2024-09-20 18:49:18,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2024-09-20 18:49:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2024-09-20 18:49:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2024-09-20 18:49:18,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2024-09-20 18:49:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2024-09-20 18:49:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2024-09-20 18:49:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2024-09-20 18:49:18,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2024-09-20 18:49:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2024-09-20 18:49:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2024-09-20 18:49:18,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,512 INFO L134 CoverageAnalysis]: Checked inductivity of 10998 backedges. 4374 proven. 2300 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-20 18:49:18,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:49:18,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279402831] [2024-09-20 18:49:18,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279402831] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:49:18,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699033377] [2024-09-20 18:49:18,512 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-20 18:49:18,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:18,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:49:18,514 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:49:18,515 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-09-20 18:49:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:18,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 1314 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-09-20 18:49:18,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:49:21,302 INFO L134 CoverageAnalysis]: Checked inductivity of 10998 backedges. 4692 proven. 2162 refuted. 0 times theorem prover too weak. 4144 trivial. 0 not checked. [2024-09-20 18:49:21,302 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:49:23,376 INFO L134 CoverageAnalysis]: Checked inductivity of 10998 backedges. 4510 proven. 2162 refuted. 0 times theorem prover too weak. 4326 trivial. 0 not checked. [2024-09-20 18:49:23,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699033377] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:49:23,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:49:23,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 96, 96] total 146 [2024-09-20 18:49:23,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070963942] [2024-09-20 18:49:23,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:49:23,378 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 146 states [2024-09-20 18:49:23,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:49:23,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2024-09-20 18:49:23,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4756, Invalid=16414, Unknown=0, NotChecked=0, Total=21170 [2024-09-20 18:49:23,380 INFO L87 Difference]: Start difference. First operand 432 states and 449 transitions. Second operand has 146 states, 146 states have (on average 2.732876712328767) internal successors, (399), 146 states have internal predecessors, (399), 96 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (97), 96 states have call predecessors, (97), 96 states have call successors, (97) [2024-09-20 18:49:26,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:49:26,184 INFO L93 Difference]: Finished difference Result 776 states and 934 transitions. [2024-09-20 18:49:26,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-09-20 18:49:26,184 INFO L78 Accepts]: Start accepts. Automaton has has 146 states, 146 states have (on average 2.732876712328767) internal successors, (399), 146 states have internal predecessors, (399), 96 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (97), 96 states have call predecessors, (97), 96 states have call successors, (97) Word has length 485 [2024-09-20 18:49:26,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:49:26,188 INFO L225 Difference]: With dead ends: 776 [2024-09-20 18:49:26,188 INFO L226 Difference]: Without dead ends: 575 [2024-09-20 18:49:26,191 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1209 GetRequests, 926 SyntacticMatches, 92 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13887 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=9270, Invalid=27786, Unknown=0, NotChecked=0, Total=37056 [2024-09-20 18:49:26,191 INFO L434 NwaCegarLoop]: 150 mSDtfsCounter, 368 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 1623 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 1853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 1623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-20 18:49:26,192 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 1354 Invalid, 1853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 1623 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-20 18:49:26,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2024-09-20 18:49:26,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 434. [2024-09-20 18:49:26,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 348 states have (on average 1.0114942528735633) internal successors, (352), 349 states have internal predecessors, (352), 50 states have call successors, (50), 36 states have call predecessors, (50), 35 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2024-09-20 18:49:26,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 451 transitions. [2024-09-20 18:49:26,248 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 451 transitions. Word has length 485 [2024-09-20 18:49:26,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:49:26,248 INFO L474 AbstractCegarLoop]: Abstraction has 434 states and 451 transitions. [2024-09-20 18:49:26,249 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 146 states, 146 states have (on average 2.732876712328767) internal successors, (399), 146 states have internal predecessors, (399), 96 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (97), 96 states have call predecessors, (97), 96 states have call successors, (97) [2024-09-20 18:49:26,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:26,249 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 451 transitions. [2024-09-20 18:49:26,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2024-09-20 18:49:26,250 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:49:26,250 INFO L216 NwaCegarLoop]: trace histogram [48, 48, 48, 48, 47, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:49:26,265 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2024-09-20 18:49:26,451 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,56 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:26,451 INFO L399 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:49:26,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:26,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1273771827, now seen corresponding path program 56 times [2024-09-20 18:49:26,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:49:26,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710712069] [2024-09-20 18:49:26,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:49:26,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:49:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:49:29,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-20 18:49:29,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-20 18:49:29,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-20 18:49:29,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-20 18:49:29,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-20 18:49:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-20 18:49:29,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-20 18:49:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-20 18:49:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-20 18:49:29,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-20 18:49:29,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-20 18:49:29,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-20 18:49:29,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-20 18:49:29,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-20 18:49:29,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-20 18:49:29,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-20 18:49:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-20 18:49:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-20 18:49:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-20 18:49:29,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-20 18:49:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-20 18:49:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-20 18:49:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-20 18:49:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-20 18:49:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-20 18:49:29,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-20 18:49:29,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-20 18:49:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-20 18:49:29,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-20 18:49:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-20 18:49:29,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-09-20 18:49:29,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-09-20 18:49:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2024-09-20 18:49:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2024-09-20 18:49:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2024-09-20 18:49:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2024-09-20 18:49:29,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2024-09-20 18:49:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2024-09-20 18:49:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2024-09-20 18:49:29,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2024-09-20 18:49:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2024-09-20 18:49:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2024-09-20 18:49:29,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2024-09-20 18:49:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2024-09-20 18:49:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2024-09-20 18:49:29,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,908 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2024-09-20 18:49:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2024-09-20 18:49:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:29,911 INFO L134 CoverageAnalysis]: Checked inductivity of 11092 backedges. 4374 proven. 2394 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-20 18:49:29,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:49:29,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710712069] [2024-09-20 18:49:29,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710712069] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:49:29,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366563092] [2024-09-20 18:49:29,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 18:49:29,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:29,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:49:29,912 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:49:29,913 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-09-20 18:49:30,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 18:49:30,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:49:30,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 1324 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-09-20 18:49:30,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:49:32,349 INFO L134 CoverageAnalysis]: Checked inductivity of 11092 backedges. 2350 proven. 4418 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-20 18:49:32,349 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:49:36,374 INFO L134 CoverageAnalysis]: Checked inductivity of 11092 backedges. 2350 proven. 4418 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-20 18:49:36,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366563092] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:49:36,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:49:36,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 52, 52] total 148 [2024-09-20 18:49:36,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450348821] [2024-09-20 18:49:36,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:49:36,376 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 148 states [2024-09-20 18:49:36,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:49:36,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2024-09-20 18:49:36,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3630, Invalid=18126, Unknown=0, NotChecked=0, Total=21756 [2024-09-20 18:49:36,378 INFO L87 Difference]: Start difference. First operand 434 states and 451 transitions. Second operand has 148 states, 148 states have (on average 3.358108108108108) internal successors, (497), 147 states have internal predecessors, (497), 97 states have call successors, (98), 3 states have call predecessors, (98), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2024-09-20 18:49:40,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 18:49:40,838 INFO L93 Difference]: Finished difference Result 788 states and 950 transitions. [2024-09-20 18:49:40,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2024-09-20 18:49:40,839 INFO L78 Accepts]: Start accepts. Automaton has has 148 states, 148 states have (on average 3.358108108108108) internal successors, (497), 147 states have internal predecessors, (497), 97 states have call successors, (98), 3 states have call predecessors, (98), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) Word has length 487 [2024-09-20 18:49:40,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 18:49:40,842 INFO L225 Difference]: With dead ends: 788 [2024-09-20 18:49:40,842 INFO L226 Difference]: Without dead ends: 589 [2024-09-20 18:49:40,846 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1359 GetRequests, 972 SyntacticMatches, 97 SemanticMatches, 290 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39428 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=14405, Invalid=70567, Unknown=0, NotChecked=0, Total=84972 [2024-09-20 18:49:40,846 INFO L434 NwaCegarLoop]: 151 mSDtfsCounter, 863 mSDsluCounter, 2537 mSDsCounter, 0 mSdLazyCounter, 3187 mSolverCounterSat, 572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 2688 SdHoareTripleChecker+Invalid, 3759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 572 IncrementalHoareTripleChecker+Valid, 3187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-09-20 18:49:40,846 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 2688 Invalid, 3759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [572 Valid, 3187 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-09-20 18:49:40,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2024-09-20 18:49:40,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 444. [2024-09-20 18:49:40,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 356 states have (on average 1.0112359550561798) internal successors, (360), 357 states have internal predecessors, (360), 51 states have call successors, (51), 37 states have call predecessors, (51), 36 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2024-09-20 18:49:40,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 461 transitions. [2024-09-20 18:49:40,913 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 461 transitions. Word has length 487 [2024-09-20 18:49:40,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 18:49:40,913 INFO L474 AbstractCegarLoop]: Abstraction has 444 states and 461 transitions. [2024-09-20 18:49:40,914 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 148 states, 148 states have (on average 3.358108108108108) internal successors, (497), 147 states have internal predecessors, (497), 97 states have call successors, (98), 3 states have call predecessors, (98), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2024-09-20 18:49:40,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:40,914 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 461 transitions. [2024-09-20 18:49:40,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2024-09-20 18:49:40,916 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 18:49:40,916 INFO L216 NwaCegarLoop]: trace histogram [49, 49, 49, 49, 48, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 18:49:40,933 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2024-09-20 18:49:41,117 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-09-20 18:49:41,117 INFO L399 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 18:49:41,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 18:49:41,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1404266691, now seen corresponding path program 57 times [2024-09-20 18:49:41,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 18:49:41,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923803704] [2024-09-20 18:49:41,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 18:49:41,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 18:49:41,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,699 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 18:49:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-20 18:49:44,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,701 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-20 18:49:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-20 18:49:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,703 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-20 18:49:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,704 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-20 18:49:44,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-20 18:49:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-20 18:49:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,706 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-20 18:49:44,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-20 18:49:44,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,708 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-20 18:49:44,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-20 18:49:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-20 18:49:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,710 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-20 18:49:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-20 18:49:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-20 18:49:44,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-20 18:49:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-20 18:49:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-20 18:49:44,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-20 18:49:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-20 18:49:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,717 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-20 18:49:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-20 18:49:44,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-20 18:49:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,719 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-20 18:49:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,720 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-20 18:49:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,721 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-20 18:49:44,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,722 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-20 18:49:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-20 18:49:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,723 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-20 18:49:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-20 18:49:44,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-20 18:49:44,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-20 18:49:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2024-09-20 18:49:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2024-09-20 18:49:44,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2024-09-20 18:49:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2024-09-20 18:49:44,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2024-09-20 18:49:44,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2024-09-20 18:49:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2024-09-20 18:49:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2024-09-20 18:49:44,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2024-09-20 18:49:44,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2024-09-20 18:49:44,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2024-09-20 18:49:44,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2024-09-20 18:49:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2024-09-20 18:49:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2024-09-20 18:49:44,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2024-09-20 18:49:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2024-09-20 18:49:44,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 18:49:44,748 INFO L134 CoverageAnalysis]: Checked inductivity of 11568 backedges. 4563 proven. 2493 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-09-20 18:49:44,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 18:49:44,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923803704] [2024-09-20 18:49:44,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923803704] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 18:49:44,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147568723] [2024-09-20 18:49:44,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 18:49:44,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 18:49:44,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 18:49:44,752 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 18:49:44,753 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-09-20 18:49:45,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 49 check-sat command(s) [2024-09-20 18:49:45,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 18:49:45,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 1351 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-09-20 18:49:45,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 18:49:47,339 INFO L134 CoverageAnalysis]: Checked inductivity of 11568 backedges. 2448 proven. 4608 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-09-20 18:49:47,339 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 18:49:51,548 INFO L134 CoverageAnalysis]: Checked inductivity of 11568 backedges. 2448 proven. 4608 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-09-20 18:49:51,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147568723] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 18:49:51,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 18:49:51,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 53, 53] total 151 [2024-09-20 18:49:51,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995216299] [2024-09-20 18:49:51,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 18:49:51,549 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 151 states [2024-09-20 18:49:51,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 18:49:51,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2024-09-20 18:49:51,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3779, Invalid=18871, Unknown=0, NotChecked=0, Total=22650 [2024-09-20 18:49:51,551 INFO L87 Difference]: Start difference. First operand 444 states and 461 transitions. Second operand has 151 states, 151 states have (on average 3.357615894039735) internal successors, (507), 150 states have internal predecessors, (507), 99 states have call successors, (100), 3 states have call predecessors, (100), 1 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97)